WO2019213792A1 - 一种纯电动汽车的双电机驱动桥箱 - Google Patents

一种纯电动汽车的双电机驱动桥箱 Download PDF

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Publication number
WO2019213792A1
WO2019213792A1 PCT/CN2018/000292 CN2018000292W WO2019213792A1 WO 2019213792 A1 WO2019213792 A1 WO 2019213792A1 CN 2018000292 W CN2018000292 W CN 2018000292W WO 2019213792 A1 WO2019213792 A1 WO 2019213792A1
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Prior art keywords
gear
motor
driven gear
main reduction
shaft
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PCT/CN2018/000292
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English (en)
French (fr)
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李占江
高超
蒋元广
赵志专
薛正成
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南京越博动力系统股份有限公司
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Priority to DE212018000236.3U priority Critical patent/DE212018000236U1/de
Publication of WO2019213792A1 publication Critical patent/WO2019213792A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved

Definitions

  • the invention relates to the technical field of electric vehicle power, and particularly relates to a double motor drive axle box of a pure electric vehicle.
  • the Chinese invention patent application No. 201510391895.0 discloses a dual motor drive axle structure including a axle housing at the bottom of the frame, and two independent drive motors are arranged side by side in the axle housing, and the spindle of each motor A planetary reducer is mounted on the upper part, and the power outputted by the driving motor is transmitted to the transmission shaft through the planetary reducer, and then transmitted to a pair of front driving wheels or rear driving wheels of the electric vehicle via the transmission shaft.
  • the Chinese invention patent application with the application number of 201611009432.4 discloses a two-motor combination electric vehicle drive axle, comprising two wheels and a worm gear pair, and the left axle housing is coaxially mounted between the two wheels.
  • the resolver, the main motor, the planetary gear train, the differential, the right axle housing, the worm gear and the worm gear include a worm wheel and a worm, and the worm is coaxially connected with the speed regulating motor.
  • the above-mentioned prior art has the drawback that there is a power interruption problem during the operation process, which affects the driving feeling of the automobile; the high torque motor is expensive, the cost is high, and the system efficiency is low.
  • the present invention provides a dual motor drive axle box for a pure electric vehicle.
  • the technical solution of the present invention is a dual motor drive axle box of a pure electric vehicle, comprising a first intermediate shaft, a first input shaft, a fourth-speed driven gear, a fourth-speed driving gear, a first synchronizer, and a second-speed driven gear.
  • Second gear drive gear differential, first main reduction drive gear, first motor, left half shaft, right half shaft, second intermediate shaft, second input shaft, third gear driven gear, third gear drive gear, a second synchronizer, a first driven gear, a first drive gear, a second main reduction drive gear, a second motor and a main reduction driven gear, wherein the second gear drive gear and the fourth gear drive gear are fixed on the first input shaft
  • the first motor is connected to the first input shaft and provides power
  • the second gear driven gear and the fourth gear driven gear are sleeved on the first intermediate shaft, and the first synchronizer can move left and right and the second gear driven gear respectively.
  • the fourth gear driven gear is connected, the first main reduction drive gear is fixedly connected with the first intermediate shaft, and the main reduction driven gear is respectively meshed with the first main reduction drive gear and the second main reduction drive gear, and the first motor outputs power Passed through the main reduction driven gear to Accelerator, the left and right axle half shaft are connected by a spline with the differential;
  • the first gear drive gear and the third gear drive gear are fixed on the second input shaft, the second motor is connected to the second input shaft and provides power, and the first gear driven gear and the third gear driven gear are sleeved on the second intermediate shaft.
  • the second synchronizer can be connected to the first driven gear and the third driven gear respectively, the second main reduction drive gear is fixedly connected with the second intermediate shaft, and the second motor output power is transmitted to the difference through the main reduction driven gear. Speeder.
  • left and right half shafts are fixed by bridge support.
  • each of the four forks in which the inner portion of the differential is fixedly mounted with a cross shaft and a cross shaft is provided with a tapered tooth.
  • first motor and the second motor can be any one of an asynchronous motor, a switched reluctance AC servo motor, or a switched magnetic AC servo motor.
  • first main reduction drive gear, the second main reduction drive gear and the main reduction driven gear are all made of cylindrical helical gears.
  • the drive motor, gearbox and drive axle are integrated to save the space of the logistics vehicle chassis, and the drive shaft of the front rear drive is reduced in structure, which saves the cost;
  • the small torque motor is matched with the high-speed ratio transmission system, which not only meets the economic requirements of the whole vehicle, but also meets the demand for small torque and high-speed motor;
  • FIG. 1 is a schematic structural view of a double motor drive axle box according to the present invention.
  • the dual motor drive axle box of the present invention comprises a first intermediate shaft 1, a first input shaft 2, a fourth-speed driven gear 3, a fourth-speed driving gear 4, a first synchronizer 5, and a second gear.
  • the gear 3 is sleeved on the first intermediate shaft 1, and the first synchronizer 5 is movable to the left and right and is respectively connected to the second driven gear 6 and the fourth driven gear 3.
  • the first main reduction drive 9 and the first intermediate shaft 1 fixed connection, the main reduction driven gear 22 meshes with the first main reduction drive gear 9 and the second main reduction drive gear 20, respectively, and couples the first motor 10 and the first Power of the motor 21, the output power of the first motor 10 through the primary reduction driven gear 8 is transmitted to the differential 22, a left axle 11 and right axle 12 is connected with the differential 8 via a spline;
  • the first gear drive gear 19 and the third gear drive gear 16 are fixed on the second input shaft 14, the second motor 21 is connected to the second input shaft 14 and provides power, and the first gear driven gear 18 and the third gear driven gear 15 are idle.
  • the second synchronizer 17 is movable to the left and right and is respectively connected to the first driven gear 18 and the third driven gear 15 , and the second main reduced driving gear 20 is fixedly connected to the second intermediate shaft 13 .
  • the power output from the second motor 21 is transmitted to the differential 8 through the main reduction driven gear 22.
  • left half shaft 11 and the right half shaft 12 are fixed by bridge support.
  • each of the four forks in which the inner portion of the differential 8 is fixedly mounted with a cross shaft and a cross shaft is provided with a tapered tooth.
  • first motor 10 and the second motor 21 can be any one of an asynchronous motor, a switched reluctance AC servo motor, or a switched magnetic AC servo motor.
  • first main reduction drive gear 9, the second main reduction drive gear 20, and the main reduction driven gear 22 are all made of cylindrical helical gears.
  • the operation process of the dual motor drive axle box according to the present invention is as follows:
  • the first motor runs; the second motor generates power, which in turn passes through the second input shaft, the first gear drive gear, the second synchronizer, the first gear driven gear, the second intermediate shaft, the second main reduction drive gear, and the main reduction drive Gears, differentials, and finally transmit power to the left and right axles;
  • Second gear operation process the first motor generates power, which in turn passes through the first input shaft, the second gear drive gear, the first synchronizer, the second gear driven gear, the first intermediate shaft, the first main reduction drive gear, and the main reduction driven Gears, differentials, and finally transmit power to the left and right axles;
  • the second motor generates power, which in turn passes through the second input shaft, the third gear drive gear, the second synchronizer, the third gear driven gear, the second intermediate shaft, the second main reduction drive gear, and the main reduction driven Gears, differentials, and finally transmit power to the left and right axles;
  • the first motor generates power, which in turn passes through the first input shaft, the fourth-speed driving gear, the first synchronizer, the fourth-speed driven gear, the first intermediate shaft, the first main reduction drive gear, and the main reduction driven Gears, differentials, and finally power is transmitted to the left and right axles.

Abstract

一种纯电动汽车的双电机驱动桥箱，其中，主动齿轮（4、7、16、19）固定在输入轴（2、14）上，电机（10、21）与输入轴（2、14）连接并提供动力，从动齿轮（3、6、15、18）空套在中间轴（1、13）上，同步器（5、17）能够左右移动并与从动齿轮（3、6、15、18）连接，主减主动齿轮（9、20）与中间轴（1、13）固定连接，电机（10、21）输出动力通过主减从动齿轮（22）传递到差速器（8），左半轴（11）和右半轴（12）分别通过花键与差速器（8）连接。

Description

一种纯电动汽车的双电机驱动桥箱 技术领域
本发明涉及电动汽车动力技术领域，具体涉及一种纯电动汽车的双电机驱动桥箱。
背景技术
环保与节能是二十一世纪全世界面对的重要问题，中国政府也提出了建设节约型社会的基本国策和鼓励发展小排量节能型汽车的产业发展政策，电动汽车是实现这一目标的重要方法之一。减速器、驱动桥和电动机都是电动汽车的重要组成部分。
例如，申请号为201510391895.0的中国发明专利申请，公开了一种双电机驱动桥结构，其包括位于车架底部的桥壳，桥壳内并列设置有两个独立的驱动电机，每个电机的主轴上都装设有行星减速器，驱动电机输出的动力经行星减速器传递至传动轴，再经传动轴传送至电动车的一对前置驱动轮或后置驱动轮。
又例如，申请号为201611009432.4的中国发明专利申请，公开了一种双电机组合的电动车驱动桥，包括两个车轮和蜗轮蜗杆副，两个车轮之间依次同轴安装有左桥壳、主旋变、主电机、行星轮系、差速器、右桥壳，蜗轮蜗杆副包括蜗轮和蜗杆，蜗杆与调速电机同轴连接。
上述现有技术存在的缺陷是：在运行过程中都存在着动力中断问题，影响对汽车的驾驶感受；大扭矩电机造价贵、成本高，系统效率低。
发明内容
针对现有技术存在的缺陷，本发明提供了一种纯电动汽车的双电机驱动桥箱。
本发明的技术方案是一种纯电动汽车的双电机驱动桥箱，包括第一中间轴、第一输入轴、四挡从动齿轮、四挡主动齿轮、第一同步器、二挡从动齿轮、二挡主动齿轮、差速器、第一主减主动齿轮、第一电机、左半轴、右半轴、第二中间轴、第二输入轴、三挡从动齿轮、三挡主动齿轮、第二同步器、一挡从动齿轮、一挡主动齿轮、第二主减主动齿轮、第二电机和主减从动齿轮，其中，二挡主动齿轮和四挡主动齿轮固定在第一输入轴上，第一电机与第一输入轴连接并提供动力，二挡从动齿轮和四挡从动齿轮空套在第一中间轴上，第一同步器能够左右移动分别并与二挡从动齿轮和四挡从动齿轮连接，第一主减主动齿轮与第一中间轴固定连接，主减从动齿轮分别与第一主减主动齿轮和第二主减主动齿轮啮合连接，第一电机输出动力通过主减从动齿轮传递到差速器，左半轴和右半轴分别通过花键与差速器连接；
一挡主动齿轮和三挡主动齿轮固定在第二输入轴上，第二电机与第二输入轴连接并提供动力，一挡从动齿轮和三挡从动齿轮空套在第二中间轴上，第二同步器能够左右移动分别与一挡从动齿轮和三挡从动齿轮连接，第二主减主动齿轮与第二中间轴固定连接，第二电机输出动力通过主减从动齿轮传递到差速器。
进一步地，左半轴和右半轴采用桥管支撑固定。
进一步地，差速器内部中间位置固定安装有十字轴、十字轴的四个分叉上各装有一个锥齿。
进一步地，第一电机和第二电机能够采用异步电机、开关磁阻式交流伺服电机或开关磁通式交流伺服电机中的任意一种。
进一步地，第一主减主动齿轮、第二主减主动齿轮和主减从动齿轮均采用圆柱斜齿齿轮制成。
本发明所述双电机驱动桥箱的优越的技术效果是：
(1)将驱动电机、变速箱、驱动桥做一体化设计，节省了物流车底盘空间，结构上减少了前置后驱的驱动轴，节省了成本；
(2)能量交汇处在主减从动齿轮，主减从动齿轮同时和两个主减主动齿轮啮合，将两个电机产生的扭矩进行汇集；
(3)小扭矩电机配合高速比传动系，既满足整车动力性需求的基础上经济性最佳，同时又满足对小扭矩高转速电机的需求；
(4)通过电机调速，使同步器转速差减小，在保证性能的同时取消了同步器的同步环结构，简化了结构；
(5)两套完全独立的换挡电机机构，因为本申请中的挡位是组合使用的，所以必须使用两个独立的换挡机构，保证奇数挡和偶数挡能同时啮合。
附图说明
图1为本发明所述双电机驱动桥箱的结构示意图。
图中标记所示：1-第一中间轴，2-第一输入轴，3-四挡从动齿轮，4-四挡主动齿轮，5-第一同步器，6-二挡从动齿轮，7-二挡主动齿轮，8-差速器，9-第一主减主动齿轮，10-第一电机，11-左半轴，12-右半轴，13-第二中间轴，14-第二输入轴，15-三挡从动齿轮，16-三挡主动齿轮，17-第二同步器，18-一挡从动齿轮，19-一挡主动齿轮，20-第二主减主动齿轮，21-第二电机，22-主减从动齿轮。
具体实施方式
下面结合说明书附图对本发明所述双电机驱动桥箱的具体实施方式做进一步详细说明。
如图1所示，本发明所述双电机驱动桥箱包括第一中间轴1、第一输入轴2、四挡从动齿轮3、四挡主动齿轮4、第一同步器5、二挡从动齿轮6、二挡主动齿轮7、差速器8、第一主减主动齿轮9、第一电机10、左半轴11、右半轴12、第二中间轴13、第二输入轴14、三挡从动齿轮15、三挡主动齿轮16、第二同步器17、一挡从动齿轮18、一挡主动齿轮19、第二主减主动齿轮20、第二电机21和主减从动齿轮22，其中，二挡主动齿轮7和四挡主动齿轮4固定在第一输入轴2上，第一电机10与第一输入轴2连接并提供动力，二挡从动齿轮6和四挡从动齿轮3空套在第一中间轴1上，第一同步器5能够左右移动并分别与二挡从动齿轮6和四挡从动齿轮3连接，第一主减主动齿轮9与第一中间轴1固定连接，主减从动齿轮22分别与第一主减主动齿轮9和第二主减主动齿轮20啮合连接，耦合第一电机10和第二电机21的动力，第一电机10输出的动力通过主减从动齿轮22传递到差速器8，左半轴11和右半轴12分别通过花键与差速器8连接；
一挡主动齿轮19和三挡主动齿轮16固定在第二输入轴14上，第二电机21与第二输入轴14连接并提供动力，一挡从动齿轮18和三挡从动齿轮15空套在第二中间轴13上，第二同步器17能够左右移动并分别与一挡从动齿轮18和三挡从动齿轮15连接，第二主减主动齿轮20与第二中间轴13固定连接，第二电机21输出的动力通过主减从动齿轮22传递到差速器8。
进一步地，左半轴11和右半轴12采用桥管支撑固定。
进一步地，差速器8内部中间位置固定安装有十字轴、十字轴的四个分叉上各装有一个锥齿。
进一步地，第一电机10和第二电机21能够采用异步电机、开关磁阻式交流伺服电机或开关磁通式交流伺服电机中的任意一种。
进一步地，第一主减主动齿轮9、第二主减主动齿轮20和主减从动齿轮22均采用圆柱斜齿齿轮制成。
本发明所述的双电机驱动桥箱的运行过程如下：
一挡运行过程；第二电机产生动力，依次通过第二输入轴、一挡主动齿轮、第二同步器、一挡从动齿轮、第二中间轴、第二主减主动齿轮、主减从动齿轮、差速器，最后将动力传送到左半轴和右半轴；
二挡运行过程：第一电机产生动力，依次通过第一输入轴、二挡主动齿轮、第一同步器、 二挡从动齿轮、第一中间轴、第一主减主动齿轮、主减从动齿轮、差速器，最后将动力传送到左半轴和右半轴；
三挡运行过程：第二电机产生动力，依次通过第二输入轴、三挡主动齿轮、第二同步器、三挡从动齿轮、第二中间轴、第二主减主动齿轮、主减从动齿轮、差速器，最后将动力传送到左半轴和右半轴；
四挡运行过程：第一电机产生动力，依次通过第一输入轴、四挡主动齿轮、第一同步器、四挡从动齿轮、第一中间轴、第一主减主动齿轮、主减从动齿轮、差速器，最后将动力传送到左半轴和右半轴。
本发明并不限于上述实施方式，在不背离本发明实质内容的情况下，本领域技术人员可以想到的任何变形、改进、替换均落入本发明的保护范围。

Claims (5)

  1. 一种纯电动汽车的双电机驱动桥箱，包括第一中间轴(1)、第一输入轴(2)、四档从动齿轮(3)、四档主动齿轮(4)、第一同步器(5)、二档从动齿轮(6)、二档主动齿轮(7)、差速器(8)、第一主减主动齿轮(9)、第一电机(10)、左半轴(11)、右半轴(12)、第二中间轴(13)、第二输入轴(14)、三档从动齿轮(15)、三档主动齿轮(16)、第二同步器(17)、一档从动齿轮(18)、一档主动齿轮(19)、第二主减主动齿轮(20)、第二电机(21)和主减从动齿轮(22)，其中，二档主动齿轮(7)和四挡主动齿轮(4)固定在第一输入轴(2)上，第一电机(10)与第一输入轴(2)连接并提供动力，二档从动齿轮(6)和四档从动齿轮(3)空套在第一中间轴(1)上，第一同步器(5)能够左右移动分别并与二档从动齿轮(6)和四档从动齿轮(3)连接，第一主减主动齿轮(9)与第一中间轴(1)固定连接，第一电机(10)输出动力通过主减从动齿轮(22)传递到差速器(8)，主减从动齿轮(22)分别与第一主减主动齿轮(9)和第二主减主动齿轮(20)啮合连接，左半轴(11)和右半轴(12)分别通过花键与差速器(8)连接；
    一档主动齿轮(19)和三挡主动齿轮(16)固定在第二输入轴(14)上，第二电机(21)与第二输入轴(14)连接并提供动力，一档从动齿轮(18)和三档从动齿轮(15)空套在第二中间轴上，第二同步器(17)能够左右移动分别与一档从动齿轮(18)和三档从动齿轮(15)连接，第二主减主动齿轮(20)与第二中间轴(13)固定连接，第二电机(21)输出动力通过主减从动齿轮(22)传递到差速器(8)。
  2. 根据权利要求1所述的双电机驱动桥箱，其特征在于，左半轴(11)和右半轴(12)采用桥管支撑固定。
  3. 根据权利要求1所述的双电机驱动桥箱，其特征在于，差速器(8)内部中间位置固定安装有十字轴、十字轴的四个分叉上各装有一个锥齿。
  4. 根据权利要求1所述的双电机驱动桥箱，其特征在于，第一电机(10)和第二电机(21)能够采用异步电机、开关磁阻式交流伺服电机或开关磁通式交流伺服电机中的任意一种。
  5. 根据权利要求1所述的双电机驱动桥箱，其特征在于，第一主减主动齿轮(9)、第二主减主动齿轮(20)和主减从动齿轮(22)均采用圆柱斜齿齿轮制成。
PCT/CN2018/000292 2018-05-07 2018-08-07 一种纯电动汽车的双电机驱动桥箱 WO2019213792A1 (zh)

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