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CN113276658B - A two-speed dual-motor planetary gear power split drive system - Google Patents

A two-speed dual-motor planetary gear power split drive system Download PDF

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Publication number
CN113276658B
CN113276658B CN202110760347.6A CN202110760347A CN113276658B CN 113276658 B CN113276658 B CN 113276658B CN 202110760347 A CN202110760347 A CN 202110760347A CN 113276658 B CN113276658 B CN 113276658B
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China
Prior art keywords
gear
output shaft
motor
output
power
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CN202110760347.6A
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Chinese (zh)
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CN113276658A (en
Inventor
王珑
王树荣
石黎阳
唐师法
支峰
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Wuxi Mingheng Hybrid Power Technology Co ltd
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Wuxi Mingheng Hybrid Power Technology Co ltd
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Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

本发明涉及车辆控制技术领域，具体是一种两挡双电机行星排功率分流驱动系统，包括第一电动机、第二电动机和发动机，所述第一电动机与所述发动机通过功率分流装置连接，所述功率分流装置的齿圈输出轴通过换挡装置分别与所述第二电动机或输出轴连接；所述第二电动机与平行轴减速装置连接，经两级减速增扭后通过所述输出轴输出；所述第一电动机、所述第二电动机、所述发动机和所述换挡装置分别受所述控制装置连接与控制。本系统提升了该驱动装置低速工况的输出扭矩和车辆动力性，消除了换挡过程的动力中断，降低了纯电动工况传动系空转损耗，提升了传动效率，降低了后桥速比需求，可匹配更高效、轻量化的小速比后桥。

The present invention relates to the field of vehicle control technology, specifically a two-speed dual-motor planetary gear power split drive system, comprising a first motor, a second motor and an engine, wherein the first motor is connected to the engine through a power split device, and the ring gear output shaft of the power split device is respectively connected to the second motor or the output shaft through a shifting device; the second motor is connected to a parallel shaft reduction device, and is output through the output shaft after two-stage reduction and torque increase; the first motor, the second motor, the engine and the shifting device are respectively connected and controlled by the control device. This system improves the output torque of the drive device under low-speed conditions and the vehicle's dynamics, eliminates power interruption during the shifting process, reduces idling losses of the pure electric transmission system, improves transmission efficiency, reduces rear axle speed ratio requirements, and can match a more efficient and lightweight small speed ratio rear axle.

Description

Two keep off double motor planet row power reposition of redundant personnel actuating system
Technical Field
The invention relates to the technical field of vehicle control, in particular to a two-gear double-motor planetary gear power split driving system.
Background
The power split technology of the double-motor planetary gear train couples the engine and the power of the generator through the power split planetary gear train, and can realize continuous adjustment of output rotating speed, namely stepless speed change. When the vehicle runs at low speed, the engine can be driven only, so that the exhaust emission of the engine running at low speed is reduced, and the engine is prevented from working at a low-efficiency point. And when the vehicle speed is medium, the working speed interval of the engine is optimized by using the generator, the output torque of the engine is compensated or partially recovered by using the generator and the driving motor, and the high-efficiency working interval of the engine is fully utilized. Therefore, the double-motor planet row power splitting technology is increasingly widely applied.
However, when the traditional double-motor planetary gear power distribution scheme is applied to a large-sized passenger car or a commercial vehicle, due to the distribution effect of a generator, the torque output by the power distribution planetary gear is always smaller than the torque output by an engine, so that the torque requirement of working conditions such as heavy load, low-speed climbing of the whole vehicle and the like can be met, only a larger driving motor can be selected or a two-gear speed reducer is configured for the driving motor, but the scheme needs to be matched with a driving motor controller with larger capacity, a power transmission cable or additionally added with a gear pair, a needle bearing and the like, the cost of the driving device can be obviously increased, and the marketization is not facilitated.
Therefore, a technique is urgently required to solve the problem.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a two-gear double-motor planetary gear power split driving system, which can realize two fixed speed ratio gears of engine power output under the condition of not additionally adding a gear pair by arranging a set of gear shifting mechanism on an output shaft of a power split device and can realize powerless interrupt gear shifting by matching with a driving motor. The dynamic performance of the low-speed climbing working condition of the vehicle can be greatly improved during low-speed gear, and the use requirement of a commercial vehicle is met.
The above purpose is realized by the following technical scheme:
The two-gear double-motor planetary gear power split driving system comprises a first motor, a second motor and an engine, wherein the first motor is connected with the engine through a power split device, a gear ring output shaft of the power split device is respectively connected with the second motor or the output shaft through a gear shifting device, the second motor is connected with a parallel shaft speed reducing device, and is output through the output shaft after two-stage speed reduction and torque increase, and the first motor, the second motor, the engine and the gear shifting device are respectively connected and controlled by a control device.
Further, the power splitting device comprises a sun gear, a planet carrier assembly, input rotating speed signal teeth and the gear ring output shaft, the first motor is fixedly connected with the sun gear, and the input rotating speed signal teeth are integrated on the gear ring output shaft.
Further, the planetary frame assembly further comprises a torsional damper, wherein the engine is fixedly connected with the input end of the torsional damper, and the output end of the torsional damper is fixedly connected with the planetary frame assembly.
The parallel shaft speed reducing device comprises a first-stage driving gear, a middle shaft and an output shaft, wherein the middle shaft is integrated with a first-stage driven gear and a second-stage driving gear, the output shaft is integrated with a second-stage driven gear and output rotating speed signal teeth, the second motor is fixedly connected with the first-stage driving gear, the first-stage driving gear is connected with the gear shifting device, the first-stage driving gear can be meshed with the first-stage driven gear for transmission, and the second-stage driving gear can be meshed with the second-stage driven gear for transmission.
The gear shifting device comprises a gear hub, a gear sleeve, a shifting fork, a first-gear combining tooth and a second-gear combining tooth, wherein the gear hub is fixedly connected with an output shaft of the gear ring, the first-gear combining tooth is fixedly connected with the primary driving gear, and the second-gear combining tooth is fixedly connected with the output shaft;
Further, the tooth sleeve comprises three stations of a left position, a middle position and a right position;
In the left position, the tooth sleeve is simultaneously meshed with the gear hub and the first-gear combining teeth;
In the middle position, the tooth sleeve is only meshed with the tooth hub;
And in the right position, the tooth sleeve is simultaneously meshed with the gear hub and the second-gear combining teeth.
Further, the control device comprises a mixed controller, a gear shifting executing mechanism, an input rotating speed sensor and an output rotating speed sensor, wherein the mixed controller receives an input rotating speed signal through the input rotating speed sensor and receives an output rotating speed signal through the output rotating speed sensor, and the gear shifting controller can receive an instruction sent by the mixed controller and control the gear shifting executing mechanism to drive the gear shifting device to work correspondingly according to the instruction so as to adjust a driving mode.
Further, the shift controller may be integrated within the hybrid controller, which may be in bi-directional communication with the shift controller.
Further, the gear shifting controller and the gear shifting executing mechanism can be in bidirectional communication, the input rotating speed sensor is in unidirectional communication with the hybrid controller, and the output rotating speed sensor is in unidirectional communication with the hybrid controller.
Further, the drive modes include an electric-only drive mode, an engine-alone drive mode, and a hybrid drive mode.
Advantageous effects
According to the two-gear double-motor planetary gear power split driving system, the engine, the first motor, the second motor and the gear shifting device are coordinated and controlled through the control device, so that the driving device has a pure electric driving mode, a hybrid power driving mode and an engine independent driving mode, and the two fixed speed ratio gear and neutral gear functions of engine power output can be achieved. The system improves the output torque and the vehicle dynamic performance of the low-speed working condition of the driving device, eliminates the power interruption in the gear shifting process, reduces the idle loss of the pure electric working condition transmission system, improves the transmission efficiency, reduces the speed ratio requirement of the rear axle, and can be matched with a more efficient and light-weight small-speed-ratio rear axle.
Drawings
FIG. 1 is a schematic diagram of a two-gear double-motor planetary power split driving system according to the present invention;
FIG. 2 is a schematic diagram of a control device of a two-gear double-motor planetary power split driving system according to the present invention;
FIG. 3 is a schematic diagram of a power splitting device of a two-gear double-motor planetary gear power splitting driving system according to the present invention;
FIG. 4 is a schematic diagram of a gear shifting device of a two-gear double-motor planetary power split driving system according to the present invention;
FIG. 5 is a schematic diagram of a parallel shaft reduction gear of a two-gear double-motor planetary power split driving system according to the present invention;
FIG. 6 is a schematic diagram of a power transmission path of a power split driving system of a planetary gear set with two gears in a pure electric driving mode according to the present invention;
FIG. 7 is a schematic diagram of a power transmission path in the 1 st gear in the engine independent driving mode of the two-gear dual-motor planetary power split driving system according to the present invention;
FIG. 8 is a schematic diagram of a power transmission path of a 2-gear power transmission in an engine independent driving mode of the two-gear double-motor planetary power split driving system according to the present invention;
FIG. 9 is a schematic diagram of a power transmission path of a1 st gear in a hybrid driving mode of the two-gear double-motor planetary power split driving system according to the present invention;
fig. 10 is a schematic diagram of a power transmission path of a 2-gear power transmission in a hybrid driving mode of the two-gear double-motor planetary gear power split driving system.
The graphic indicia:
1-control, 101-hybrid controller, 102-shift controller, 103-shift actuator, 104-input speed sensor, 105-output speed sensor, 2-torsional damper, 3-engine, 4-first electric motor (EM 1), 5-power split device, 501-carrier assembly, 502-sun gear, 503-ring gear output shaft, 504-input speed signal tooth, 6-second electric motor (EM 2), 7-parallel shaft reduction, 701-primary drive gear, 702-primary driven gear, 703-countershaft, 704-secondary drive gear, 705-secondary driven gear, 706-output speed signal tooth, 707-output shaft, 8-shift device, 801-shift fork, 802-first gear coupling tooth, 803-gear hub, 804-gear sleeve, 805-second gear coupling tooth.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. The described embodiments are only some, but not all, embodiments of the application. In describing embodiments of the present application, unless explicitly stated and limited otherwise, the terms "fixedly connected," "coupled," and "integrated" are to be construed broadly, e.g., as welded connections, or as intermediaries such as splines. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances. The embodiments of the application may be implemented or realized in any number of ways, including as a matter of course, such that the apparatus or elements recited in the claims are not necessarily oriented or configured to operate in any particular manner. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1, the two-gear double-motor planetary gear power split driving system comprises a first motor 4 (EM 1 in the figure), a second motor 6 (EM 2 in the figure) and an engine 3, wherein the first motor 4 is connected with the engine 3 through a power split device 5, a gear ring output shaft 503 of the power split device 5 is respectively connected with the second motor 6 or an output shaft 707 through a gear shifting device 8, the second motor 6 is connected with a parallel shaft speed reducer 7, and is output through the output shaft 707 after two-stage speed reduction and torque increase, and the first motor 4, the second motor 6, the engine 3 and the gear shifting device 8 are respectively connected and controlled by the control device 1.
As shown in fig. 3, as an optimization of the power split device 5 in the present embodiment, the power split device 5 includes a sun gear 502, a planet carrier assembly member 501, input rotation speed signal teeth 504, and the ring gear output shaft 503, where the first electric motor 4 is fixed to the sun gear 502, and the input rotation speed signal teeth 504 are integrated with the ring gear output shaft 503.
The engine 3 is fixedly connected with the input end of the torsional vibration damper 2, and the output end of the torsional vibration damper 2 is fixedly connected with the planet carrier assembly member 501.
As shown in fig. 5, as an optimization of the parallel shaft reduction gear 7 in the present embodiment, the parallel shaft reduction gear 7 includes a primary driving gear 701, an intermediate shaft 703 and the output shaft 707, wherein the intermediate shaft 703 is integrated with a primary driven gear 702 and a secondary driving gear 704, the output shaft 707 is integrated with a secondary driven gear 705 and output rotation speed signal teeth 706, the second motor 6 is fixedly connected with the primary driving gear 701, the primary driving gear 701 is connected with the gear shifting device 8, the primary driving gear 701 can be meshed with the primary driven gear 702 for transmission, and the secondary driving gear 704 can be meshed with the secondary driven gear 705 for transmission.
As shown in fig. 4, as an optimization of the gear shifting device 8 in this embodiment, the gear shifting device 8 includes a gear hub 803, a gear sleeve 804, a shifting fork 801, a first gear combining tooth 802 and a second gear combining tooth 805, wherein the gear hub 803 is fixedly connected with the gear ring output shaft 503, the first gear combining tooth 802 is fixedly connected with the primary driving gear 701, and the second gear combining tooth 805 is fixedly connected with the output shaft 707;
specifically, the tooth socket 804 includes three stations, namely a left station, a middle station and a right station;
In the left position, the tooth sleeve 804 can simultaneously engage with the tooth hub 803 and the first gear engaging tooth 802;
in the neutral position, the tooth sleeve 804 can only engage the tooth hub 803;
in the right position, the tooth sleeve 804 can simultaneously engage with the tooth hub 803 and the secondary engagement tooth 805.
As shown in fig. 2, as an optimization of the control device 1 in this embodiment, the control device 1 includes a hybrid controller 101, a gear shift controller 102, a gear shift executing mechanism 103, an input rotation speed sensor 104 and an output rotation speed sensor 105, where the hybrid controller 101 receives an input rotation speed signal through the input rotation speed sensor 104 and receives an output rotation speed signal through the output rotation speed sensor 105, and the gear shift controller 102 may receive an instruction sent by the hybrid controller 101 and control the gear shift executing mechanism 103 to drive the gear shift device 8 to perform corresponding operation according to the instruction so as to adjust a driving mode.
As an optimization of this embodiment, the shift controller 102 may be integrated into the hybrid controller 101, where the hybrid controller 101 and the shift controller 102 may perform bidirectional communication, the shift controller 102 and the shift actuator 103 may perform bidirectional communication, the input rotation speed sensor 104 may perform unidirectional communication to the hybrid controller 101, and the output rotation speed sensor 105 may perform unidirectional communication to the hybrid controller 101.
When the hybrid controller 101 detects that the vehicle running state triggers a gear shifting point, the hybrid controller 101 controls the first motor 4 to reduce the torque of a gear ring output shaft 503 in the power splitting device 5, a gear shifting instruction is sent to the gear shifting controller 102, the gear shifting controller 102 controls the gear shifting executing mechanism 103 to drive a shifting fork 801 of the gear shifting device 8 to axially move after receiving the gear shifting instruction, the gear sleeve 804 is pushed to the middle position, gear shifting is realized, and a gear shifting success signal is sent to the hybrid controller 101;
After receiving the gear-shifting success signal, the hybrid controller 101 controls the first motor 4 to quickly regulate the speed until the rotation speed difference between the gear ring output shaft 503 in the power splitting device 5 and the target combined gear is smaller than a critical value, and the hybrid controller 101 controls the first motor 4 to reduce the torque of the gear ring output shaft 503 in the power splitting device 5 and sends a gear-shifting instruction to the gear shifting controller 102;
After receiving the gear shifting instruction, the gear shifting controller 102 controls the gear shifting executing mechanism 103 to drive the shifting fork 801 of the gear shifting device 8 to axially move so as to realize gear shifting, and sends a gear shifting success signal to the hybrid controller 101, and after receiving the gear shifting success signal, the hybrid controller 101 controls the first motor 4 to enable the gear ring output shaft 503 in the power splitting device 5 to output torque.
The input rotation speed sensor 104 and the output rotation speed sensor 105 are matched with the input rotation speed signal tooth 504 and the output rotation speed signal tooth 706 to detect the rotation speed difference between the output shaft 503 of the gear ring of the power splitting device and the target combination tooth in the gear shifting process and assist the hybrid controller 101 in performing rotation speed comparison to determine whether the engaged gear is in place.
In this embodiment, the driving modes include a pure electric driving mode, an engine independent driving mode, and a hybrid driving mode, and specifically include:
(1) The pure electric drive mode driving force transmission path is as follows:
As shown in fig. 6, the sleeve 804 of the gear shifting device 8 is in the neutral position, and the ring gear output shaft 503 of the power split device 5 is disconnected from the output shaft 707. The power output by the second motor 6 is transmitted to a first driven gear 702 on an intermediate shaft 703 through a first driving gear 701, is transmitted to a second driving gear 704 through the intermediate shaft 703, and drives a second driven gear 705 on an output shaft 707 to run through the second driving gear 704, and then the power is output through the output shaft 707 to drive the vehicle.
(2) The engine individual drive mode 1 st gear drive force transmission path is as follows:
As shown in fig. 7, the gear sleeve 804 of the gear shifting device 8 is in the left position, and the ring gear output shaft 503 of the power splitting device 5 is connected to the primary driving gear 701 through the gear hub 803, the gear sleeve 804 and the first gear engaging gear 802, at this time, the second electric motor 6 does not output torque, and only energy recovery is performed when the vehicle is detected to coast or brake. The power output by the engine 3 is transmitted to the gear ring output shaft 503 through the planet carrier assembly member 501 in the power split device 5, and is transmitted to the output shaft 707 through the gear hub 803, the gear sleeve 804, the first gear combination gear 802, the primary driving gear 701 and the intermediate shaft 703, and then the power is output through the output shaft 707 to drive the vehicle. The first electric motor 4 adjusts the rotational speed of the ring gear output shaft 503 of the power split device 5 to meet the vehicle speed demand.
(3) The engine individual drive mode 2-speed drive force transmission path is as follows:
As shown in fig. 8, the gear sleeve 804 of the gear shifting device 8 is in the right position, and the ring gear output shaft 503 of the power splitting device 5 is connected to the output shaft 707 through the gear hub 803, the gear sleeve 804 and the second gear engaging teeth 805. At this time, the second electric motor 6 does not output torque, and energy recovery is performed only when the vehicle is detected to coast or brake. The power output by the engine 3 is transmitted to the gear ring output shaft 503 through the planet carrier assembly member 501 in the power split device 5, is transmitted to the output shaft 707 through the gear hub 803, the gear sleeve 804 and the second gear combining teeth 805, and then is output through the output shaft 707 to drive the vehicle. The first electric motor 4 adjusts the rotational speed of the ring gear output shaft 503 of the power split device 5 to meet the vehicle speed demand.
(4) The hybrid drive mode 1 st gear drive force transmission path is as follows:
As shown in FIG. 9, the gear sleeve 804 of the gear shifting device 8 is positioned at the left position, the gear ring output shaft 503 of the power splitting device 5 is connected with the primary driving gear 701 through the gear hub (03, the gear sleeve 804 and the first-gear combining gear 802. The power output by the engine 3 is transmitted to the gear ring output shaft 503 through the planet carrier assembly 501 of the power splitting device 5, is transmitted to the primary driving gear 701 through the gear hub 803, the gear sleeve 804 and the first-gear combining gear 802, is coupled with the power output by the second motor 6, is transmitted to the output shaft 707 through the intermediate shaft 703, and is further output to drive the vehicle to run through the output shaft 707. The first motor 4 adjusts the rotation speed of the gear ring output shaft 503 of the power splitting device 5 to meet the vehicle speed requirement.
(5) The hybrid drive mode 2-speed drive force transmission path is as follows:
As shown in fig. 10, the gear sleeve 804 of the gear shifting device 8 is in the right position, and the ring gear output shaft 503 of the power splitting device 5 is connected to the output shaft 707 through the gear hub 803, the gear sleeve 804 and the second gear engaging teeth 805. The power output by the second motor 6 is transmitted to a first driven gear 702 on an intermediate shaft 703 through a first driving gear 701, transmitted to a second driving gear 704 through the intermediate shaft 703, and drives a second driven gear 705 on an output shaft 707 to operate through the second driving gear 704. The power output by the engine 3 is transmitted to the gear ring output shaft 503 through the planet carrier assembly 501 in the power splitting device 5, is transmitted to the output shaft 707 through the gear hub 803, the gear sleeve 804 and the second gear combining teeth 805, and is coupled with the power output by the second motor 6 to output power to drive the vehicle to run. The first electric motor 4 adjusts the rotational speed of the ring gear output shaft 503 of the power split device 5 to meet the vehicle speed demand.
Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the foregoing embodiments may be modified or some and all of the technical features may be equivalently replaced, and that the modifications and substitutions do not depart from the spirit of the embodiments of the present application.

Claims (5)

1. The power split driving system for the two-gear double-motor planetary gear train is characterized by comprising a first motor, a second motor and an engine, wherein the first motor is connected with the engine through a power split device, a gear ring output shaft of the power split device is connected with the second motor or the output shaft through a gear shifting device;
The power splitting device comprises a sun gear, a planet carrier assembly, input rotation speed signal teeth and a gear ring output shaft, wherein the first motor is fixedly connected with the sun gear;
The parallel shaft speed reducing device comprises a primary driving gear, a middle shaft and an output shaft, wherein a primary driven gear and a secondary driving gear are integrated on the middle shaft, and a secondary driven gear and output rotating speed signal teeth are integrated on the output shaft;
the gear shifting device comprises a gear hub, a gear sleeve, a shifting fork, a first-gear combining tooth and a second-gear combining tooth, wherein the gear hub is fixedly connected with an output shaft of the gear ring, the first-gear combining tooth is fixedly connected with the primary driving gear, and the second-gear combining tooth is fixedly connected with the output shaft;
the tooth sleeve comprises three stations of a left position, a middle position and a right position;
In the left position, the tooth sleeve is simultaneously meshed with the gear hub and the first-gear combining teeth;
In the middle position, the tooth sleeve is only meshed with the tooth hub;
when in the right position, the tooth sleeve is meshed with the tooth hub and the second-gear combining tooth at the same time;
The driving mode includes:
(1) The power output by the second motor is transmitted to the primary driven gear on the intermediate shaft through the primary driving gear, is transmitted to the secondary driving gear through the intermediate shaft, and drives the secondary driven gear on the output shaft to operate through the secondary driving gear, so that the power output by the output shaft drives a vehicle to run;
(2) The engine single driving mode 1-gear driving force transmission; the gear sleeve is positioned at the left position in the gear shifting device, the gear ring output shaft in the power splitting device is connected with the primary driving gear through the gear hub, the gear sleeve and the first-gear combining teeth, and at the moment, the second motor does not output torque and only energy recovery is carried out when the vehicle is detected to slide or brake; the power output by the engine is transmitted to the gear ring output shaft through the planet carrier assembly in the power splitting device, and is transmitted to the output shaft through the gear hub, the gear sleeve, the first-gear combined gear, the primary driving gear and the intermediate shaft, and then the power output by the output shaft drives the vehicle to run;
(3) The engine alone drive mode 2-speed drive force transmission; the gear sleeve is positioned at the right position in the gear shifting device, the gear ring output shaft in the power splitting device is connected with the output shaft through the gear hub, the gear sleeve and the second-gear combined tooth, the second motor does not output torque at the moment, only energy recovery is carried out when the vehicle is detected to slide or brake, power output by the engine is transmitted to the gear ring output shaft through the planet carrier component in the power splitting device and is transmitted to the output shaft through the gear hub, the gear sleeve and the second-gear combined tooth, and then the power is output by the output shaft to drive the vehicle to run, and the first motor is used for adjusting the rotating speed of the gear ring output shaft in the power splitting device so as to meet the vehicle speed requirement;
(4) The power output by the engine is transmitted to the gear ring output shaft through the planet carrier component in the power splitting device, is transmitted to the primary driving gear through the gear hub, the gear sleeve and the first-gear combining tooth, is coupled with the power output by the second motor, is transmitted to the output shaft through the intermediate shaft, and further drives a vehicle to run through the output shaft output power;
(5) Hybrid drive mode 2 gear drive force transmission; the gear sleeve is positioned at the right position in the gear shifting device, the gear ring output shaft in the power splitting device is connected with the output shaft through the gear hub, the gear sleeve and the second-gear combining teeth, power output by the second motor is transmitted to the first-stage driven gear on the intermediate shaft through the first-stage driving gear and is transmitted to the second-stage driving gear through the intermediate shaft, the second-stage driven gear on the output shaft is driven to operate through the second-stage driving gear, power output by the engine is transmitted to the gear ring output shaft through the planet carrier assembly in the power splitting device and is transmitted to the output shaft through the gear hub, the gear sleeve and the second-gear combining teeth, and then power output is coupled with power output by the second motor to drive a vehicle to run, and the first motor adjusts the rotating speed of the gear ring output shaft in the power splitting device to meet the vehicle speed requirement.
2. The two-speed dual-motor planetary power split drive system of claim 1, further comprising a torsional damper, wherein the engine is fixedly coupled to an input of the torsional damper, and wherein an output of the torsional damper is fixedly coupled to the planet carrier assembly.
3. The two-gear double-motor planetary gear power split driving system according to claim 1, wherein the control device comprises a hybrid controller, a gear shifting executing mechanism, an input rotating speed sensor and an output rotating speed sensor, the hybrid controller receives an input rotating speed signal through the input rotating speed sensor and receives an output rotating speed signal through the output rotating speed sensor, and the gear shifting controller can receive an instruction sent by the hybrid controller and control the gear shifting executing mechanism to drive the gear shifting device to work correspondingly according to the instruction so as to adjust a driving mode.
4. A two-speed, two-motor planetary power split drive system as claimed in claim 3, wherein said shift controller is integrated into said hybrid controller, said hybrid controller being in bi-directional communication with said shift controller.
5. The two-gear double-motor planetary gear power split driving system according to claim 3, wherein the gear shifting controller and the gear shifting executing mechanism can be in bidirectional communication, the input rotation speed sensor is in unidirectional communication with the hybrid controller, and the output rotation speed sensor is in unidirectional communication with the hybrid controller.
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