WO2020238956A1 - 一种可实现四轮驱动的传动系统及其工作模式 - Google Patents

一种可实现四轮驱动的传动系统及其工作模式 Download PDF

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Publication number
WO2020238956A1
WO2020238956A1 PCT/CN2020/092604 CN2020092604W WO2020238956A1 WO 2020238956 A1 WO2020238956 A1 WO 2020238956A1 CN 2020092604 W CN2020092604 W CN 2020092604W WO 2020238956 A1 WO2020238956 A1 WO 2020238956A1
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WIPO (PCT)
Prior art keywords
shaft
numbered
gear
odd
output
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PCT/CN2020/092604
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English (en)
French (fr)
Inventor
胡明辉
周安健
王东洋
苏岭
傅春耘
曹开斌
秦大同
邓承浩
孙冬野
金国庆
胡建军
石万凯
杜长虹
Original Assignee
重庆大学
重庆长安新能源汽车科技有限公司
重庆长安汽车股份有限公司
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Application filed by 重庆大学, 重庆长安新能源汽车科技有限公司, 重庆长安汽车股份有限公司 filed Critical 重庆大学
Publication of WO2020238956A1 publication Critical patent/WO2020238956A1/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
    • 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
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • 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
    • B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
    • 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
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles

Definitions

  • the invention relates to the field of vehicle transmission, in particular to a transmission system capable of realizing four-wheel drive and its working mode.
  • Automatic transmission is a kind of transmission device that can automatically shift gears according to the speed of the car and the engine speed.
  • the automatic transmission can be divided into AT (hydraulic automatic transmission) and AMT (electrically controlled mechanical automatic transmission).
  • AT hydraulic automatic transmission
  • AMT electrically controlled mechanical automatic transmission
  • CVT Continuous Variable Automatic Transmission
  • DCT Dual Clutch Automatic Transmission
  • DCT Device Control Mechanical Automatic Transmission
  • AMT Electrical Control Mechanical Automatic Transmission
  • the power transmission of DCT in the process of shifting is completed by the combination and separation of the two clutches.
  • the clutch realizes torque transmission by the friction between the driving disc and the driven disc. Due to friction in the power transmission process, there is energy loss. And friction generates a lot of heat, which is prone to ablation of the clutch, which affects the power transmission performance of the clutch.
  • the motor has the characteristics of constant torque at low speed and constant power at high speed, and fast response speed. According to these characteristics of the drive motor, using it in the vehicle drive system can reduce the gear setting of the gearbox and reduce the weight of the power transmission system.
  • the disadvantage of using a single motor drive is: when the required power and torque are high, a larger-volume motor is required. In the high-speed stage, the motor torque appears non-linearly reduced, which cannot meet the requirements of the vehicle at high speed under certain working conditions. When a larger torque is required.
  • the purpose of the present invention is to provide a four-wheel drive transmission system and its working mode.
  • the rapid response control of the dual motors is used instead of the clutch control, so that no power interruption can be realized, and the four-wheel drive can be realized.
  • the function of the drive is to provide a four-wheel drive transmission system and its working mode.
  • the present invention provides the following solutions:
  • a transmission system capable of realizing four-wheel drive including odd-numbered axis motors, even-numbered axis motors, front wheel drive shafts, rear wheel drive shafts, and front wheel output shaft gears arranged on the front wheel drive shafts, and arranged on the rear wheel drive
  • the rear-wheel output shaft gear on the shaft, the front-wheel output shaft gear and the rear-wheel output shaft gear are connected by the front and rear drive shaft coupling sleeves;
  • the output shaft of the odd-numbered shaft motor is respectively provided with odd-numbered shafts in the direction away from the odd-numbered shaft motor First-speed driving gear and odd-numbered shaft second-speed driving gear; odd-numbered shaft first-speed driving gear meshed with odd-numbered shaft first-speed driven gear, odd-numbered shaft second-speed driving gear meshed with odd-numbered shaft second-speed driven gear, odd-numbered shaft first speed
  • the driven gear is connected with the odd-numbered shaft second-speed driven gear through a first coupling sleeve; it also includes an odd-numbered shaft first-speed driven gear, an odd-numbered
  • the odd-number shaft first output gear and The odd-numbered shaft second output gear is connected by a second coupling sleeve;
  • the output shaft of the even-numbered shaft motor is respectively provided with an even-numbered shaft first-speed driving gear and an even-numbered shaft second-speed driving gear along the direction away from the even-numbered shaft motor;
  • the gear meshes with the even-numbered shaft first-speed driven gear, the even-numbered shaft second-speed driving gear meshes with the even-numbered shaft second-speed driven gear, the even-numbered shaft first-speed driven gear and the even-numbered shaft second-speed driven gear are connected by a third coupling sleeve It also includes an even-numbered shaft intermediate shaft that runs through the even-numbered shaft first gear driven gear, the even-numbered shaft second gear driven gear, and the third combination sleeve; the even-numbered shaft intermediate shaft is also provided with a rear wheel output shaft gear meshing The even-numbered shaft first output gear and the even-numbered shaft second output gear meshed with the front wheel output shaft gear, the even-numbered shaft
  • it further includes a speed sensor, which is connected to the odd-numbered axis first-speed driving gear and is used to monitor the speed of the odd-numbered axis first-speed driving gear.
  • a rear axle differential is also connected to the rear wheel drive shaft; and a front axle differential is also connected to the front wheel drive shaft.
  • the present invention also provides a working mode of a transmission system that can realize four-wheel drive, including a single-motor mode and a dual-motor mode; the single-motor mode includes a single-motor two-drive mode and a single-motor four-drive mode; the dual-motor Modes include dual-motor two-drive mode and dual-motor four-drive mode.
  • the single-motor two-drive mode uses odd-numbered axis motors or even-numbered axis motors as the power source; when the single-motor two-wheel drive mode uses odd-numbered axis motors as the power source, the power is driven by the odd-numbered axis first gear driving gear and the odd-numbered axis first gear.
  • the gear or odd-numbered shaft second-speed driving gear and odd-numbered shaft second-speed driven gear are transmitted to the odd-numbered shaft first output gear and the rear wheel output shaft gear.
  • the second combination sleeve is combined with the odd-numbered shaft first output gear, and the front and rear drive shafts are combined
  • the vehicle works in single-motor drive and rear-wheel drive mode
  • the second combination sleeve is combined with the second output gear of the odd-numbered shaft
  • the vehicle works in single-motor drive and vehicle front-wheel drive mode
  • the single-motor two-wheel drive mode uses even-numbered shafts
  • the motor is used as the power source, the power is transmitted to the first output gear of the even-numbered shaft and the output shaft of the rear wheel through the even-numbered shaft first-speed driving gear, the even-numbered shaft first-speed driven gear or the even-numbered shaft second-speed driving gear, and the even-numbered shaft second-speed driven gear.
  • the fourth coupling sleeve is combined with the first output gear of the even-numbered shaft, and the front and rear drive shaft coupling sleeves are disconnected, and the vehicle works in single-motor drive, vehicle rear-drive mode; when the fourth coupling sleeve is combined with the second output gear of the even-numbered shaft When the vehicle works in single-motor drive, vehicle front-wheel drive mode.
  • the single-motor four-wheel drive mode uses odd-numbered axis motors or even-numbered axis motors as the power source; when the single-motor four-wheel drive mode uses odd-numbered axis motors as the power source, the power is driven by the odd-numbered axis first gear drive gear, and the odd-numbered axis first gear.
  • the gear or the odd-numbered shaft second-speed driving gear and the odd-numbered shaft second-speed driven gear are transmitted to the odd-numbered shaft first output gear and the rear wheel output shaft gear.
  • the second combination sleeve and the odd-numbered shaft first output gear or the odd-numbered shaft second output Gear combination, front and rear drive shaft combination sleeve combination when the single-motor four-wheel drive mode uses an even-numbered shaft motor as the power source, the power passes through the even-numbered shaft first-speed driving gear, even-numbered shaft first-speed driven gear or even-numbered shaft second-speed driving gear, even-numbered shaft The second-speed driven gear is transmitted to the even-numbered shaft first output gear and the rear wheel output shaft gear.
  • the fourth coupling sleeve is combined with the even-numbered shaft first output gear or the even-numbered shaft second output gear, and the front and rear drive shaft coupling sleeves are combined.
  • the power output by the odd-numbered shaft motor is transmitted to the odd-numbered shaft first output gear and the rear wheel output shaft gear through the odd-numbered shaft first-speed driving gear and the odd-numbered shaft first driven gear, and then passes through The rear wheel drive shaft is transmitted to the wheels; the power generated by the even-numbered shaft motor is transmitted to the even-numbered shaft first output gear and the rear wheel output shaft gear through the even-numbered shaft first driving gear and the even-numbered shaft first driven gear, and then transmitted through the rear wheels
  • the torque generated by the odd-numbered shaft motor and the even-numbered shaft motor is coupled and output through the odd-numbered shaft first output gear, the even-numbered shaft first output gear and the rear wheel output shaft gear; or the power output by the odd-numbered shaft motor is
  • the odd-numbered shaft second driving gear and the odd-numbered shaft second-speed driven gear are transmitted to the odd-numbered shaft second output gear and the rear wheel output shaft gear, and then through the rear wheel drive shaft and transmitted to the wheels; the power generated by the even-numbered shaft motor is transmitted through
  • the dual-motor four-wheel drive mode is divided into two situations, namely the four-wheel drive mode after power coupling and the four-wheel drive mode when the two motors drive the front and rear axles respectively.
  • the front and rear drive shaft coupling sleeves are combined. After the power is coupled, it is transmitted to the four wheels through the front wheel drive shaft and the rear wheel drive shaft .
  • the odd-numbered axis motor as the power source generates power through the odd-numbered axis first-speed driving gear and odd-numbered axis first-speed driven gear or odd-numbered axis second-speed driving gear and odd-numbered axis second gear.
  • the gear driven gear is transmitted to the intermediate shaft of the odd-numbered shaft.
  • the second coupling sleeve is combined with the first output gear of the odd-numbered shaft.
  • the first output gear of the odd-numbered shaft and the rear wheel output shaft gear transmit power to the rear wheel drive shaft and to Two rear wheels; the power generated by the even-numbered shaft motor as the power source is transmitted to the even number via the even-numbered shaft first-speed driving gear and the even-numbered shaft first-speed driven gear or the even-numbered shaft second-speed driving gear and the even-numbered shaft second-speed driven gear through the gear pair Shaft intermediate shaft, at this time the fourth coupling sleeve is combined with the second output gear of the even-numbered shaft, the second output gear of the even-numbered shaft and the front wheel output shaft gear transmit power to the front wheel drive shaft and to the two front wheels, realizing four Drive function; or the power generated by the odd-numbered shaft motor as the power source is transmitted to the odd-numbered shaft intermediate shaft through the odd-numbered shaft first-speed driving gear and odd-numbered shaft first-speed driven gear or odd-numbered shaft second-speed driving gear and odd-numbered shaft second-speed driven gear , At this time, the second coupling sleeve is combined with the odd
  • the present invention Compared with the prior art, the present invention has the following technical effects: the present invention utilizes the coordinated control of the dual motors to enable the motors to work in the high-efficiency area to the utmost extent and improves the efficiency of the transmission system; the coordinated control of the dual motors is used to achieve four Wheel drive mode and two-wheel drive mode.
  • the present invention uses the sensor information to synchronously control the speed during the shift process, which can reduce the impact during the shift process.
  • Fig. 1 is a schematic structural diagram of a transmission system capable of realizing four-wheel drive according to an embodiment of the present invention
  • Fig. 2 is a diagram of the power flow of the rear wheel driven by the odd-numbered axis motor as the power source in the single-motor two-drive mode according to the embodiment of the present invention
  • FIG. 3 is a diagram of the power flow of driving the front wheels with odd-numbered shaft motors as the power source in the single-motor two-drive mode according to the embodiment of the present invention
  • FIG. 4 is a diagram of the power flow of driving the front wheels in the dual-motor two-drive mode according to the embodiment of the present invention.
  • FIG. 5 is a diagram of the power flow of driving the rear wheels in the dual-motor two-drive mode according to the embodiment of the present invention.
  • FIG. 6 is a diagram of the power flow in the four-wheel drive mode after power coupling in the dual-motor four-wheel drive mode according to the embodiment of the present invention
  • Fig. 7 is a power flow diagram of the four-wheel drive mode with two motors driving the front and rear axles in the dual-motor four-wheel drive mode according to the embodiment of the present invention.
  • Fig. 1 is a schematic structural diagram of a transmission system capable of realizing four-wheel drive according to an embodiment of the present invention.
  • a transmission system that can realize four-wheel drive includes an odd-numbered shaft motor 1, an even-numbered shaft motor 24, a front wheel transmission shaft 27, a rear wheel transmission shaft 25, and a front wheel transmission shaft 27.
  • the front-wheel output shaft gear 12, the rear-wheel output shaft gear 14 arranged on the rear-wheel drive shaft 25, the front-wheel output shaft gear 12 and the rear-wheel output shaft gear 14 are connected by a front and rear drive shaft coupling sleeve 13;
  • the odd number The output shaft of the shaft motor 1 is respectively provided with an odd-numbered shaft first-speed driving gear 2 and an odd-numbered shaft second-speed driving gear 4 along the direction away from the odd-numbered shaft motor 1;
  • the odd-numbered shaft first-speed driving gear 2 is opposite to the odd-numbered first-speed driven gear 5 Meshing, odd-numbered shaft second-speed driving gear 4 meshes with odd-numbered shaft second-speed driven gear 7, odd-numbered shaft first-speed driven gear 5 and odd-numbered shaft second-speed driven gear 7 are connected by a first coupling sleeve 6;
  • the odd-numbered shaft intermediate shaft 10 is also provided with a rear wheel output shaft gear 14
  • the output shaft of the even-numbered shaft motor 24 is provided with an even-numbered shaft first-speed driving gear 21 and an even-numbered shaft second-speed driving gear 19 along the direction away from the even-numbered shaft motor 24;
  • the even-numbered shaft first-speed driving gear 21 and the even-numbered shaft one Gear driven gear 22 meshes, even-numbered shaft second-speed driving gear 19 meshes with even-numbered shaft second-speed driven gear 18, even-numbered shaft first-speed driven gear 22 and even-numbered shaft second-speed driven gear 18 pass through the third coupling sleeve 20
  • the present invention also provides a working mode applied to the aforementioned four-wheel drive transmission system, including single-motor mode and dual-motor mode; the single-motor mode includes single-motor two-drive mode and single-motor four-wheel drive mode; The dual motor mode includes dual motor two drive mode and dual motor four drive mode.
  • the single-motor two-drive mode uses odd-numbered axis motors 1 or even-numbered axis motors 24 as a power source.
  • the power is transmitted through the odd-numbered axis first-speed driving gear 2, the odd-numbered axis first-speed driven gear 5 or the odd-numbered axis second-speed driving gear 4 ,
  • the odd-numbered shaft second-speed driven gear 7 is transmitted to the odd-numbered shaft first output gear 8 and the rear wheel output shaft gear 14.
  • the second coupling sleeve 9 is combined with the odd-numbered shaft first output gear 8, and the front and rear drive shaft coupling sleeves 13 are broken.
  • the vehicle works in single-motor drive, vehicle rear-drive mode; when the second coupling sleeve 9 is combined with the odd-numbered second output gear 11, the vehicle works in single-motor drive, vehicle front-wheel drive mode;
  • the single-motor two-drive mode uses the even-numbered shaft motor 24 as the power source
  • the power passes through the even-numbered shaft first-speed driving gear 21, the even-numbered shaft first-speed driven gear 22 or the even-numbered shaft second-speed driving gear 19, and the even-numbered shaft second-speed driven gear 18 It is transmitted to the even-numbered shaft first output gear 17 and the rear wheel output shaft gear 14.
  • the fourth coupling sleeve 16 is combined with the even-numbered first output gear 17, and the front and rear drive shaft coupling sleeves 13 are disconnected, and the vehicle is driven by a single motor.
  • Vehicle rear-wheel drive mode when the fourth coupling sleeve 16 is combined with the even-numbered shaft second output gear 15, the vehicle works in a single-motor drive and vehicle front-wheel drive mode.
  • Single-motor four-wheel drive mode uses odd-numbered axis motor 1 or even-numbered axis motor 24 as the power source, and when odd-numbered axis motor 1 is used as the power source, the power is transmitted through the odd-numbered axis first-speed driving gear 2, odd-numbered axis first-speed driven gear 5 or odd-numbered axis The second-speed driving gear 4 and the odd-numbered shaft second-speed driven gear 7 are transmitted to the odd-numbered shaft first output gear 8 and the rear-wheel output shaft gear 14.
  • the second combination sleeve 9 and the odd-numbered shaft first output gear 8 or odd-numbered shaft The two output gears 11 are combined, and the front and rear drive shafts are combined with the sleeve 13; when the even-numbered shaft motor 24 is used as the power source, the power is transmitted through the even-numbered shaft first-speed driving gear 21, the even-numbered shaft first-speed driven gear 22 or the even-numbered shaft second-speed driving gear 19 , The even-numbered shaft second gear driven gear 18 is transmitted to the even-numbered shaft first output gear 17 and the rear wheel output shaft gear 14, at this time the fourth coupling sleeve 16 is combined with the even-numbered shaft first output gear 17 or the even-numbered shaft second output gear 15 , The front and rear drive shafts are combined with the sleeve 13.
  • the power output by the odd-numbered shaft motor 1 is transmitted to the odd-numbered shaft first output gear 8 through the odd-numbered shaft first-speed driving gear 2 and the odd-numbered shaft first-speed driven gear 5 And the rear wheel output shaft gear 14, and then through the rear wheel drive shaft 25, through the rear axle differential 26 to transmit to the wheels;
  • the power generated by the even-numbered shaft motor 24 through the even-numbered shaft first-speed driving gear 21 and even-numbered shaft first-speed driven gear 22 is transmitted to the even-numbered shaft first output gear 17 and the rear wheel output shaft gear 14, and then through the rear wheel drive shaft 25, through the rear axle differential 26 to the wheels;
  • the odd-numbered shaft first output gear 8, the even-numbered shaft first output gear 17 and the rear wheel output shaft gear 14 are coupled together and output; or the power output by the odd-numbered shaft motor 1 is transmitted through the odd-numbered shaft second gear driving gear 4 and the odd-numbered shaft second gear
  • the dual-motor four-wheel drive mode is divided into two situations, namely the four-wheel drive mode after power coupling and the four-wheel drive mode with two motors driving the front and rear axles.
  • the front and rear drive shaft coupling sleeves 13 are combined. After the power is coupled, the front wheel drive shaft 27 and the rear wheel drive shaft 25 passes to the four wheels.
  • the odd-numbered axis motor 1 is used as a power source to generate power through the odd-numbered axis first-speed driving gear 2 and the odd-numbered axis first-speed driven gear 5 or odd-numbered axis second-speed driving
  • the gear 4 and the odd-numbered shaft second-speed driven gear 7 are transmitted to the odd-numbered shaft intermediate shaft 10.
  • the second coupling sleeve 9 is combined with the odd-numbered shaft first output gear 8, the odd-numbered shaft first output gear 8 and the rear wheel output shaft gear 14
  • the power is transmitted to the rear wheel drive shaft 25, through the rear wheel differential 26 to the two rear wheels;
  • the even-numbered shaft motor 24 as a power source generates power through the gear pair through the even-numbered shaft first-speed driving gear 21 and the even-numbered shaft one Gear driven gear 22 or even-numbered shaft second-speed driving gear 19 and even-numbered shaft second-speed driven gear 18 are transmitted to the even-numbered intermediate shaft 23.
  • the fourth coupling sleeve 16 is combined with the even-numbered second output gear 15 and the even-numbered shaft
  • the second output gear 15 and the front wheel output shaft gear 12 transfer the power to the front wheel drive shaft 27, and transmit it to the two front wheels via the front wheel differential 28 to realize the four-wheel drive function; or the odd-numbered shaft motor 1 is used as the power source to generate
  • the power is transmitted to the odd-numbered shaft intermediate shaft 10 through the odd-numbered shaft first-speed driving gear 2 and odd-numbered shaft first-speed driven gear 5 or odd-numbered shaft second-speed driving gear 4 and odd-numbered shaft second-speed driven gear 7 to the odd-numbered shaft intermediate shaft 10.
  • the sleeve 9 is combined with the odd-numbered shaft second output gear 11, the odd-numbered shaft second output gear 11 and the front wheel output shaft gear 12 transmit power to the front wheel drive shaft 27, and transmit the power to the two front wheels via the front wheel differential 28;
  • the power generated by the even-numbered shaft motor 24 as a power source is transmitted to the even number through the gear pair via the even-numbered shaft first-speed driving gear 21 and the even-numbered shaft first-speed driven gear 22 or the even-numbered shaft second-speed driving gear 19 and the even-numbered shaft second-speed driven gear 18 Shaft intermediate shaft 23.
  • the fourth coupling sleeve 16 is combined with the first output gear 17 of the even-numbered shaft.
  • the first output gear 17 of the even-numbered shaft and the rear-wheel output shaft gear 14 transmit power to the rear-wheel drive shaft 25.
  • the speedometer 26 is transmitted to the two rear wheels to realize the four-wheel drive function.
  • the invention utilizes the coordinated control of the dual motors, which can make the motors work in the high-efficiency area to the maximum, and improves the efficiency of the transmission system; the coordinated control of the dual motors is used to realize the four-wheel drive mode and the two-wheel drive mode.
  • the present invention uses the sensor information to synchronously control the speed during the shift process, which can reduce the impact during the shift process.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种可实现四轮驱动的传动系统及其工作模式。该传动系统包括奇数轴电动机（1）、偶数轴电动机（24）、前轮传动轴（27）、后轮传动轴（25）、以及设置在前轮传动轴上（27）的前轮输出轴齿轮（12）、设置在后轮传动轴（25）上的后轮输出轴齿轮（14），所述前轮输出轴齿轮（12）与后轮输出轴齿轮（14）通过前后驱动轴结合套（13）相连。该传动系统利用双电机的协调控制，能够使电机最大限度的工作在高效区，提高了传递系统的效率；利用双电机的协调控制来实现四轮驱动模式和两轮驱动模式；且该传动系统通过利用传感器信息，对换挡过程进行转速同步控制，能够减小换挡过程中的冲击。

Description

一种可实现四轮驱动的传动系统及其工作模式
本申请要求于2019年5月27日提交中国专利局、申请号为201910445649.7、发明名称为“一种可实现四轮驱动的传动系统及其工作模式”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及车辆传动领域，特别是涉及一种可实现四轮驱动的传动系统及其工作模式。
背景技术
自动变速器是相对于手动变速器而出现的一种能根据汽车车速和发动机转速来进行自动换挡的变速装置，目前自动变速器可分为AT(液力自动变速器)、AMT(电控机械自动变速器)、CVT(无级自动变速器)和DCT(双离合器自动变速器)。
DCT(双离合自动变速器)是通过将两个AMT(电控机械自动变速器)进行组合并优化的一种动力传递变速装置。在换挡过程中，通过两个离合的协调控制(一个离合器断开，另一个离合器结合来实现无动力中断换挡)。DCT在换挡过程中的动力传递是靠两个离合器的结合和分离来完成，离合器靠主动盘和从动盘的摩擦实现转矩的传递，由于在动力传递过程中存在摩擦，所以存在能量损失，并且摩擦产生大量的热，容易出现离合器的烧蚀，影响离合器的动力传递性能。
电机具有低速下恒转矩和高速下恒功率，响应速度快等特性。根据驱动电机这些特性，将其运用在车辆驱动系统中，可以减少变速箱挡位设置，减轻动力传递系统的重量。运用单个电机驱动的缺点是：当需求功率和转矩较高时，需要较大体积的电机，在高速阶段，电机的转矩出现非线性的下降，不能满足车辆在某些工况下在高速时需要较大转矩的需求。
发明内容
本发明的目的是提供一种可实现四轮驱动的传动系统及其工作模式，通过将双电机进行结合，利用双电机的快速响应控制代替离合器的控制，实现无动力中断，且可实现四轮驱动的功能。
为实现上述目的，本发明提供了如下方案：
一种可实现四轮驱动的传动系统，包括奇数轴电动机、偶数轴电动机、 前轮传动轴、后轮传动轴、以及设置在前轮传动轴上的前轮输出轴齿轮、设置在后轮传动轴上的后轮输出轴齿轮，所述前轮输出轴齿轮与后轮输出轴齿轮通过前后驱动轴结合套相连；所述奇数轴电动机的输出轴上沿远离奇数轴电动机方向分别设置有奇数轴一挡主动齿轮与奇数轴二挡主动齿轮；奇数轴一挡主动齿轮与奇数轴一挡从动齿轮相啮合、奇数轴二挡主动齿轮与奇数轴二挡从动齿轮相啮合、奇数轴一挡从动齿轮与奇数轴二挡从动齿轮通过第一结合套相连；还包括贯穿奇数轴一挡从动齿轮、奇数轴二挡从动齿轮、第一结合套设置的奇数轴中间轴；所述奇数轴中间轴上还设有与后轮输出轴齿轮相啮合的奇数轴第一输出齿轮、以及与前轮输出轴齿轮相啮合的奇数轴第二输出齿轮，所述奇数轴第一输出齿轮与奇数轴第二输出齿轮通过第二结合套相连；所述偶数轴电动机的输出轴上沿远离偶数轴电动机方向分别设置有偶数轴一挡主动齿轮与偶数轴二挡主动齿轮；偶数轴一挡主动齿轮与偶数轴一挡从动齿轮相啮合、偶数轴二挡主动齿轮与偶数轴二挡从动齿轮相啮合、偶数轴一挡从动齿轮与偶数轴二挡从动齿轮通过第三结合套相连；还包括贯穿偶数轴一挡从动齿轮、偶数轴二挡从动齿轮、第三结合套设置的偶数轴中间轴；所述偶数轴中间轴上还设有与后轮输出轴齿轮相啮合的偶数轴第一输出齿轮、以及与前轮输出轴齿轮相啮合的偶数轴第二输出齿轮，所述偶数轴第一输出齿轮与偶数轴第二输出齿轮通过第四结合套相连。
可选的，还包括速度传感器，所述速度传感器与所述奇数轴一挡主动齿轮连接，用于监测所述奇数轴一挡主动齿轮的速度。
可选的，所述后轮传动轴上还连接有后轴差速器；所述前轮传动轴上还连接有前轴差速器。
本发明还提供了一种可实现四轮驱动的传动系统的工作模式，包括单电机模式与双电机模式；所述单电机模式包括单电机二驱模式、单电机四驱模式；所述双电机模式包括双电机二驱模式、双电机四驱模式。
可选的，单电机二驱模式以奇数轴电动机或偶数轴电动机作为动力源；单电机二驱模式以奇数轴电动机作为动力源时，动力经奇数轴一挡主动齿轮、奇数轴一挡从动齿轮或奇数轴二挡主动齿轮、奇数轴二挡从动齿轮传递到奇数轴第一输出齿轮和后轮输出轴齿轮，此时第二结合套与奇数 轴第一输出齿轮结合，前后驱动轴结合套断开，车辆工作于单电机驱动、车辆后驱模式；当第二结合套与奇数轴第二输出齿轮结合时，车辆工作于单电机驱动、车辆前驱模式；单电机二驱模式以偶数轴电动机作为动力源时，动力经偶数轴一挡主动齿轮、偶数轴一挡从动齿轮或偶数轴二挡主动齿轮、偶数轴二挡从动齿轮传递到偶数轴第一输出齿轮和后轮输出轴齿轮，此时第四结合套与偶数轴第一输出齿轮结合，前后驱动轴结合套断开，车辆工作于单电机驱动、车辆后驱模式；当第四结合套与偶数轴第二输出齿轮结合时，车辆工作于单电机驱动、车辆前驱模式。
可选的，单电机四驱模式以奇数轴电动机或偶数轴电动机作为动力源；单电机四驱模式以奇数轴电动机作为动力源时，动力经奇数轴一挡主动齿轮、奇数轴一挡从动齿轮或奇数轴二挡主动齿轮、奇数轴二挡从动齿轮传递到奇数轴第一输出齿轮和后轮输出轴齿轮，此时第二结合套与奇数轴第一输出齿轮或奇数轴第二输出齿轮结合，前后驱动轴结合套结合；单电机四驱模式以偶数轴电动机作为动力源时，动力经偶数轴一挡主动齿轮、偶数轴一挡从动齿轮或偶数轴二挡主动齿轮、偶数轴二挡从动齿轮传递到偶数轴第一输出齿轮和后轮输出轴齿轮，此时第四结合套与偶数轴第一输出齿轮或偶数轴第二输出齿轮结合，前后驱动轴结合套结合。
可选的，双电机二驱模式中，奇数轴电动机输出的动力经奇数轴一档主动齿轮和奇数轴第一从动齿轮，传递到奇数轴第一输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；偶数轴电动机产生的动力经偶数轴第一主动齿轮和偶数轴第一从动齿轮传递到偶数轴第一输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；奇数轴电动机与偶数轴电动机产生的转矩通过奇数轴第一输出齿轮、偶数轴第一输出齿轮和后轮输出轴齿轮耦合在一起输出；或奇数轴电动机输出的动力经奇数轴第二主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴第二输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；偶数轴电动机产生的动力经偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴第二输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；奇数轴电动机与偶数轴电动机产生的转矩通过奇数轴第二输出齿轮、偶数轴第二输出齿轮和后轮输出轴齿轮耦合在一起输出。
可选的，双电机四驱模式分为两种情况，分别为动力耦合后四驱模式以及两电机分别驱动前后轴四驱模式。
可选的，在动力耦合后四驱模式中，在双电机二驱模式的基础上，结合前后驱动轴结合套，动力耦合后，再通过前轮传动轴以及后轮传动轴传递到四个车轮。
可选的，在电机分别驱动前后轴四驱模式中，奇数轴电动机作为动力源产生的动力经奇数轴一挡主动齿轮和奇数轴一挡从动齿轮或奇数轴二挡主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴中间轴、此时第二结合套与奇数轴第一输出齿轮结合，奇数轴第一输出齿轮和后轮输出轴齿轮将动力传递到后轮传动轴并传递到两个后轮；偶数轴电动机作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮和偶数轴一挡从动齿轮或偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴中间轴，此时第四结合套与偶数轴第二输出齿轮结合，偶数轴第二输出齿轮与前轮输出轴齿轮将动力传递到前轮传动轴并传递到两个前轮上，实现四驱功能；或奇数轴电动机作为动力源产生的动力经奇数轴一挡主动齿轮和奇数轴一挡从动齿轮或奇数轴二挡主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴中间轴、此时第二结合套与奇数轴第二输出齿轮结合，奇数轴第二输出齿轮和前轮输出轴齿轮将动力传递到前轮传动轴并传递到两个前轮；偶数轴电动机作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮和偶数轴一挡从动齿轮或偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴中间轴，此时第四结合套与偶数轴第一输出齿轮结合，偶数轴第一输出齿轮与后轮输出轴齿轮将动力传递到后轮传动轴并传递到两个后轮上，实现四驱功能。
与现有技术相比，本发明具有以下技术效果：本发明利用双电机的协调控制，能够使电机最大限度的工作在高效区，提高了传递系统的效率；利用双电机的协调控制来实现四轮驱动模式和两轮驱动模式。且本发明通过利用传感器信息，对换挡过程进行转速同步控制，能够减小换挡过程中的冲击。
说明书附图
下面结合附图对本发明作进一步说明：
图1为本发明实施例可实现四轮驱动的传动系统的结构示意图；
图2为本发明实施例单电机二驱模式中，采用奇数轴电动机作为动力源驱动后轮的动力流向图；
图3为本发明实施例单电机二驱模式中，采用奇数轴电动机作为动力源驱动前轮的动力流向图；
图4为本发明实施例双电机二驱模式中，驱动前轮的动力流向图；
图5为本发明实施例双电机二驱模式中，驱动后轮的动力流向图；
图6为本发明实施例双电机四驱模式中，动力耦合后四驱模式的动力流向图；
图7为本发明实施例双电机四驱模式中，两电机分别驱动前后轴四驱模式的动力流向图。
具体实施方式
图1为本发明实施例可实现四轮驱动的传动系统的结构示意图。如图1所示，一种可实现四轮驱动的传动系统，包括奇数轴电动机1、偶数轴电动机24、前轮传动轴27、后轮传动轴25、以及设置在前轮传动轴27上的前轮输出轴齿轮12、设置在后轮传动轴25上的后轮输出轴齿轮14，所述前轮输出轴齿轮12与后轮输出轴齿轮14通过前后驱动轴结合套13相连；所述奇数轴电动机1的输出轴上沿远离奇数轴电动机1方向分别设置有奇数轴一挡主动齿轮2与奇数轴二挡主动齿轮4；奇数轴一挡主动齿轮2与奇数轴一挡从动齿轮5相啮合、奇数轴二挡主动齿轮4与奇数轴二挡从动齿轮7相啮合、奇数轴一挡从动齿轮5与奇数轴二挡从动齿轮7通过第一结合套6相连；还包括贯穿奇数轴一挡从动齿轮5、奇数轴二挡从动齿轮7、第一结合套6设置的奇数轴中间轴10；所述奇数轴中间轴10上还设有与后轮输出轴齿轮14相啮合的奇数轴第一输出齿轮8、以及与前轮输出轴齿轮12相啮合的奇数轴第二输出齿轮11，所述奇数轴第一输出齿轮8与奇数轴第二输出齿轮11通过第二结合套9相连；所述偶数轴电动机24的输出轴上沿远离偶数轴电动机24方向分别设置有偶数轴一挡主动齿轮21与偶数轴二挡主动齿轮19；偶数轴一挡主动齿轮21与偶数轴一挡从动齿轮22相啮合、偶数轴二挡主动齿轮19与偶数轴二挡从动齿轮18相啮合、偶数轴一挡从动齿轮22与偶数轴二挡从动齿轮18通过 第三结合套20相连；还包括贯穿偶数轴一挡从动齿轮22、偶数轴二挡从动齿轮18、第三结合套20设置的偶数轴中间轴23；所述偶数轴中间轴23上还设有与后轮输出轴齿轮14相啮合的偶数轴第一输出齿轮17、以及与前轮输出轴齿轮12相啮合的偶数轴第二输出齿轮15，所述偶数轴第一输出齿轮17与偶数轴第二输出齿轮15通过第四结合套16相连。
还包括用于监测奇数轴一挡主动齿轮2速度的速度传感器3；所述后轮传动轴25上还连接有后轴差速器26；所述前轮传动轴27上还连接有前轴差速器28。
本发明还提供了一种应用于上述可实现四轮驱动的传动系统的工作模式，包括单电机模式与双电机模式；所述单电机模式包括单电机二驱模式、单电机四驱模式；所述双电机模式包括双电机二驱模式、双电机四驱模式。
单电机二驱模式以奇数轴电动机1或偶数轴电动机24作为动力源。如图2、图3所示，单电机二驱模式以奇数轴电动机1作为动力源时，动力经奇数轴一挡主动齿轮2、奇数轴一挡从动齿轮5或奇数轴二挡主动齿轮4、奇数轴二挡从动齿轮7传递到奇数轴第一输出齿轮8和后轮输出轴齿轮14，此时第二结合套9与奇数轴第一输出齿轮8结合，前后驱动轴结合套13断开，车辆工作于单电机驱动，车辆后驱模式；当第二结合套9与奇数轴第二输出齿轮11结合时，车辆工作于单电机驱动、车辆前驱模式；
单电机二驱模式以偶数轴电动机24作为动力源时，动力经偶数轴一挡主动齿轮21、偶数轴一挡从动齿轮22或偶数轴二挡主动齿轮19、偶数轴二挡从动齿轮18传递到偶数轴第一输出齿轮17和后轮输出轴齿轮14，此时第四结合套16与偶数轴第一输出齿轮17结合，前后驱动轴结合套13断开，车辆工作于单电机驱动，车辆后驱模式；当第四结合套16与偶数轴第二输出齿轮15结合时，车辆工作于单电机驱动、车辆前驱模式。
单电机四驱模式以奇数轴电动机1或偶数轴电动机24作为动力源，以奇数轴电动机1作为动力源时，动力经奇数轴一挡主动齿轮2、奇数轴一挡从动齿轮5或奇数轴二挡主动齿轮4、奇数轴二挡从动齿轮7传递到 奇数轴第一输出齿轮8和后轮输出轴齿轮14，此时第二结合套9与奇数轴第一输出齿轮8或奇数轴第二输出齿轮11结合，前后驱动轴结合套13结合；以偶数轴电动机24作为动力源时，动力经偶数轴一挡主动齿轮21、偶数轴一挡从动齿轮22或偶数轴二挡主动齿轮19、偶数轴二挡从动齿轮18传递到偶数轴第一输出齿轮17和后轮输出轴齿轮14，此时第四结合套16与偶数轴第一输出齿轮17或偶数轴第二输出齿轮15结合，前后驱动轴结合套13结合。
如图4、图5所示，双电机二驱模式中，奇数轴电动机1输出的动力经奇数轴一挡主动齿轮2和奇数轴一挡从动齿轮5，传递到奇数轴第一输出齿轮8和后轮输出轴齿轮14，然后通过后轮传动轴25，经后轴差速器26传递到车轮；偶数轴电动机24产生的动力经偶数轴一挡主动齿轮21和偶数轴一挡从动齿轮22传递到偶数轴第一输出齿轮17和后轮输出轴齿轮14，然后通过后轮传动轴25，经后轴差速器26传递到车轮；奇数轴电动机1与偶数轴电动机24产生的转矩通过奇数轴第一输出齿轮8、偶数轴第一输出齿轮17和后轮输出轴齿轮14耦合在一起输出；或奇数轴电动机1输出的动力经奇数轴二挡主动齿轮4和奇数轴二挡从动齿轮7，传递到奇数轴第二输出齿轮11和后轮输出轴齿轮14，然后通过后轮传动轴25，经后轴差速器26传递到车轮；偶数轴电动机24产生的动力经偶数轴二挡主动齿轮19和偶数轴二挡从动齿轮18传递到偶数轴第二输出齿轮15和后轮输出轴齿轮14，然后通过后轮传动轴25，经后轴差速器26传递到车轮；奇数轴电动机1与偶数轴电动机24产生的转矩通过奇数轴第二输出齿轮11、偶数轴第二输出齿轮15和后轮输出轴齿轮14耦合在一起输出。
双电机四驱模式分为两种情况，分别为动力耦合后四驱模式以及两电机分别驱动前后轴四驱模式。如图6所示，在动力耦合后四驱模式中，在双电机二驱模式的基础上，结合前后驱动轴结合套13，动力耦合后，然后再通过前轮传动轴27以及后轮传动轴25传递到四个车轮。
如图7所示，在电机分别驱动前后轴四驱模式中，奇数轴电动机1作为动力源产生的动力经奇数轴一挡主动齿轮2和奇数轴一挡从动齿轮5或奇数轴二挡主动齿轮4和奇数轴二挡从动齿轮7，传递到奇数轴中间轴 10、此时第二结合套9与奇数轴第一输出齿轮8结合，奇数轴第一输出齿轮8和后轮输出轴齿轮14将动力传递到后轮传动轴25，经后轮差速器26传递到两个后轮；偶数轴电动机24作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮21和偶数轴一挡从动齿轮22或偶数轴二挡主动齿轮19和偶数轴二挡从动齿轮18传递到偶数轴中间轴23，此时第四结合套16与偶数轴第二输出齿轮15结合，偶数轴第二输出齿轮15与前轮输出轴齿轮12将动力传递到前轮传动轴27，经前轮差速器28传递到两个前轮上，实现四驱功能；或奇数轴电动机1作为动力源产生的动力经奇数轴一挡主动齿轮2和奇数轴一挡从动齿轮5或奇数轴二挡主动齿轮4和奇数轴二挡从动齿轮7，传递到奇数轴中间轴10、此时第二结合套9与奇数轴第二输出齿轮11结合，奇数轴第二输出齿轮11和前轮输出轴齿轮12将动力传递到前轮传动轴27，经前轮差速器28传递到两个前轮；偶数轴电动机24作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮21和偶数轴一挡从动齿轮22或偶数轴二挡主动齿轮19和偶数轴二挡从动齿轮18传递到偶数轴中间轴23，此时第四结合套16与偶数轴第一输出齿轮17结合，偶数轴第一输出齿轮17与后轮输出轴齿轮14将动力传递到后轮传动轴25，经后轮差速器26传递到两个后轮上，实现四驱功能。
本发明利用双电机的协调控制，能够使电机最大限度的工作在高效区，提高了传递系统的效率；利用双电机的协调控制来实现四轮驱动模式和两轮驱动模式。且本发明通过利用传感器信息，对换挡过程进行转速同步控制，能够减小换挡过程中的冲击。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。

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  1. 一种可实现四轮驱动的传动系统，其特征在于：包括奇数轴电动机、偶数轴电动机、前轮传动轴、后轮传动轴、以及设置在前轮传动轴上的前轮输出轴齿轮、设置在后轮传动轴上的后轮输出轴齿轮，所述前轮输出轴齿轮与后轮输出轴齿轮通过前后驱动轴结合套相连；所述奇数轴电动机的输出轴上沿远离奇数轴电动机方向分别设置有奇数轴一挡主动齿轮与奇数轴二挡主动齿轮；奇数轴一挡主动齿轮与奇数轴一挡从动齿轮相啮合、奇数轴二挡主动齿轮与奇数轴二挡从动齿轮相啮合、奇数轴一挡从动齿轮与奇数轴二挡从动齿轮通过第一结合套相连；还包括贯穿奇数轴一挡从动齿轮、奇数轴二挡从动齿轮、第一结合套设置的奇数轴中间轴；所述奇数轴中间轴上还设有与后轮输出轴齿轮相啮合的奇数轴第一输出齿轮、以及与前轮输出轴齿轮相啮合的奇数轴第二输出齿轮，所述奇数轴第一输出齿轮与奇数轴第二输出齿轮通过第二结合套相连；所述偶数轴电动机的输出轴上沿远离偶数轴电动机方向分别设置有偶数轴一挡主动齿轮与偶数轴二挡主动齿轮；偶数轴一挡主动齿轮与偶数轴一挡从动齿轮相啮合、偶数轴二挡主动齿轮与偶数轴二挡从动齿轮相啮合、偶数轴一挡从动齿轮与偶数轴二挡从动齿轮通过第三结合套相连；还包括贯穿偶数轴一挡从动齿轮、偶数轴二挡从动齿轮、第三结合套设置的偶数轴中间轴；所述偶数轴中间轴上还设有与后轮输出轴齿轮相啮合的偶数轴第一输出齿轮、以及与前轮输出轴齿轮相啮合的偶数轴第二输出齿轮，所述偶数轴第一输出齿轮与偶数轴第二输出齿轮通过第四结合套相连。
  2. 根据权利要求1所述的可实现四轮驱动的传动系统，其特征在于：还包括速度传感器，所述速度传感器与所述奇数轴一挡主动齿轮连接，用于监测所述奇数轴一挡主动齿轮的速度。
  3. 根据权利要求1所述的可实现四轮驱动的传动系统，其特征在于：所述后轮传动轴上还连接有后轴差速器；所述前轮传动轴上还连接有前轴差速器。
  4. 一种可实现四轮驱动的传动系统的工作模式，应用如权利要求1～3任一项中所述的可实现四轮驱动的传动系统，其特征在于：包括单电机 模式与双电机模式；所述单电机模式包括单电机二驱模式、单电机四驱模式；所述双电机模式包括双电机二驱模式、双电机四驱模式。
  5. 根据权利要求4中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：单电机二驱模式以奇数轴电动机或偶数轴电动机作为动力源；单电机二驱模式以奇数轴电动机作为动力源时，动力经奇数轴一挡主动齿轮、奇数轴一挡从动齿轮或奇数轴二挡主动齿轮、奇数轴二挡从动齿轮传递到奇数轴第一输出齿轮和后轮输出轴齿轮，此时第二结合套与奇数轴第一输出齿轮结合，前后驱动轴结合套断开，车辆工作于单电机驱动、车辆后驱模式；当第二结合套与奇数轴第二输出齿轮结合时，车辆工作于单电机驱动、车辆前驱模式；单电机二驱模式以偶数轴电动机作为动力源时，动力经偶数轴一挡主动齿轮、偶数轴一挡从动齿轮或偶数轴二挡主动齿轮、偶数轴二挡从动齿轮传递到偶数轴第一输出齿轮和后轮输出轴齿轮，此时第四结合套与偶数轴第一输出齿轮结合，前后驱动轴结合套断开，车辆工作于单电机驱动、车辆后驱模式；当第四结合套与偶数轴第二输出齿轮结合时，车辆工作于单电机驱动、车辆前驱模式。
  6. 根据权利要求4中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：单电机四驱模式以奇数轴电动机或偶数轴电动机作为动力源；单电机四驱模式以奇数轴电动机作为动力源时，动力经奇数轴一挡主动齿轮、奇数轴一挡从动齿轮或奇数轴二挡主动齿轮、奇数轴二挡从动齿轮传递到奇数轴第一输出齿轮和后轮输出轴齿轮，此时第二结合套与奇数轴第一输出齿轮或奇数轴第二输出齿轮结合，前后驱动轴结合套结合；单电机四驱模式以偶数轴电动机作为动力源时，动力经偶数轴一挡主动齿轮、偶数轴一挡从动齿轮或偶数轴二挡主动齿轮、偶数轴二挡从动齿轮传递到偶数轴第一输出齿轮和后轮输出轴齿轮，此时第四结合套与偶数轴第一输出齿轮或偶数轴第二输出齿轮结合，前后驱动轴结合套结合。
  7. 根据权利要求4中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：双电机二驱模式中，奇数轴电动机输出的动力经奇数轴一档主动齿轮和奇数轴第一从动齿轮，传递到奇数轴第一输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；偶数轴电动机产生的动力经偶数轴第一主动齿轮和偶数轴第一从动齿轮传递到偶数轴第一输出齿轮 和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；奇数轴电动机与偶数轴电动机产生的转矩通过奇数轴第一输出齿轮、偶数轴第一输出齿轮和后轮输出轴齿轮耦合在一起输出；或奇数轴电动机输出的动力经奇数轴第二主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴第二输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；偶数轴电动机产生的动力经偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴第二输出齿轮和后轮输出轴齿轮，然后通过后轮传动轴并传递到车轮；奇数轴电动机与偶数轴电动机产生的转矩通过奇数轴第二输出齿轮、偶数轴第二输出齿轮和后轮输出轴齿轮耦合在一起输出。
  8. 根据权利要求7中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：双电机四驱模式分为两种情况，分别为动力耦合后四驱模式以及两电机分别驱动前后轴四驱模式。
  9. 根据权利要求8中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：在动力耦合后四驱模式中，在双电机二驱模式的基础上，结合前后驱动轴结合套，动力耦合后，再通过前轮传动轴以及后轮传动轴传递到四个车轮。
  10. 根据权利要求8中所述的可实现四轮驱动的传动系统的工作模式，其特征在于：在电机分别驱动前后轴四驱模式中，奇数轴电动机作为动力源产生的动力经奇数轴一挡主动齿轮和奇数轴一挡从动齿轮或奇数轴二挡主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴中间轴、此时第二结合套与奇数轴第一输出齿轮结合，奇数轴第一输出齿轮和后轮输出轴齿轮将动力传递到后轮传动轴并传递到两个后轮；偶数轴电动机作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮和偶数轴一挡从动齿轮或偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴中间轴，此时第四结合套与偶数轴第二输出齿轮结合，偶数轴第二输出齿轮与前轮输出轴齿轮将动力传递到前轮传动轴并传递到两个前轮上，实现四驱功能；或奇数轴电动机作为动力源产生的动力经奇数轴一挡主动齿轮和奇数轴一挡从动齿轮或奇数轴二挡主动齿轮和奇数轴二挡从动齿轮，传递到奇数轴中间轴、此时第二结合套与奇数轴第二输出齿轮结合，奇数轴第二输出齿轮和前轮输出轴齿轮将动力传递到前轮传动轴并传递到两个前轮；偶数轴电动 机作为动力源产生的动力经齿轮副经偶数轴一挡主动齿轮和偶数轴一挡从动齿轮或偶数轴二挡主动齿轮和偶数轴二挡从动齿轮传递到偶数轴中间轴，此时第四结合套与偶数轴第一输出齿轮结合，偶数轴第一输出齿轮与后轮输出轴齿轮将动力传递到后轮传动轴并传递到两个后轮上，实现四驱功能。
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