WO2021082399A1 - 一种下沉式轮边电机驱动桥 - Google Patents

一种下沉式轮边电机驱动桥 Download PDF

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Publication number
WO2021082399A1
WO2021082399A1 PCT/CN2020/090484 CN2020090484W WO2021082399A1 WO 2021082399 A1 WO2021082399 A1 WO 2021082399A1 CN 2020090484 W CN2020090484 W CN 2020090484W WO 2021082399 A1 WO2021082399 A1 WO 2021082399A1
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WIPO (PCT)
Prior art keywords
assembly
wheel
gear
stage reducer
assemblies
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PCT/CN2020/090484
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English (en)
French (fr)
Inventor
余平
陈钟阳
路阳
邵奎柱
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精进电动科技股份有限公司
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Application filed by 精进电动科技股份有限公司 filed Critical 精进电动科技股份有限公司
Priority to US17/597,384 priority Critical patent/US11827104B2/en
Priority to EP20882839.2A priority patent/EP3978283A4/en
Publication of WO2021082399A1 publication Critical patent/WO2021082399A1/zh

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    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • 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
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • B60Y2200/143—Busses
    • B60Y2200/1432—Low floor busses

Definitions

  • the invention relates to the field of new energy vehicles, in particular to a sunken wheel-side motor drive axle.
  • the width of the carriage channel of the current new energy commercial bus using the wheel motor drive axle is determined by the distance between the left and right drive motor end faces of the wheel motor drive axle.
  • the drive motor size is made larger , So that the distance between the end faces of the two drive motors of the wheel motor drive axle is reduced, which in turn leads to a smaller width of the passenger car compartment and lower passenger comfort.
  • the present invention proposes a sunken wheel-side motor drive axle to solve or partially solve the above-mentioned problems.
  • the wheel-side motor drive axle includes an axle beam assembly and two drive motor assemblies respectively arranged at the left and right ends of the axle beam assembly. Component, two reducer assemblies and two wheel hub assemblies;
  • Each of the motor drive assemblies is symmetrically arranged at the bottom of the left and right ends of the axle beam assembly;
  • the drive motor assembly transmits power to the reducer assembly, and the reducer assembly drives the wheel hub assembly to rotate.
  • the drive motor assembly includes an oil-cooled motor with small diameter, high power density and high speed.
  • a brake air chamber is provided on the reducer assembly, and the brake air chamber cooperates with the brake disc, and the width of the carriage passage is restricted by the brake air chamber.
  • the brake disc is arranged on the inner side of the wheel hub assembly.
  • the reducer assembly includes two first-stage reducer assemblies, two two-stage reducer assemblies, and two third-stage reducer assemblies, each of the first-stage reducer assembly, the second The three-stage reducer assembly and the three-stage reducer assembly are arranged symmetrically.
  • the output shaft of the drive motor assembly is connected to the driving gear of the first-stage reducer assembly through a spline, and the driven gear output shaft of the first-stage reducer assembly is connected to the second-stage reducer.
  • the drive gear of the assembly is connected, and the driven gear of the two-stage reducer assembly transmits power to the input end of the three-stage reducer assembly;
  • the two-stage reducer assembly includes a drive gear, an intermediate shaft and A driven gear, and the intermediate shaft meshes with the driving gear and the driven gear respectively.
  • driven gear of the two-stage reducer assembly and the driving gear of the two-stage reducer assembly are eccentrically arranged.
  • the input end and the output end of the three-stage reducer are located on the same side, the three-stage reducer includes a sun gear, a planetary gear, and a ring gear, and the sun gear is driven by the two-stage reducer assembly.
  • the planetary gear meshes with the sun gear and is fixed on the planet carrier, the planet gear meshes with the ring gear, and the ring gear meshes with the gear plate on the hub assembly, thereby Drive the wheel hub assembly to rotate.
  • the drive motor assembly, the first-stage reducer assembly, and the second-stage reducer assembly are lubricated by a spray-condensation integrated cooling and lubricating system.
  • Another aspect of the present invention provides a new energy vehicle, including the sunken wheel-side motor drive axle described in any one of the above.
  • the drive motor assembly is arranged at the bottom of the axle cross beam assembly and a multi-stage reducer is used to ensure the same wheel side drive torque while reducing the torque output demand of the drive motor, thereby effectively reducing the drive motor
  • the size of the drive motor assembly reduces the space ratio of the drive motor assembly, making the boundary of the brake chamber a decisive factor in limiting the width of the carriage channel. Therefore, the wheel-side motor drive axle provided by the present invention can effectively increase the width of the carriage channel and improve the comfort of passengers.
  • Figure 1 shows a top view of a sunken wheel-side motor drive axle in an embodiment of the present invention
  • Figure 2 shows a front view of a sunken wheel-side motor drive axle in an embodiment of the present invention.
  • Embodiment 1 of the present invention discloses a sunken wheel-side motor drive axle.
  • the wheel-side motor drive axle includes an axle beam assembly 8, a drive motor assembly, a reducer assembly, and a wheel hub assembly; a wheel-side motor drive axle See Figure 1 and Figure 2 for the structure.
  • the drive motor assembly includes a left drive motor assembly 7 and a right drive motor assembly 15.
  • the left drive motor assembly 7 and the right drive motor assembly 15 are symmetrically arranged at the bottom of the left and right ends of the axle beam assembly 8, respectively.
  • the drive motor assembly transmits power to the reducer assembly, and the reducer assembly drives the wheel hub assembly to rotate.
  • the reducer includes a left reducer assembly and a right reducer assembly.
  • the wheel hub assembly includes a left wheel hub assembly 2 and a right wheel hub assembly 10.
  • the two left and right reducer assemblies and the two left and right wheel hub assemblies are arranged symmetrically.
  • the left drive motor assembly 7 transmits the power to the left reducer assembly, and the left reducer assembly drives the left hub assembly 2;
  • the right drive motor assembly 15 transmits the power to the right reducer assembly, and then reduces the speed by the right
  • the drive assembly drives the right wheel hub assembly 10.
  • the drive motor is always an oil-cooled motor with a small diameter, high power density and high speed, thereby ensuring a larger torque output and reducing the space ratio of the drive motor assembly.
  • the drive motor assembly can also use other small-volume, high-power motors, not limited to oil-cooled motors.
  • a brake air chamber is provided on the reducer assembly, the brake air chamber includes a left brake air chamber 5 and a right brake air chamber 13, and the left brake air chamber 5 is provided in the left reducer assembly
  • the right brake air chamber 13 is arranged on the right reducer assembly, the brake air chamber is matched with the brake disc, and the width of the carriage channel is restricted by the brake air chamber. It can be seen from Fig. 2 that the boundary A between the left and right brake chambers becomes the decisive factor that limits the width of the car passage.
  • the brake disc is arranged on the inner side of the wheel hub assembly.
  • the brake disc includes a left brake disc 3 and a right brake disc 11.
  • the left and right brake discs are arranged symmetrically, and are respectively arranged on the inner side of the left and right wheel hub assemblies for aligning the left and right wheel hub assemblies. The brakes are applied to the brakes.
  • the reducer assembly includes two primary reducer assemblies on the left and right, two secondary reducer assemblies on the left and right, and two three-stage reducer assemblies on the left and right.
  • Each primary reducer assembly, The two-stage reducer assembly and the three-stage reducer assembly are arranged symmetrically.
  • the present invention realizes three-stage reduction transmission by arranging a one-stage reducer, a two-stage reducer and a three-stage reducer, which can effectively increase the transmission speed ratio, and can reduce the rotation of the driving motor while ensuring the same wheel-side driving torque. Torque output requirements, thereby effectively reducing the size of the drive motor and reducing its space ratio, so as to further increase the width of the carriage channel.
  • the output shaft of the drive motor assembly is connected to the driving gear of the first-stage reducer assembly through splines, and the driven gear output shaft of the first-stage reducer assembly is connected to the driving gear of the second-stage reducer assembly.
  • the driven gear of the two-stage reducer assembly transmits power to the input end of the three-stage reducer assembly, and 70% of the left drive motor assembly transmits power to the left three-stage reduction assembly through the power transmission process.
  • the right drive motor assembly 15 transmits power to the right three-stage reduction assembly 9 through a power transmission process.
  • the motor output shaft of the drive motor assembly is connected to the primary gear of the first-stage reducer through external splines, and the power of the drive motor is transmitted to the first-stage reducer assembly; the output shaft of the driven gear of the first-stage reducer passes through the drive of the second-stage reducer.
  • the gear connection transmits the power to the two-stage reducer assembly; finally, the power is transmitted to the three-stage reducer through the intermediate shaft of the two-stage reducer and the output shaft of the driven gear eccentrically arranged with the driving gear.
  • the two-stage reducer assembly includes a driving gear, an intermediate shaft and a driven gear.
  • the intermediate shaft meshes with the driving gear and the driven gear respectively.
  • the driving gear transmits power to the driven gear through the intermediate shaft, which can effectively increase the transmission speed ratio.
  • the driven gear of the two-stage reducer assembly and the driving gear of the two-stage reducer assembly are eccentrically arranged, and the output shaft of the driven gear of the first-stage reducer assembly drives the driving gear of the two-stage reducer assembly When rotating, the driven gear of the two-stage reducer assembly also rotates.
  • the input end and the output end of the three-stage reducer are located on the same side.
  • the three-stage reducer includes a sun gear, a planetary gear, and a ring gear.
  • the sun gear is driven by the driven gear of the two-stage reducer assembly.
  • the wheel meshes with the sun gear and is fixed on the planet carrier, the planet gear meshes with the ring gear, and the ring gear meshes with the gear plate on the hub assembly to drive the hub assembly to rotate.
  • the drive motor assembly, the primary reducer assembly, and the secondary reducer assembly are lubricated by the spray-condensation integrated cooling and lubrication system, thereby enhancing the cooling and lubricating effect and improving the cooling and lubricating efficiency.
  • the present invention discloses a sunken wheel-side motor drive axle.
  • the wheel-side motor drive axle includes an axle beam assembly, a drive motor assembly, a reducer assembly and a wheel hub assembly; the drive motor The assembly includes a left drive motor assembly and a right drive motor assembly.
  • the left drive motor assembly and the right drive motor assembly are symmetrically arranged at the bottom of the left and right ends of the axle beam assembly; the drive motor assembly transmits the power to the reducer Assembly, reducer assembly drives the wheel hub assembly to rotate.
  • the wheel-side electric drive axle of the present invention increases the transmission speed ratio through three-stage reduction transmission, while ensuring the same wheel-end drive torque, while reducing the demand for the output torque of the drive motor, thereby effectively reducing the drive motor Size, the drive motor is arranged at the bottom of the axle beam assembly, which reduces the space ratio, increases the width of the new energy commercial passenger car compartment, and improves the comfort of passengers.
  • the embodiment of the present invention also discloses a new energy vehicle, including the sunken wheel-side motor drive axle described in any one of the above.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种下沉式轮边电机驱动桥，包括车桥横梁总成（8），还包括分别设置在所述车桥横梁总成（8）左右两端的两个驱动电机总成（7、15）、两个减速器总成和两个轮毂总成（2、10）；各所述电机驱动总成分别对称设置在所述车桥横梁总成（8）左右两端的底部；且所述驱动电机总成（7、15）将动力传递给所述减速器总成，所述减速器总成驱动所述轮毂总成（2、10）旋转，轮边电机驱动桥将驱动电机设置在车桥横梁总成（8）底部，减小了空间占比，增大新能源客车车厢通道的宽度，提高了乘客舒适性；并且通过三级减速传动，增大传动速比，在保证同等轮端驱动转矩的同时，减小了对驱动电机输出转矩的需求，还可以有效缩减驱动电机尺寸。

Description

一种下沉式轮边电机驱动桥 技术领域
本发明涉及新能源汽车领域，具体涉及一种下沉式轮边电机驱动桥。
发明背景
随着石油资源的日渐枯萎和空气污染的逐渐加剧，社会对新能源汽车的呼声越来越强烈，其中包括纯电动、混合动力、燃料电池等形式汽车，新能源汽车的出现大大减少了对石油的依赖和大气的污染。新能源汽车相对于传统内燃机汽车而言，由于能量供给形式不同，因此，不论是整车布置结构，还是驱动系统总成，都发生了巨大变化，其中的驱动系统总成对整车而言至关重要，不仅承担承载功能、驱动功能，而且直接决定了整车的安全和舒适性能。
当前采用轮边电机驱动桥的新能源商用客车的车厢通道宽度是由轮边电机驱动桥左右驱动电机端面之间的距离决定的，然而为保证较大驱动转矩，驱动电机尺寸做得较大，使轮边电机驱动桥两驱动电机端面之间的距离变小，进而导致客车车厢通道的宽度较小，乘客的舒适性低。
发明内容
鉴于上述问题，本发明提出了一种下沉式轮边电机驱动桥，以便解决或者部分解决上述问题。
为达到上述目的，本发明的技术方案是这样实现的：
本发明一方面提供一种下沉式轮边电机驱动桥，所述轮边电机驱动桥包括车桥横梁总成，还包括分别设置在所述车桥横梁总成左右两端的两个驱动电机总成、两个减速器总成和两个轮毂总成；
各所述电机驱动总成分别对称设置在所述车桥横梁总成左右两端的底部；
且所述驱动电机总成将动力传递给所述减速器总成，所述减速器总成驱动所述轮毂总成旋转。
进一步的，所述驱动电机总成包括小直径、高功率密度和高转速的油冷电机。
进一步的，所述减速器总成上设置有制动气室，所述制动气室与刹车盘配合，且由所述制动气室限制出车厢通道的宽度。
进一步的，所述刹车盘设置在轮毂总成的内侧。
进一步的，所述减速器总成包括两个一级减速器总成、两个二级减速器总成和两个三级减速器总成，各所述一级减速器总成、所述二级减速器总成和所述三级减速器总成左右对称设置。
进一步的，所述驱动电机总成的输出轴通过花键与所述一级减速器总成的主动齿轮连接，所述一级减速器总成的从动齿轮输出轴与所述二级减速器总成的主动齿轮连接，所述二级减速器总成的从动齿轮将动力传递至所述三级减速器总成的输入端；所述二级减速器总成包括主动齿轮、中间轴和从动齿轮，所述中间轴分别与所述主动齿轮和所述从动齿轮啮合。
进一步的，所述二级减速器总成的从动齿轮与所述二级减速器总成的主动齿轮偏心设置。
进一步的，所述三级减速器的输入端与输出端位于同一侧，所述三级减速器包括太阳轮、行星轮、齿圈，所述太阳轮由所述二级减速器总成的从动齿轮驱动，所述行星轮与所述太阳轮啮合，且固定在行星架上，所述行星轮与所述齿圈啮合，所述齿圈与所述轮毂总成上的齿盘啮合，从而驱动所述轮毂总成旋转。
进一步的，所述驱动电机总成、所述一级减速器总成和所述二级减速器总成采用喷凝式一体化冷却润滑系统润滑。
本发明另一方面提供一种新能源汽车，包括上述任一项所述的下沉式轮边电机驱动桥。
采用上述下沉式轮边电机驱动桥具有以下优点：
本发明通过把驱动电机总成设置在车桥横梁总成底部，并使用多级减速器，在保证同等轮边驱动转矩的同时，减小了驱动电机转矩输出需求，进而有效缩减驱动电机的尺寸，减小了驱动电机总成的空间占比，使制动气室边界成为限制车厢通道宽度的决定因素。因此，本发明提供的轮边电机驱动桥可以有效增大车厢通道的宽度，提高乘客的舒适性。
附图简要说明
图1示出了本发明一个实施例中下沉式轮边电机驱动桥的俯视图；
图2示出了本发明一个实施例中下沉式轮边电机驱动桥的主视图。
图中附图标记如下：1、左三级减速器总成，2、左轮毂总成，3、左刹车盘，4、左二级减速器总成，5、左制动气室，6、左一级减速器总成，7、左驱动电机总成， 8、车桥横梁总成，9、右三级减速器总成，10、右轮毂总成，11、右刹车盘，12、右二级减速器总成，13、右制动气室，14、右一级减速器总成，15、右驱动电机总成，A、左右两对称设置的制动气室之间的边界。
实施本发明的方式
下面将参照附图更详细地描述本发明的示例性实施例。虽然附图中显示了本发明的示例性实施例，然而应当理解，可以以各种形式实现本发明而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。
实施例1
本发明实施例1公开一种下沉式轮边电机驱动桥，该轮边电机驱动桥包括车桥横梁总成8、驱动电机总成、减速器总成和轮毂总成；轮边电机驱动桥的结构参见图1和图2。
驱动电机总成包括左驱动电机总成7和右驱动电机总成15，左驱动电机总成7和右驱动电机总成15分别对称设置在车桥横梁总成8左右两端的底部。通过把驱动电机总成设置在车桥横梁总成8的底部，使左右两对称设置的制动气室之间的边界A成为限制车厢通道宽度的决定因素，从而增大车厢的通道宽度。
并且，驱动电机总成将动力传递给减速器总成，减速器总成驱动轮毂总成旋转。减速器包括左减速器总成和右减速器总成，轮毂总成包括左轮毂总成2和右轮毂总成10，左右两个减速器总成和左右两个轮毂总成左右对称设置。左驱动电机总成7把动力传递给左减速器总成，再由左减速器总成驱动左轮毂总成2；右驱动电机总成15把动力传递给右减速器总成，再由右减速器总成驱动右轮毂总成10。
在一个优选实施例中，驱动电机总成为小直径、高功率密度和高转速的油冷电机，进而保证较大的转矩输出，同时也减小了驱动电机总成的空间占比。当然，根据具体需求，驱动电机总成也可以使用其他小体积、大功率的电机，并不仅限于使用油冷电机。
在一个实施例中，减速器总成上设置有制动气室，制动气室包括左制动气室5和右制动气室13，左制动气室5设置在左减速器总成上，右制动气室13设置在右减速器总成上，制动气室与刹车盘配合，且由制动气室限制出车厢通道的宽度。从图2可以看出，左右两个制动气室之间的边界A成为限制车厢通道宽度的决定因 素。
在一个实施例中，刹车盘设置在轮毂总成的内侧，刹车盘包括左刹车盘3和右刹车盘11，左右刹车盘对称设置，分别设置在左右轮毂总成内侧，用于对左右轮毂总成进行刹车制动。
在一个优选实施例中，减速器总成包括左右两个一级减速器总成、左右两个二级减速器总成和左右两个三级减速器总成，各一级减速器总成、二级减速器总成和三级减速器总成左右对称设置。本发明通过设置一级减速器、二级减速器和三级减速器，实现三级减速传动，可以有效增大传动速比，在保证同等轮边驱动转矩的同时，可以减小驱动电机转矩输出要求，进而有效缩减驱动电机的尺寸，减小其空间占比，以此来进一步增大车厢通道的宽度。
在一个实施例中，驱动电机总成的输出轴通过花键与一级减速器总成的主动齿轮连接，一级减速器总成的从动齿轮输出轴与二级减速器总成的主动齿轮连接，二级减速器总成的从动齿轮将动力传递至三级减速器总成的输入端，左驱动电机总7成通过动力传导过程，把动力传给了左三级减速总成1，右驱动电机总成15通过动力传导过程，把动力传给了右三级减速总成9。驱动电机总成的电机输出轴通过外花键与一级减速器主动齿轮连接，将驱动电机动力传递至一级减速器总成；一级减速器从动齿轮输出轴通过与二级减速器主动齿轮连接，将动力传递至二级减速器总成；最后通过二级减速器中间轴和与主动齿轮偏心设置的从动齿轮输出轴，再将动力传递至三级减速器。
二级减速器总成包括主动齿轮、中间轴和从动齿轮，中间轴分别与主动齿轮和从动齿轮啮合，主动齿轮通过中间轴把动力传递给从动齿轮，可以有效增大传动速比。
在一个实施例中，二级减速器总成的从动齿轮与二级减速器总成的主动齿轮偏心设置，一级减速器总成的从动齿轮输出轴带动二级减速器总成主动齿轮转动时，二级减速器总成的从动齿轮也就跟着转动。
在一个实施例中，三级减速器的输入端与输出端位于同一侧，三级减速器包括太阳轮、行星轮、齿圈，太阳轮由二级减速器总成的从动齿轮驱动，行星轮与太阳轮啮合，且固定在行星架上，行星轮与齿圈啮合，齿圈与轮毂总成上的齿盘啮合，从而驱动轮毂总成旋转，上述的驱动结构分别有两套，并且左右对称设置。
在一个实施例中，驱动电机总成、一级减速器总成和二级减速器总成采用喷凝 式一体化冷却润滑系统润滑，进而增强冷却润滑效果和提高冷却润滑效率，同样，也可以选用其他与喷凝式一体化冷却润滑系统效果相同的润滑系统进行润滑。
综上所述，本发明公开了的一种下沉式轮边电机驱动桥，该轮边电机驱动桥包括车桥横梁总成、驱动电机总成、减速器总成和轮毂总成；驱动电机总成包括左驱动电机总成和右驱动电机总成，左驱动电机总成和右驱动电机总成分别对称设置在车桥横梁总成左右两端的底部；驱动电机总成将动力传递给减速器总成，减速器总成驱动轮毂总成旋转。本发明中的轮边电驱动桥通过三级减速传动，增大传动速比，在保证同等轮端驱动转矩的同时，减小了对驱动电机输出转矩的需求，进而可以有效缩减驱动电机尺寸，把驱动电机设置在车桥横梁总成底部，减小了空间占比，增大新能源商用客车车厢通道的宽度，提高了乘客舒适性。
实施例2
本发明的实施例还公开了一种新能源汽车，包括上述任一项所述的下沉式轮边电机驱动桥。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化、替换或改进，都应涵盖在本发明的保护范围之内。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。

Claims (10)

  1. 一种下沉式轮边电机驱动桥，其特征在于，所述轮边电机驱动桥包括车桥横梁总成，还包括分别设置在所述车桥横梁总成左右两端的两个驱动电机总成、两个减速器总成和两个轮毂总成；
    各所述电机驱动总成分别对称设置在所述车桥横梁总成左右两端的底部；
    且所述驱动电机总成将动力传递给所述减速器总成，所述减速器总成驱动所述轮毂总成旋转。
  2. 根据权利要求1所述的轮边电机驱动桥，其特征在于，所述驱动电机总成包括小直径、高功率密度和高转速的油冷电机。
  3. 根据权利要求1所述的电机驱动桥，其特征在于，所述减速器总成上设置有制动气室，所述制动气室与刹车盘配合，且由所述制动气室限制出车厢通道的宽度。
  4. 根据权利要求3所述的电机驱动桥，其特征在于，所述刹车盘设置在所述轮毂总成的内侧。
  5. 根据权利要求1所述的轮边电机驱动桥，其特征在于，所述减速器总成包括两个一级减速器总成、两个二级减速器总成和两个三级减速器总成，各所述一级减速器总成、所述二级减速器总成和所述三级减速器总成左右对称设置。
  6. 根据权利要求5所述的轮边电机驱动桥，其特征在于，所述驱动电机总成的输出轴通过花键与所述一级减速器总成的主动齿轮连接，所述一级减速器总成的从动齿轮输出轴与所述二级减速器总成的主动齿轮连接，所述二级减速器总成的从动齿轮将动力传递至所述三级减速器总成的输入端；
    所述二级减速器总成包括主动齿轮、中间轴和从动齿轮，所述中间轴分别与所述主动齿轮和所述从动齿轮啮合。
  7. 根据权利要求6所述的轮边电机驱动桥，其特征在于，所述二级减速器总成的从动齿轮与所述二级减速器总成的主动齿轮偏心设置。
  8. 根据权利要求6所述的轮边电机驱动桥，其特征在于，所述三级减速器的输入端与输出端位于同一侧，所述三级减速器包括太阳轮、行星轮、齿圈，所述太阳轮由所述二级减速器总成的从动齿轮驱动，所述行星轮与所述太阳轮啮合，且固定在行星架上，所述行星轮与所述齿圈啮合，所述齿圈与所述轮毂总成上的齿盘啮 合，从而驱动所述轮毂总成旋转。
  9. 根据权利要求6所述的轮边电机驱动桥，其特征在于，所述驱动电机总成、所述一级减速器总成和所述二级减速器总成采用喷凝式一体化冷却润滑系统润滑。
  10. 一种新能源汽车，包括权利要求1-9任一项所述下沉式轮边电机驱动桥。
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