WO2022067632A1 - Electric vehicle and electric power system comprising same - Google Patents

Electric vehicle and electric power system comprising same Download PDF

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Publication number
WO2022067632A1
WO2022067632A1 PCT/CN2020/119272 CN2020119272W WO2022067632A1 WO 2022067632 A1 WO2022067632 A1 WO 2022067632A1 CN 2020119272 W CN2020119272 W CN 2020119272W WO 2022067632 A1 WO2022067632 A1 WO 2022067632A1
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power
electric motor
output
electrified
clutch
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PCT/CN2020/119272
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French (fr)
Chinese (zh)
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杨佳宁
董婷婷
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罗伯特·博世有限公司
杨佳宁
董婷婷
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Priority to PCT/CN2020/119272 priority Critical patent/WO2022067632A1/en
Publication of WO2022067632A1 publication Critical patent/WO2022067632A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/02Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/02Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/32Control or regulation of multiple-unit electrically-propelled vehicles

Abstract

An electric power system (3) for an electric vehicle, comprising a traveling unit (31) for driving the electric vehicle to move forward and backward and an operation unit (32) for performing various operations, wherein the traveling unit (31) comprises a first motor (311), a power transmission mechanism (312), a differential (313) and driving wheels (314), and wherein the operation unit (32) comprises a second motor (321), an operation drive system (322) and an operation device (323). The electric power system (3) further comprises: a power combination device for combining the output power of the first motor (311) and the second motor (321) and then providing the combined power to the power transmission mechanism (312); and a switch device (33) respectively connected to a power output end of the second motor (321), an input end of the power combination device and an input end of the operation drive system (322). In a driving mode, the switch device (33) is in a first operating state so that the output power of the second motor (321) is only transmitted to the power combination device through the switch device (33), and accordingly, the output power coming from the first motor (311) and the second motor (311) is combined by the power combination device and then output to the differential (313). In an operation mode, the switch device (33) is in a second operating state so that the output power of the second motor (321) is only transmitted to the operation drive system (322).

Description

电动车辆及其包括的电气化动力系统Electric vehicles and electrified powertrains they include 技术领域technical field
本发明涉及电动车辆及其包括的动力系统,且更具体地涉及一种例如街道清扫车的电动车辆及其包括的电气化动力系统。The present invention relates to electric vehicles and powertrains including them, and more particularly to an electric vehicle, such as a street sweeper, and electrified powertrains including them.
背景技术Background technique
街道清扫车是一种市政车辆,用于清洁街道。街道清扫车的动力系统包括有行驶单元和作业单元。行驶单元用于通过驱动车轮推动车辆向前和向后移动,而作业单元用于通过包括有抽风机、刷子等装置的清扫设备进行清洁街道。相应地,街道清扫车具有两种基本的操作模式:行驶模式和作业模式。在行驶模式下,街道清扫车就像在街道上其它车辆一样行驶而不清洁街道,同时作业单元处于不工作状态;在作业模式中,街道清扫车以低速行驶并清洁街道,作业单元处于作业状态。A street sweeper is a municipal vehicle used to clean streets. The power system of the street sweeper includes a driving unit and a working unit. The travel unit is used to propel the vehicle forward and backward by driving the wheels, and the work unit is used to clean the street by means of sweeping equipment including exhaust fans, brushes, etc. Accordingly, street sweepers have two basic modes of operation: a driving mode and a work mode. In the driving mode, the street sweeper drives like other vehicles on the street without cleaning the street, and the work unit is in a non-working state; in the work mode, the street sweeper drives at a low speed and cleans the street, and the work unit is in the working state .
图1示出了现有技术中街道清扫车的常规燃油动力系统1的结构布局。如图1所示,现有技术中的街道清扫车的常规燃油动力系统1包括有行驶单元11和作业单元12。行驶单元11包括有底盘发动机111;离合器112,其一端与底盘发动机111的功率输出端相连;具有变速功能的动力传输机构113,在图1所示的示例中,为图示简洁清晰,该动力传输机构113被示出由一组齿轮副组成(根据具体应用情况,可选择一组或多组齿轮副,且各组齿轮副的传动比可根据需要而相应设定),该组齿轮副包括有与离合器112的另一端相连的输入端1131、与输入端1131连接的第一齿轮1133、与第一齿轮1133相啮合的第二齿轮1134以及与第二齿轮1134相连的输出端1132,其中第一齿轮1133和第二齿轮1134的齿数比根据所需的传动比而设定;差速器114,其输入端与动力传输机构113的输出端1132相连;以及驱动 车轮115,其与差速器114的输出端相连。作业单元12包括有辅助发动机121;离合器122,其一端与辅助发动机121的功率输出端相连;作业驱动系统(液压系统)123,其输入端与离合器122的另一端相连;以及清扫设备124,其与作业驱动系统(液压系统)123的输出端相连,清扫设备124包括有抽风机1241、刷子1242等装置,这些装置通过作业驱动系统(液压系统)123的输出动力被驱动而进行清洁街道的作业。FIG. 1 shows the structural layout of a conventional fuel power system 1 of a street sweeper in the prior art. As shown in FIG. 1 , a conventional fuel power system 1 of a street sweeper in the prior art includes a traveling unit 11 and a working unit 12 . The driving unit 11 includes a chassis engine 111; a clutch 112, one end of which is connected to the power output end of the chassis engine 111; a power transmission mechanism 113 with a speed change function, in the example shown in FIG. The transmission mechanism 113 is shown to be composed of a set of gear pairs (one or more sets of gear pairs can be selected according to the specific application, and the transmission ratio of each set of gear pairs can be correspondingly set as required), and the set of gear pairs includes There is an input end 1131 connected with the other end of the clutch 112, a first gear 1133 connected with the input end 1131, a second gear 1134 meshed with the first gear 1133, and an output end 1132 connected with the second gear 1134, wherein the The gear ratio of the first gear 1133 and the second gear 1134 is set according to the required transmission ratio; the differential 114, the input end of which is connected to the output end 1132 of the power transmission mechanism 113; and the driving wheels 115, which are connected to the differential The output of 114 is connected. The work unit 12 includes an auxiliary engine 121; a clutch 122, one end of which is connected to the power output end of the auxiliary engine 121; a work drive system (hydraulic system) 123, whose input end is connected to the other end of the clutch 122; and a cleaning device 124, which Connected to the output end of the work drive system (hydraulic system) 123, the cleaning equipment 124 includes devices such as an exhaust fan 1241, a brush 1242, etc. These devices are driven by the output power of the work drive system (hydraulic system) 123 to perform street cleaning operations .
在行驶模式下,分别与底盘发动机111和动力传输机构113相连接的离合器112处于结合状态,以将底盘发动机111输出的功率传输至动力传输机构113,进而通过动力传输机构113(变速处理)以及与动力传输机构113相连接的差速器114(减速及差速处理)将动力传输至驱动车轮115,使得驱动车轮115被驱动,从而街道清扫车处于行驶状态。同时,在行驶模式下,作业单元12中的离合器122处于分离状态,使得辅助发动机121产生的功率无法通过离合器122而传输至作业驱动系统(液压系统)123,进而使得与作业驱动系统(液压系统)123相连接的清扫设备124不被驱动进行作业。In the running mode, the clutches 112 respectively connected to the chassis engine 111 and the power transmission mechanism 113 are in a coupled state, so as to transmit the power output from the chassis engine 111 to the power transmission mechanism 113, and then through the power transmission mechanism 113 (shift processing) and The differential 114 (deceleration and differential processing) connected to the power transmission mechanism 113 transmits the power to the driving wheels 115 so that the driving wheels 115 are driven so that the street sweeper is in a running state. At the same time, in the driving mode, the clutch 122 in the work unit 12 is in a disengaged state, so that the power generated by the auxiliary engine 121 cannot be transmitted to the work drive system (hydraulic system) 123 through the clutch 122, thereby making it compatible with the work drive system (hydraulic system). ) 123 connected to the cleaning device 124 is not driven to work.
在作业模式下,离合器112和122都处于结合状态,使得底盘发动机111输出的功率传输至驱动车轮115,从而街道清扫车处于行驶状态。同时,辅助发动机121输出的功率也被传输至清扫设备124,使得清扫设备124被驱动,清扫设备124中包括的抽风机1241、刷子1242等装置处于作业状态而对街道进行清扫。In the working mode, the clutches 112 and 122 are both engaged, so that the power output from the chassis engine 111 is transmitted to the drive wheels 115, so that the street sweeper is in a running state. At the same time, the power output by the auxiliary engine 121 is also transmitted to the cleaning device 124, so that the cleaning device 124 is driven, and the exhaust fan 1241, the brush 1242 and other devices included in the cleaning device 124 are in operation to clean the street.
由于日益增长的对环境保护和节能的需求,街道清扫车的电气化动力传动系统在市场上越来越流行普遍。Electrified powertrains for street sweepers are becoming more and more popular in the market due to the growing demand for environmental protection and energy saving.
图2示出了现有技术中街道清扫车的电气化动力系统2的结构布局。图2所示的电气化动力系统2与图1所示的常规燃油动力系统1的结构区别在于:(1)常规动力系统1中的行驶单元11中包括的底盘发动机111被电气化动力系统2中的行驶单元21中包括的第一电动机211所替代;常规动力系统1中的作业单元12中包括的辅助发动机121被电气化动力系统2中的作业单元22中包括的第二电动机 221所替代;;(2)在电气化动力系统2中,没有包括常规动力系统1中的离合器112和122,第一电动机211的功率输出端直接与动力传输机构113相连接,第二电动机221的功率输出端直接与作业驱动系统(液压系统)123相连接。FIG. 2 shows the structural layout of the electrified power system 2 of the street sweeper in the prior art. The structural difference between the electrified power system 2 shown in FIG. 2 and the conventional fuel power system 1 shown in FIG. 1 is that: (1) the chassis engine 111 included in the traveling unit 11 in the conventional power system 1 is The first electric motor 211 included in the travel unit 21 is replaced; the auxiliary engine 121 included in the work unit 12 in the conventional power system 1 is replaced by the second electric motor 221 included in the work unit 22 in the electrified power system 2; ( 2) In the electrified power system 2, the clutches 112 and 122 in the conventional power system 1 are not included, the power output end of the first electric motor 211 is directly connected with the power transmission mechanism 113, and the power output end of the second electric motor 221 A drive system (hydraulic system) 123 is connected.
图2所示的电气化动力系统2与图1所示的常规燃油动力系统1的工作原理基本类似,街道清扫车处于不同的操作模式时,对电动机的动力需求也不同。图3(a)和(b)分别示出了电气化动力系统2的行驶模式和作业模式。The working principle of the electrified power system 2 shown in FIG. 2 is basically similar to that of the conventional fuel power system 1 shown in FIG. 1 , and the power requirements of the electric motor are also different when the street sweeper is in different operation modes. FIGS. 3( a ) and ( b ) show the driving mode and the working mode of the electrified powertrain 2 , respectively.
如图3(a)所示,在行驶模式下,街道清扫车处于行驶状态。行驶单元21中的电动机211需要输出高功率以便驱动街道清扫车,而作业单元22中的电动机221则不需要输出功率。As shown in FIG. 3( a ), in the driving mode, the street sweeper is in a driving state. The electric motor 211 in the travel unit 21 needs to output high power in order to drive the street sweeper, while the electric motor 221 in the work unit 22 does not need to output power.
如图3(b)所示,在作业模式下,街道清扫车以低速行驶且作业单元12处于作业状态而通过清扫设备124清洁街道。因此,行驶单元21中的电动机211仅需要提供相对低的功率(与图3(a)中所示的行车模式下电动机211的输出功率相比),而作业单元22中的电动机221必须提供足够的功率以使清扫设备124中包括的抽风机1241、刷子1242等装置处于作业状态来对街道进行清扫。As shown in FIG. 3( b ), in the work mode, the street sweeper runs at a low speed and the work unit 12 is in the work state to clean the street by the sweeping device 124 . Therefore, the electric motor 211 in the travel unit 21 only needs to provide relatively low power (compared to the output power of the electric motor 211 in the travel mode shown in Fig. 3(a)), while the electric motor 221 in the work unit 22 must provide sufficient power The power of the cleaning equipment 124 is used to make the devices such as the exhaust fan 1241, the brush 1242 and the like included in the cleaning equipment 124 in the working state to clean the street.
可以显见,在图2所示的现有技术的电气化动力系统2中,在行驶模式下,作业单元22中的电动机221不需要输出功率而使其工作能力被完全浪费;并且在作业模式下,行驶单元21中的电动机211仅需要输出相对低的功率而使其不能高效率地工作。换言之,现有技术的电气化动力系统无法在街道清扫车处于不同的操作模式下有效地使用各电动机的输出功率,图2中所示的电气化动力系统2的结构存在不合理性,在提高电动机的使用效率,简化电气化动力系统的结构,降低电气化动力系统的成本等多方面具有可以明显优化改善的空间。It can be seen that in the prior art electrified power system 2 shown in FIG. 2, in the driving mode, the electric motor 221 in the working unit 22 does not need to output power and its working capacity is completely wasted; and in the working mode, The electric motor 211 in the travel unit 21 only needs to output relatively low power so that it cannot work efficiently. In other words, the electrified power system of the prior art cannot effectively use the output power of each electric motor when the street sweeper is in different operation modes, and the structure of the electrified power system 2 shown in FIG. 2 is unreasonable. There is room for obvious optimization and improvement in terms of efficiency of use, simplifying the structure of the electrified power system, and reducing the cost of the electrified power system.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种电动车辆及其包括的电气化动力系 统,其可以有效地提高电气化动力系统中电动机的使用效率,简化电气化动力系统的结构,降低电气化动力系统的成本。The purpose of the present invention is to provide an electric vehicle and an electrified power system thereof, which can effectively improve the use efficiency of the electric motor in the electrified power system, simplify the structure of the electrified power system, and reduce the cost of the electrified power system.
根据本发明的第一方面,提供了一种用于电动车辆的电气化动力系统,该电气化动力系统包括有用于驱动电动车辆向前和向后移动的行驶单元和用于执行各种作业的作业单元,该行驶单元包括有第一电动机;动力传输机构,其输入端与该第一电动机的功率输出端相连接;差速器,其输入端与该动力传输机构的输出端相连接;以及驱动车轮,其与该差速器的输出端相连接,用于驱动该电动车辆向前和向后移动,该作业单元包括有第二电动机;作业驱动系统,其输入端与该第二电动机的功率输出端相连接;以及作业设备,其与该作业驱动系统的输出端相连接,用于执行各种作业,其特征在于:According to a first aspect of the present invention, there is provided an electrified power system for an electric vehicle, the electrified power system including a traveling unit for driving the electric vehicle to move forward and backward and a work unit for performing various operations , the driving unit includes a first electric motor; a power transmission mechanism, the input end of which is connected with the power output end of the first electric motor; a differential, whose input end is connected with the output end of the power transmission mechanism; and a drive wheel , which is connected with the output end of the differential for driving the electric vehicle to move forward and backward, the working unit includes a second electric motor; the working drive system, the input end of which is connected to the power output of the second electric motor and the operation equipment, which is connected with the output end of the operation drive system and is used for performing various operations, and is characterized in that:
该电气化动力系统还包括有功率组合装置,用于将该第一电动机和该第二电动机的输出功率进行组合后提供给该动力传输机构;以及The electrified power system further includes a power combining device for combining the output powers of the first electric motor and the second electric motor to provide the power transmission mechanism; and
开关装置,分别与该第二电动机的功率输出端、该该功率组合装置的输入端和该作业驱动系统的输入端相连接,a switch device, respectively connected with the power output end of the second motor, the input end of the power combination device and the input end of the operation drive system,
其中,在行驶模式下,该开关装置处于第一工作状态以使该第二电动机的输出功率通过该开关装置仅传输至该功率组合装置而不传输给该作业驱动系统,从而来自该第一电动机和该第二电动机的输出功率通过该功率组合装置被组合,然后组合后的功率被输出给该动力传输机构,Wherein, in the driving mode, the switching device is in a first working state, so that the output power of the second electric motor is only transmitted to the power combination device through the switching device and not to the work drive system, so as to come from the first electric motor and the output power of the second motor are combined by the power combining device, and then the combined power is output to the power transmission mechanism,
其中,在作业模式下,该开关装置处于第二工作状态以使该第二电动机的输出功率仅传输给该作业驱动系统而不传输至该功率组合装置。Wherein, in the working mode, the switching device is in the second working state so that the output power of the second motor is only transmitted to the working drive system and not to the power combination device.
在一优选实施例中,该功率组合装置为一扭矩耦合装置,其中在行驶模式下,该开关装置处于第一工作状态以使该第二电动机的输出功率传输至该扭矩耦合装置,从而来自该第一电动机和第二电动机的输出功率的扭矩通过该扭矩耦合装置被耦合,然后输出给该动力传输机构。In a preferred embodiment, the power combining device is a torque coupling device, wherein in the driving mode, the switching device is in a first operating state so that the output power of the second electric motor is transmitted to the torque coupling device, thereby from the torque coupling device. Torques of output powers of the first electric motor and the second electric motor are coupled through the torque coupling device and then output to the power transmission mechanism.
在一优选实施例中,该扭矩耦合装置由第一输入轴、第一组齿轮 副、第二输入轴、第二组齿轮副以及输出轴组成,其中该第一组齿轮副由相互啮合的第一齿轮和第二齿轮组成;该第二组齿轮副由相互啮合的第二齿轮和第三齿轮组成;该第一输入轴的一端与该第一电动机的功率输出端相连,作为该扭矩耦合装置的第一扭矩输入端,另一端与该第一齿轮相连;该第二输入轴的一端与该第二电动机的功率输出端相连,作为该扭矩耦合装置的第二扭矩输入端,另一端与该第三齿轮相连;以及该输出轴的一端与该第二齿轮相连,另一端作为耦合扭矩输出端而与该动力传输机构的输入端相连,其中由该第一扭矩输入端和该第二扭矩输入端所传输的两输入扭矩与由该耦合扭矩输出端传输的输出扭矩之间的数学关系由该第一组齿轮副的传动比和该第二组齿轮副的传动比所决定。In a preferred embodiment, the torque coupling device is composed of a first input shaft, a first set of gear pairs, a second input shaft, a second set of gear pairs, and an output shaft, wherein the first set of gear pairs is composed of a first set of gear pairs that mesh with each other. A gear and a second gear are formed; the second gear pair is formed by a second gear and a third gear that mesh with each other; one end of the first input shaft is connected to the power output end of the first motor as the torque coupling device One end of the second input shaft is connected to the power output end of the second electric motor as the second torque input end of the torque coupling device, and the other end is connected to the power output end of the second motor. The third gear is connected; and one end of the output shaft is connected with the second gear, and the other end is connected with the input end of the power transmission mechanism as a coupling torque output end, wherein the first torque input end and the second torque input end are connected The mathematical relationship between the two input torques transmitted by the terminal and the output torque transmitted by the coupled torque output terminal is determined by the gear ratio of the first set of gear pairs and the gear ratio of the second set of gear pairs.
在一优选实施例中,该扭矩耦合装置与该动力传输机构设置成为一体,该扭矩耦合装置和该动力传输机构共同的输出端与该差速器的输入端相连。In a preferred embodiment, the torque coupling device is integrated with the power transmission mechanism, and the common output end of the torque coupling device and the power transmission mechanism is connected to the input end of the differential.
在一优选实施例中,该开关装置包括有第一离合器和第二离合器,该第二电动机通过该第一离合器与该功率组合装置相连接,并通过该第二离合器与该作业驱动系统相连接,其中在行驶模式下,该开关装置处于第一工作状态,该第一离合器结合且该第二离合器分离,以使该第二电动机的输出功率仅传输至该功率组合装置而不传输给该作业驱动系统,其中在作业模式下,该开关装置处于第二工作状态,该第一离合器分离且该第二离合器结合,以使该第二电动机的输出功率仅传输给该作业驱动系统而不传输至该功率组合装置。In a preferred embodiment, the switch device includes a first clutch and a second clutch, the second electric motor is connected to the power combination device through the first clutch, and is connected to the work drive system through the second clutch , wherein in the driving mode, the switch device is in the first working state, the first clutch is engaged and the second clutch is disengaged, so that the output power of the second electric motor is only transmitted to the power combination device and not to the operation. drive system, wherein in the working mode, the switch device is in a second working state, the first clutch is disengaged and the second clutch is engaged, so that the output power of the second electric motor is only transmitted to the working drive system and not transmitted to The power combination device.
在一优选实施例中,该电气化动力系统还包括有与该开关装置相连接的一控制单元,其中,在行驶模式下,该控制单元使得该开关装置处于第一工作状态;在作业模式下,该控制单元使得该开关装置处于第二工作状态。In a preferred embodiment, the electrified power system further comprises a control unit connected with the switch device, wherein, in the driving mode, the control unit makes the switch device in a first working state; in the working mode, The control unit causes the switching device to be in a second working state.
在一优选实施例中,该第二离合器为一可改变旋转方向的锥齿轮离合器。In a preferred embodiment, the second clutch is a bevel gear clutch capable of changing the direction of rotation.
在一优选实施例中,该第一电动机和第二电动机是被非同轴布置 的。In a preferred embodiment, the first motor and the second motor are non-coaxially arranged.
在一优选实施例中,该电动车辆为街道清扫车,该作业驱动系统为液压系统,该作业设备为包括抽风机和刷子等装置的清扫设备。In a preferred embodiment, the electric vehicle is a street sweeper, the working drive system is a hydraulic system, and the working equipment is a sweeping device including devices such as an exhaust fan and a brush.
根据本发明的第二方面,提供了一种电动车辆,其包括有上述的电气化动力系统。According to a second aspect of the present invention, there is provided an electric vehicle comprising the above electrified powertrain.
根据本发明的电动车辆及其包括的电气化动力系统,在该电动车辆为街道清扫车的情况下,该作业驱动设备为液压系统,该作业设备为包括抽风机和刷子等装置的清扫设备。在行车模式下,街道清扫车就像街道上的其它车辆一样行驶,该开关装置处于第一工作状态以使该第二电动机的输出功率通过该开关装置仅传输至该功率组合装置(扭矩耦合装置)而不传输给该液压系统(作业驱动系统),从而来自该第一电动机和该第二电动机的输出功率(扭矩)通过该功率组合装置(扭矩耦合装置)被组合(合并),然后组合后的功率(合并后的扭矩)被输出给该差速器,使得街道清扫车的驱动车轮通过组合后的输出功率(合并后的扭矩)而被驱动,这样街道清扫车可以较高速度向前和向后移动。According to the electric vehicle of the present invention and the electrified power system it includes, when the electric vehicle is a street sweeper, the work driving device is a hydraulic system, and the work device is a cleaning device including devices such as an exhaust fan and a brush. In the driving mode, the street sweeper drives like other vehicles on the street, the switching device is in a first working state so that the output power of the second electric motor is transmitted through the switching device only to the power combination device (torque coupling device ) is not transmitted to the hydraulic system (work drive system), so that the output power (torque) from the first electric motor and the second electric motor is combined (combined) through the power combining device (torque coupling device), and then combined The power (combined torque) is output to the differential, so that the drive wheels of the street sweeper are driven by the combined output power (combined torque), so that the street sweeper can forward and Move backwards.
在作业模式下,街道清扫车以低速行驶,同时清扫街道。该开关装置处于第二工作状态以使该第二电动机的输出功率仅传输给该液压系统(作业驱动系统)而不传输至该功率组合装置(扭矩耦合装置),第二电动机的输出功率通过该液压系统(作业驱动系统)而被提供给清扫设备(作业设备),从而驱动该清扫设备(作业设备)进行作业来清扫街道。同时,该第一电动机的输出功率通过该动力传输机构被单独提供给该驱动车轮。从而驱动街道清扫车低速向前和向后移动。In work mode, the street sweeper drives at low speed while sweeping the street. The switching device is in the second working state so that the output power of the second electric motor is only transmitted to the hydraulic system (work drive system) and not to the power combining device (torque coupling device), through which the output power of the second electric motor is transmitted A hydraulic system (work drive system) is supplied to the cleaning equipment (working equipment), and the cleaning equipment (working equipment) is driven to perform work to clean the street. Meanwhile, the output power of the first electric motor is individually supplied to the driving wheels through the power transmission mechanism. This drives the street sweeper forward and backward at low speed.
显然,根据本发明的电动车辆及其包括的电气化动力系统解决了现有技术的电动车辆中的电气化动力系统中的电动机低效使用的缺陷,有效地提高电气化动力系统中电动机的使用效率,并可以采用更小型的电动机作为第一电动机,从而降低了电气化动力系统成本且节省了空间。Obviously, the electric vehicle and the electrified power system it includes according to the present invention solve the defect of inefficient use of the electric motor in the electrified power system in the electric vehicle of the prior art, effectively improve the use efficiency of the electric motor in the electrified power system, and A smaller electric motor can be used as the first electric motor, reducing electrified powertrain cost and saving space.
本发明的其他特征和优点将在随后的说明书中阐述,并且,部分 地从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the description, claims and drawings.
附图说明Description of drawings
图1为现有技术中街道清扫车的常规燃油动力系统的结构示意图。FIG. 1 is a schematic structural diagram of a conventional fuel power system of a street sweeper in the prior art.
图2为现有技术中街道清扫车的电气化动力系统的结构示意图。FIG. 2 is a schematic structural diagram of an electrified power system of a street sweeper in the prior art.
图3(a)为说明图2所示的电气化动力系统的行驶模式的示意图。FIG. 3( a ) is a schematic diagram illustrating a running mode of the electrified powertrain shown in FIG. 2 .
图3(b)为说明图2所示的电气化动力系统的作业模式的示意图。FIG. 3( b ) is a schematic diagram illustrating an operation mode of the electrified power system shown in FIG. 2 .
图4为根据本发明一实施例的用于街道清扫车的电气化动力系统的结构示意图4 is a schematic structural diagram of an electrified power system for a street sweeper according to an embodiment of the present invention
图5(a)为说明图4所示的电气化动力系统的行驶模式的示意图。FIG. 5( a ) is a schematic diagram illustrating a running mode of the electrified powertrain shown in FIG. 4 .
图5(b)为说明图4所示的电气化动力系统的作业模式的示意图。FIG. 5( b ) is a schematic diagram illustrating an operation mode of the electrified power system shown in FIG. 4 .
附图标记:Reference number:
1:现有技术的街道清扫车的常规燃油动力系统1: Conventional fuel power system of prior art street sweeper
2:现有技术的街道清扫车的电气化动力系统2: The electrified powertrain of the prior art street sweeper
3:本发明的街道清扫车的电气化动力系统3: The electrified power system of the street sweeper of the present invention
11、21、31:行驶单元11, 21, 31: Travel unit
12、22、32:作业单元12, 22, 32: work unit
33:开关装置33: Switchgear
111:底盘发动机;111: chassis engine;
112、122、331、332:离合器;112, 122, 331, 332: clutch;
113:动力传输机构;113: power transmission mechanism;
312:动力传输机构(扭矩耦合装置);312: power transmission mechanism (torque coupling device);
114、313:差速器;114, 313: Differential;
115、314:驱动车轮115, 314: Drive Wheels
121:辅助发动机;121: auxiliary engine;
123、322:作业驱动系统;123, 322: work drive system;
124、323:清扫设备124, 323: Cleaning equipment
1241、3231:抽风机1241, 3231: Exhaust fan
1242、3232:刷子1242, 3232: brushes
211、311:第一电动机211, 311: The first motor
221、321:第二电动机221, 321: The second motor
333:锥齿轮333: Bevel gear
具体实施方式Detailed ways
下面将参照附图更详细地描述本发明的实施例。虽然附图中显示了本发明的某些实施例,然而应当理解的是,本发明可以通过各种形式来实现,而且不应该被解释为限于这里阐述的实施例,相反提供这些实施例是为了更加透彻和完整地理解本发明。换言之,本发明的附图及实施例仅用于示例性作用,并非用于限制本发明的保护范围。Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for the purpose of A more thorough and complete understanding of the present invention. In other words, the drawings and embodiments of the present invention are only used for exemplary purposes, and are not used to limit the protection scope of the present invention.
在本申请说明书全文(包括权利要求书)中所使用的“连接”一词可指任何直接或间接的连接手段。举例而言,若文中描述第一装置连接于第二装置,则应该被解释成该第一装置可以直接连接于该第二装置,或者该第一装置可以通过其他装置或某种连接手段而间接地连接至该第二装置。本申请的说明书以及权利要求书中提及的“第一”、“第二”等用语是用于命名装置的名称,或区别不同实施例或范围,或便于对应说明书及权利要求书的元件,而并非用来限制装置数量的上限或下限,亦非用来限制装置的次序。另外,凡可能之处,在附图及具体实施方式中使用相同标号的元件/构件/步骤代表相同或类似部分。不同实施例中使用相同标号或使用相同用语的元件/构件/步骤可以相互参照相关说明。As used throughout the specification of this application (including the claims), the term "connection" may refer to any direct or indirect means of connection. For example, if it is described in the text that a first device is connected to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be indirectly connected through other devices or some connection means connected to the second device. Terms such as "first" and "second" mentioned in the description and claims of the present application are used to name the device, or to distinguish different embodiments or ranges, or to facilitate corresponding elements in the description and claims, It is not used to limit the upper or lower limit of the number of devices, nor is it used to limit the order of the devices. Additionally, where possible, elements/components/steps using the same reference numbers in the drawings and the detailed description represent the same or similar parts. Elements/components/steps that use the same reference numerals or use the same terminology in different embodiments may refer to relative descriptions of each other.
图4示出了根据本发明一非限制性实施例的用于街道清扫车的 电气化动力系统3。在该实施例中,电动车辆为街道清扫车。该电气化动力系统3包括有用于推动街道清扫车向前和向后移动的行驶单元31、用于清洁街道的作业单元32和开关装置33。Figure 4 shows an electrified powertrain 3 for a street sweeper in accordance with a non-limiting embodiment of the present invention. In this embodiment, the electric vehicle is a street sweeper. The electrified power system 3 includes a traveling unit 31 for propelling the street sweeper forward and backward, a work unit 32 for cleaning the street, and a switch device 33 .
该行驶单元31包括有第一电动机311;动力传输机构312,其一输入端与该第一电动机311的功率输出端相连接,另一输入端通过该开关装置33与该第二电动机321的功率输出端相连接;差速器313,其输入端与该动力传输机构312的输出端相连接;以及驱动车轮314,其与该差速器313的输出端相连接,用于驱动该街道清扫车行驶。The driving unit 31 includes a first electric motor 311 ; a power transmission mechanism 312 , one input end of which is connected to the power output end of the first electric motor 311 , and the other input end is connected to the power of the second electric motor 321 through the switching device 33 . The output end is connected; the differential 313, the input end of which is connected with the output end of the power transmission mechanism 312; and the driving wheel 314, which is connected with the output end of the differential 313 for driving the street sweeper drive.
该作业单元32包括有第二电动机321;作为作业驱动系统的液压系统322,其输入端通过该开关装置33与该第二电动机321的功率输出端相连接;以及作为作业设备的用于清扫街道的清扫设备323,其与该液压系统322的输出端相连接,包括有抽风机3231和刷子3232。The working unit 32 includes a second electric motor 321; a hydraulic system 322 as a working drive system, the input end of which is connected to the power output end of the second electric motor 321 through the switch device 33; and a working device for cleaning streets The cleaning device 323 is connected to the output end of the hydraulic system 322, and includes an exhaust fan 3231 and a brush 3232.
该第一电动机311和该第二电动机321被非同轴布置。The first motor 311 and the second motor 321 are arranged non-coaxially.
该开关装置33包括有第一离合器331和第二离合器(332,333),其中,第二电动机321的功率输出端通过该第一离合器331与动力传输机构312的该另一输入端相连接;第二离合器(332,333)为一可改变旋转方向的锥齿轮离合器(如图所示,其由一离合器332和一锥齿轮333连接组成),第二电动机321的功率输出端通过锥齿轮离合器(332,333)与液压系统322的输入端相连接。当然,本领域的技术人员可以理解,根据不同的应用情况,该开关装置33可以采用其他适合的形式或结构。The switch device 33 includes a first clutch 331 and a second clutch (332, 333), wherein the power output end of the second electric motor 321 is connected to the other input end of the power transmission mechanism 312 through the first clutch 331; The second clutch (332, 333) is a bevel gear clutch that can change the direction of rotation (as shown in the figure, it is composed of a clutch 332 and a bevel gear 333 connected), and the power output end of the second motor 321 passes through the bevel gear clutch ( 332 , 333 ) are connected to the input end of the hydraulic system 322 . Of course, those skilled in the art can understand that the switch device 33 may adopt other suitable forms or structures according to different application situations.
该动力传输机构312为一扭矩耦合装置(即动力传输机构与扭矩耦合装置设置成为一体)而作为功率组合装置,可同时实现了传统动力传输机构的变速功能以及本发明的功率组合装置的功率组合功能。该扭矩耦合装置312包括有第一输入轴3121、第一组齿轮副(3123、3124)、第二输入轴3122、第二组齿轮副(3124、3125)以及输出轴3126组成。该第一组齿轮副由相互啮合的第一齿轮3123和第二齿轮3124组成。该第二组齿轮副由相互啮合的第二齿轮3124和第三齿轮3125组成。第一输入轴3121的一端与第一电动机311的功率输出端 相连,作为该扭矩耦合装置的第一扭矩输入端,另一端与第一齿轮3123相连。第二输入轴3122的一端与第二电动机321的功率输出端相连,作为该扭矩耦合装置的第二扭矩输入端,另一端与第三齿轮3125相连。输出轴3126的一端与第二齿轮3124相连,另一端作为耦合扭矩输出端而与差速器313的输入端相连。分别来自第一扭矩输入端的第一电动机311的输入扭矩和来自第二扭矩输入端的第二电动机321的输入扭矩通过第一组齿轮副和第二组齿轮副被进行耦合,耦合后的扭矩被输出给差速器313。其中该第一组齿轮副的传动比和该第二组齿轮副的传动比可以根据具体的应用情况而进行设定,由该第一扭矩输入端和该第二扭矩输入端所传输的两输入扭矩与由该耦合扭矩输出端传输的输出扭矩之间的数学关系由该第一组齿轮副的传动比和该第二组齿轮副的传动比所决定。The power transmission mechanism 312 is a torque coupling device (that is, the power transmission mechanism and the torque coupling device are set as one body) as a power combination device, which can simultaneously realize the speed change function of the traditional power transmission mechanism and the power combination of the power combination device of the present invention. Features. The torque coupling device 312 includes a first input shaft 3121 , a first set of gear pairs ( 3123 , 3124 ), a second input shaft 3122 , a second set of gear pairs ( 3124 , 3125 ) and an output shaft 3126 . The first set of gear pairs consists of a first gear 3123 and a second gear 3124 that mesh with each other. The second set of gear pairs consists of a second gear 3124 and a third gear 3125 that mesh with each other. One end of the first input shaft 3121 is connected to the power output end of the first electric motor 311 as the first torque input end of the torque coupling device, and the other end is connected to the first gear 3123. One end of the second input shaft 3122 is connected to the power output end of the second electric motor 321 as the second torque input end of the torque coupling device, and the other end is connected to the third gear 3125 . One end of the output shaft 3126 is connected to the second gear 3124 , and the other end is connected to the input end of the differential 313 as a coupling torque output end. The input torque of the first electric motor 311 from the first torque input end and the input torque of the second electric motor 321 from the second torque input end are respectively coupled through the first set of gear pairs and the second set of gear pairs, and the coupled torque is output. to the differential 313. The transmission ratio of the first group of gear pairs and the transmission ratio of the second group of gear pairs can be set according to specific application conditions, and the two inputs transmitted by the first torque input end and the second torque input end The mathematical relationship between the torque and the output torque transmitted by the coupled torque output is determined by the gear ratio of the first set of gear pairs and the gear ratio of the second set of gear pairs.
在图4所示的实施例中,本发明的功率组合装置为一扭矩耦合装置312,且该扭矩耦合装置312同时实现常规的动力传输机构的变速功能。然而,该实施例是非限制性的,本发明的的功率组合装置可以采用其他任何适合形式的结构和配置来实现将第一电动机的输出功率和第二电动机的输出功率进行组合以直接地或通过动力传输机构间接地传输给差速器,例如可采用转速耦合装置、扭矩及转速混合耦合装置等形式来实现。当然,根据空间设置的需要,本发明的功率组合装置可以与动力传输机构分开设置且相互连接。In the embodiment shown in FIG. 4 , the power combining device of the present invention is a torque coupling device 312 , and the torque coupling device 312 simultaneously realizes the speed change function of a conventional power transmission mechanism. However, this embodiment is non-limiting, and the power combining device of the present invention may adopt any other suitable form of structure and configuration to realize the combination of the output power of the first motor and the output power of the second motor to directly or through The power transmission mechanism is indirectly transmitted to the differential, for example, it can be realized in the form of a rotational speed coupling device, a torque and rotational speed hybrid coupling device, and the like. Of course, according to the requirement of space arrangement, the power combination device of the present invention can be arranged separately from the power transmission mechanism and connected to each other.
在图4所示的实施例中,该扭矩耦合装置312包括有两组相互连接的齿轮副。然而,该实施例是非限制性的,适用作为本发明的功率组合装置的扭矩耦合装置可根据具体应用情况而可包括有多组相互连接的齿轮副,以实现将分别来自第一扭矩输入端的第一电动机的输入扭矩和来自第二扭矩输入端的第二电动机的输入扭矩进行耦合后,输出给该差速器。In the embodiment shown in FIG. 4 , the torque coupling device 312 includes two sets of interconnected gear pairs. However, this embodiment is non-limiting, and the torque coupling device suitable for the power combining device of the present invention may include a plurality of sets of interconnected gear pairs according to specific application conditions, so as to realize the transmission of the first torque input from the first torque input end. The input torque of an electric motor and the input torque of the second electric motor from the second torque input terminal are coupled and output to the differential.
在图4所示的实施例中,该扭矩耦合装置312是通过齿轮耦合的方式来实现的,然而,该实施例是非限制性的,适用作为本发明的功率组合装置的扭矩耦合装置可通过磁场耦合、链或带耦合等多种方式 实现。In the embodiment shown in FIG. 4 , the torque coupling device 312 is realized by means of gear coupling, however, this embodiment is not limited, and the torque coupling device suitable for the power combining device of the present invention can be coupled by a magnetic field Coupling, chain or band coupling, etc.
根据本发明的另一优选实施例(未图示),该另一优选实施例与图4所示的实施例的区别仅在于:电气化动力系统3还包括有与开关装置33相连接的一控制单元,其中,在行驶模式下,该控制单元使得开关装置33处于第一工作状态(即第一离合器331处于结合状态,第二离合器(332,333)处于分离状态);在作业模式下,该控制单元使得开关装置33处于第二工作状态(即第一离合器331处于分离状态,第二离合器(332,333)处于结合状态)。本领域的技术人员显然可以容易想到实现该控制单元的各种适用结构和配置,在此不再赘言。According to another preferred embodiment (not shown) of the present invention, the difference between this preferred embodiment and the embodiment shown in FIG. 4 is only that the electrified power system 3 further includes a control device connected to the switch device 33 unit, wherein, in the driving mode, the control unit makes the switch device 33 in the first working state (ie the first clutch 331 is in the engaged state, the second clutch (332, 333) is in the disengaged state); in the working mode, the The control unit makes the switch device 33 in the second working state (ie, the first clutch 331 is in a disengaged state, and the second clutch (332, 333) is in an engaged state). It is obvious to those skilled in the art that various suitable structures and configurations for realizing the control unit can be easily conceived, which will not be repeated here.
图5(a)说明了图4所示实施例的电气化动力系统3的行驶模式。在行驶模式下,开关装置33处于第一工作状态,即第一离合器331处于结合状态,而第二离合器(332,333)处于分离状态,以使第二电动机321的输出功率通过第一离合器331传输至扭矩耦合装置(功率组合装置)312,从而来自第一电动机311和第二电动机321的输出功率的扭矩通过扭矩耦合装置312被耦合,然后,扭矩耦合后的组合功率被输出给差速器313,进而提供给驱动车轮314,这样,在行驶模式下,由于驱动车轮314被提供以扭矩耦合后的组合功率,街道清扫车可以较高速度向前和向后移动。FIG. 5( a ) illustrates the driving mode of the electrified powertrain 3 of the embodiment shown in FIG. 4 . In the running mode, the switch device 33 is in the first working state, that is, the first clutch 331 is in the engaged state, and the second clutch ( 332 , 333 ) is in the disengaged state, so that the output power of the second electric motor 321 passes through the first clutch 331 It is transmitted to the torque coupling device (power combining device) 312, so that the torque of the output power from the first electric motor 311 and the second electric motor 321 is coupled through the torque coupling device 312, and then the torque-coupled combined power is output to the differential 313, which in turn is provided to the drive wheels 314, so that, in the drive mode, the street sweeper can move forward and backward at higher speeds due to the torque-coupled combined power provided to the drive wheels 314.
图5(b)说明了图4所示实施例的电气化动力系统3的作业模式。在作业模式下,开关装置33处于第二工作状态,即第一离合器331处于分离状态,而第二离合器(332,333)处于结合状态,以使第二电动机321的输出功率无法通过第一离合器331传输至扭矩耦合装置(功率组合装置)312,而是通过第二离合器(332,333)被提供给液压系统322,进而通过液压系统322驱动清扫设备323中的刷子3231和风扇3232等进行作业来清扫街道。这样,在作业模式下,仅第一电动机311的输出功率被传输给扭矩耦合装置312,进而提供给驱动车轮314,使得街道清扫车以相对于行驶模式下较低的速度行驶。同时,第二电动机321的输出功率被提供给液压系统322,从而 驱动清扫设备323中的刷子3231和风扇3232等进行作业来清扫街道。FIG. 5( b ) illustrates the operation mode of the electrified power system 3 of the embodiment shown in FIG. 4 . In the working mode, the switch device 33 is in the second working state, that is, the first clutch 331 is in the disengaged state, and the second clutch (332, 333) is in the engaged state, so that the output power of the second electric motor 321 cannot pass through the first clutch 331 is transmitted to the torque coupling device (power combination device) 312, but is supplied to the hydraulic system 322 through the second clutch (332, 333), and then the hydraulic system 322 drives the brushes 3231 and the fan 3232 in the cleaning device 323 to work. to clean the streets. In this way, in the work mode, only the output power of the first electric motor 311 is transmitted to the torque coupling device 312 and then to the drive wheels 314, so that the street sweeper travels at a lower speed than in the drive mode. At the same time, the output power of the second electric motor 321 is supplied to the hydraulic system 322, thereby driving the brushes 3231, the fan 3232, etc. in the cleaning device 323 to perform operations to clean the street.
根据本发明的另一实施例(未图示),提供了一种街道清扫车,其包括有上述的电气化动力系统3。According to another embodiment (not shown) of the present invention, there is provided a street sweeping vehicle including the above-mentioned electrified power system 3 .
与图2所示的现有技术的电气化动力系统2相比,在根据本发明的电气化动力系统3中,第一电动机311的设计最大功率可以低得多。因此可以采用更小型的电动机作为第一电动机311,从而降低了成本并节省了空间。此外,由于采用了适当的设计和能量管理策略,图4所示的布局可以实现更高的能量效率。Compared with the prior art electrified power system 2 shown in FIG. 2 , in the electrified power system 3 according to the present invention, the designed maximum power of the first electric motor 311 can be much lower. Therefore, a smaller motor can be used as the first motor 311, thereby reducing cost and saving space. Furthermore, the layout shown in Figure 4 can achieve higher energy efficiency due to proper design and energy management strategies.
显然,根据本发明的电动车辆及其包括的电气化动力系统解决了现有技术的电气化动力系统中的电动机低效使用的缺陷,有效地提高电气化动力系统中电动机的使用效率;可以采用更小型的电动机作为第一电动机,从而降低了电气化动力系统成本并节省了安装空间。Obviously, the electric vehicle and the electrified power system it includes according to the present invention solve the defect of the inefficient use of the electric motor in the electrified power system of the prior art, and effectively improve the use efficiency of the electric motor in the electrified power system; The electric motor acts as the first electric motor, thereby reducing electrified powertrain costs and saving installation space.
以上所述实施例是针对街道清扫车描述的,显然,本发明的技术方案不仅限于用于街道清扫车,而可适用于包括行驶单元和作业单元的其他类型的电动车辆,包括但不限于各种市政车辆或建筑车辆。The above-mentioned embodiments are described for street sweepers. Obviously, the technical solutions of the present invention are not limited to street sweepers, but are applicable to other types of electric vehicles including driving units and work units, including but not limited to various electric vehicles. a municipal vehicle or a construction vehicle.
在本发明的描述中,需要说明的是,术语“上”、“下”、“左”、“右”、“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。In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
最后应说明的是:以上所述实施例,仅为本发明的具体实施方式,用以说明本发明的技术方案,而非对其限制,本发明的保护范围并不局限于此,尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:任何熟悉本技术领域的技术人员在本发明公开的技术范围内,其依然可以对前述实施例所记载的技术方案进行修改或可轻易想到变化,或者对其中部分技术特征进行等同替换;而这些修改、变化或者替换,并不使相应技术方案的本质脱离本发明实施例技术方案的精神和范围,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。Finally, it should be noted that the above-mentioned embodiments are only specific implementations of the present invention, and are used to illustrate the technical solutions of the present invention, but not to limit them. The protection scope of the present invention is not limited thereto, although referring to the foregoing The embodiment has been described in detail the present invention, those of ordinary skill in the art should understand: any person skilled in the art who is familiar with the technical field within the technical scope disclosed by the present invention can still modify the technical solutions described in the foregoing embodiments. Or can easily think of changes, or equivalently replace some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be covered in the present invention. within the scope of protection. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

  1. 一种用于电动车辆的电气化动力系统,所述电气化动力系统包括有用于驱动电动车辆向前和向后移动的行驶单元和用于执行各种作业的作业单元,所述行驶单元包括有第一电动机;动力传输机构,其输入端与所述第一电动机的功率输出端相连接;差速器,其输入端与所述动力传输机构的输出端相连接;以及驱动车轮,其与所述差速器的输出端相连接,用于驱动所述电动车辆向前和向后移动,所述作业单元包括有第二电动机;作业驱动系统,其输入端与所述第二电动机的功率输出端相连接;以及作业设备,其与所述作业驱动系统的输出端相连接,用于执行各种作业,其特征在于:An electrified power system for an electric vehicle, the electrified power system includes a travel unit for driving the electric vehicle to move forward and backward and a work unit for performing various tasks, the travel unit includes a first an electric motor; a power transmission mechanism, the input end of which is connected to the power output end of the first electric motor; a differential, the input end of which is connected to the output end of the power transmission mechanism; and a drive wheel, which is connected to the differential The output end of the speed gear is connected to drive the electric vehicle to move forward and backward, and the work unit includes a second electric motor; the work drive system, the input end of which is connected to the power output end of the second electric motor. connection; and work equipment, which is connected to the output end of the work drive system for performing various work, characterized in that:
    所述电气化动力系统还包括有功率组合装置,用于将该第一电动机和该第二电动机的输出功率进行组合后提供给该动力传输机构;以及The electrified power system further includes a power combining device for combining the output power of the first electric motor and the second electric motor to provide the power transmission mechanism; and
    开关装置,分别与所述第二电动机的功率输出端、所述功率组合装置的输入端和所述作业驱动系统的输入端相连接,a switch device, respectively connected to the power output end of the second motor, the input end of the power combination device and the input end of the operation drive system,
    其中,在行驶模式下,所述开关装置处于第一工作状态以使所述第二电动机的输出功率通过所述开关装置仅传输至所述功率组合装置而不传输给所述作业驱动系统,从而来自所述第一电动机和所述第二电动机的输出功率通过所述功率组合装置被组合,然后组合后的功率被输出给所述动力传输机构,Wherein, in the driving mode, the switching device is in a first working state, so that the output power of the second electric motor is only transmitted to the power combination device through the switching device and not to the work drive system, thereby The output powers from the first electric motor and the second electric motor are combined by the power combining device, and then the combined power is output to the power transmission mechanism,
    其中,在作业模式下,所述开关装置处于第二工作状态以使所述第二电动机的输出功率仅传输给所述作业驱动系统而不传输至所述功率组合装置。Wherein, in the working mode, the switching device is in a second working state, so that the output power of the second electric motor is only transmitted to the working drive system and not to the power combination device.
  2. 根据权利要求1所述的电气化动力系统,其中,所述功率组合装置为一扭矩耦合装置,The electrified powertrain of claim 1, wherein the power combining device is a torque coupling device,
    其中在行驶模式下,所述开关装置处于第一工作状态以使所述第二电动机的输出功率传输至所述扭矩耦合装置,从而来自所述第一电动机和第二电动机的输出功率的扭矩通过所述扭矩耦合装置被耦合, 然后输出给所述动力传输机构。wherein in the driving mode, the switching device is in a first operating state to transmit the output power of the second electric motor to the torque coupling device, so that the torque from the output power of the first electric motor and the second electric motor passes through The torque coupling device is coupled and then output to the power transmission mechanism.
  3. 据权利要求2所述的电气化动力系统,其中,所述扭矩耦合装置由第一输入轴、第一组齿轮副、第二输入轴、第二组齿轮副以及输出轴组成,The electrified power system of claim 2, wherein the torque coupling device consists of a first input shaft, a first set of gear pairs, a second input shaft, a second set of gear pairs, and an output shaft,
    其中,所述第一组齿轮副由相互啮合的第一齿轮和第二齿轮组成;Wherein, the first group of gear pairs is composed of a first gear and a second gear that mesh with each other;
    其中,所述第二组齿轮副由相互啮合的所述第二齿轮和第三齿轮组成;Wherein, the second group of gear pairs is composed of the second gear and the third gear that mesh with each other;
    其中,所述第一输入轴的一端与所述第一电动机的功率输出端相连,作为所述扭矩耦合装置的第一扭矩输入端,另一端与所述第一齿轮相连;Wherein, one end of the first input shaft is connected with the power output end of the first electric motor as the first torque input end of the torque coupling device, and the other end is connected with the first gear;
    其中,所述第二输入轴的一端与所述第二电动机的功率输出端相连,作为所述扭矩耦合装置的第二扭矩输入端,另一端与所述第三齿轮相连;以及Wherein, one end of the second input shaft is connected with the power output end of the second electric motor as the second torque input end of the torque coupling device, and the other end is connected with the third gear; and
    其中,所述输出轴的一端与所述第二齿轮相连,另一端作为耦合扭矩输出端而与所述动力传输机构的输入端相连。Wherein, one end of the output shaft is connected with the second gear, and the other end is connected with the input end of the power transmission mechanism as a coupling torque output end.
  4. 根据权利要求2或3所述的电气化动力系统,其中,所述扭矩耦合装置与所述动力传输机构设置为一体,所述扭矩耦合装置和所述动力传输机构共同的输出端与所述差速器的输入端相连。The electrified power system according to claim 2 or 3, wherein the torque coupling device is integrated with the power transmission mechanism, and a common output end of the torque coupling device and the power transmission mechanism is connected to the differential connected to the input of the device.
  5. 根据权利要求1-3中任一项所述的电气化动力系统,其中,所述开关装置包括有第一离合器和第二离合器,所述第二电动机的功率输出端通过所述第一离合器与所述功率组合装置相连接,并通过所述第二离合器与所述作业驱动系统相连接,The electrified power system according to any one of claims 1-3, wherein the switch device includes a first clutch and a second clutch, and the power output end of the second electric motor is connected with the first clutch through the first clutch. the power combination device is connected to the work drive system through the second clutch,
    其中在行驶模式下,所述开关装置处于第一工作状态,所述第一离合器结合且所述第二离合器分离,以使所述第二电动机的输出功率仅传输至所述功率组合装置而不传输给所述作业驱动系统,In the driving mode, the switch device is in a first working state, the first clutch is engaged and the second clutch is disengaged, so that the output power of the second electric motor is only transmitted to the power combination device without transmitted to the work drive system,
    其中在作业模式下,所述开关装置处于第二工作状态,所述第一离合器分离且所述第二离合器结合,以使所述第二电动机的输出功率 仅传输给所述作业驱动系统而不传输至所述功率组合装置。Wherein in the working mode, the switch device is in the second working state, the first clutch is disengaged and the second clutch is engaged, so that the output power of the second electric motor is only transmitted to the working drive system without to the power combining device.
  6. 根据权利要求1-3中任一项所述的电气化动力系统,其中,所述电气化动力系统还包括有与所述开关装置相连接的一控制单元,其中,在行驶模式下,所述控制单元使得所述开关装置处于第一工作状态;在作业模式下,所述控制单元使得所述开关装置处于第二工作状态。The electrified power system according to any one of claims 1-3, wherein the electrified power system further comprises a control unit connected to the switching device, wherein, in a driving mode, the control unit The switching device is in a first working state; in the working mode, the control unit makes the switching device in a second working state.
  7. 根据权利要求5所述的电气化动力系统,其中,所述第二离合器为可改变旋转方向的锥齿轮离合器。The electrified power system of claim 5, wherein the second clutch is a bevel gear clutch that can change the direction of rotation.
  8. 根据权利要求1-3中任一项所述的电气化动力系统,其中,所述第一电动机和第二电动机是被非同轴布置的。3. The electrified power system of any of claims 1-3, wherein the first and second electric motors are non-coaxially arranged.
  9. 根据权利要求1-3中任一项所述的电气化动力系统,其中,所述电动车辆为街道清扫车,所述作业驱动系统为液压系统,所述作业设备为包括抽风机和刷子等装置的清扫设备。The electrified power system according to any one of claims 1-3, wherein the electric vehicle is a street sweeper, the work drive system is a hydraulic system, and the work equipment is a device including an exhaust fan, a brush, and the like. Clean equipment.
  10. 一种电动车辆,其包括有根据权利要求1至9中任一项所述的电气化动力系统。An electric vehicle comprising an electrified powertrain according to any one of claims 1 to 9.
PCT/CN2020/119272 2020-09-30 2020-09-30 Electric vehicle and electric power system comprising same WO2022067632A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002002319A (en) * 2000-06-16 2002-01-09 Tcm Corp Vehicle for slow speed running work
CN204749861U (en) * 2015-05-18 2015-11-11 山东理工大学 Two separation and reunion formula bi -polars output special -purpose vehicle operation motor transmission
CN110126603A (en) * 2018-02-08 2019-08-16 郑州宇通客车股份有限公司 A kind of pure electric vehicle sanitation cart dynamical system and sanitation cart
CN110861489A (en) * 2018-08-27 2020-03-06 郑州宇通客车股份有限公司 Power system of electric sanitation vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002002319A (en) * 2000-06-16 2002-01-09 Tcm Corp Vehicle for slow speed running work
CN204749861U (en) * 2015-05-18 2015-11-11 山东理工大学 Two separation and reunion formula bi -polars output special -purpose vehicle operation motor transmission
CN110126603A (en) * 2018-02-08 2019-08-16 郑州宇通客车股份有限公司 A kind of pure electric vehicle sanitation cart dynamical system and sanitation cart
CN110861489A (en) * 2018-08-27 2020-03-06 郑州宇通客车股份有限公司 Power system of electric sanitation vehicle

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