CN113511065B - Electro-hydraulic coupling cooperative driving system and driving method for electric vehicle - Google Patents

Electro-hydraulic coupling cooperative driving system and driving method for electric vehicle Download PDF

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Publication number
CN113511065B
CN113511065B CN202110782648.9A CN202110782648A CN113511065B CN 113511065 B CN113511065 B CN 113511065B CN 202110782648 A CN202110782648 A CN 202110782648A CN 113511065 B CN113511065 B CN 113511065B
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motor
hydraulic
energy
electric
power
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CN113511065A (en
Inventor
李琳
张铁柱
鲁力群
孙宾宾
冯超
孟令菊
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Shandong University of Technology
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Shandong University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Motor Power Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to an electrohydraulic coupling cooperative driving system and a driving method for a vehicle. In the system, a multiport power coupler is connected with the inverter; the multiport power coupler distributes the received electric power to a main driving motor, a control motor and electric equipment; the controller is respectively in signal transmission with the power battery, the control motor, the multiport electric power coupler, the second clutch and the brake; the main driving motor is connected with the gear ring through an input shaft; the second clutch is connected with the mechanical transmission module through an output shaft; the reduction gear is connected with the planet carrier and is connected with the hydraulic module through a first clutch; the planet carrier is connected with the brake; the sun gear is coaxially connected with the control motor; the input shaft is connected with the gear ring; the output shaft is connected with the input shaft through a second clutch; after the power of the control motor and the power of the input shaft are coupled at the gear ring, the mechanical power is output to the mechanical transmission module by the output shaft. The invention effectively improves the energy utilization rate and the economical efficiency of the vehicle.

Description

Electro-hydraulic coupling cooperative driving system and driving method for electric vehicle
Technical Field
The invention relates to the field of new energy automobile power systems, in particular to an electro-hydraulic coupling cooperative driving system and a driving method for a vehicle.
Background
In recent years, the problems of energy shortage and atmospheric environmental pollution caused by the traditional automobiles using petroleum energy as power are increasingly severe, so that the development of energy-saving and environment-friendly new energy automobiles is a trend, and pure electric automobiles become the main stream of research.
Currently, pure electric vehicles are widely applied to the fields of commercial vehicles and passenger vehicles, but are not yet implemented in the field of engineering machinery vehicles. Because the energy saving and emission reduction forms of engineering machinery products are more severe, pure electrodynamic technology in the field of engineering machinery is the main stream of research in the recent years.
In both passenger cars and construction machine vehicles, there are problems with energy transfer efficiency and power distribution. In existing vehicles, the separation of mechanical, electrical and hydraulic energy is mostly distributed after the energy source by a transfer case. The speed ratio of the transfer case is fixed, and the speed ratio cannot be adjusted, so that the output ratio of mechanical energy, electric energy and hydraulic energy cannot be changed, and the speed ratio can be adjusted only through a rear gearbox or a hydraulic torque converter or a variable pump according to load demands, particularly in engineering machinery, the hydraulic torque converter has extremely low efficiency under heavy load working conditions, and needs to consume a large amount of energy, so that vehicle emission and oil consumption exceed the standard, and therefore, the length of a transmission chain is increased, the energy utilization rate is reduced, and proper power distribution cannot be matched according to the load demands.
Therefore, a new electro-hydraulic coupling cooperative driving system or method for a vehicle is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide an electrohydraulic coupling cooperative driving system and a driving method for a vehicle and a motor vehicle, which effectively improve the energy utilization rate and the vehicle economy.
In order to achieve the above object, the present invention provides the following solutions:
An electro-hydraulic coupling cooperative driving system of a vehicle, comprising: the power device comprises a power battery, an inverter, a multiport electric power coupler, a controller, a main driving motor, a power coupling module, a brake, a reduction gear, a first clutch, a hydraulic module, a mechanical transmission module and electric equipment;
The power coupling module includes: the device comprises an input shaft, a gear ring, a planet wheel, a planet carrier, an output shaft, a control motor, a sun wheel and a second clutch;
the power battery is connected with the inverter through electric transmission;
The multiport electric power coupler is connected with the inverter through electric transmission and receives electric power;
the multiport electric power coupler is used for distributing received electric power to the main driving motor, the control motor and the electric equipment;
The controller is in signal transmission with the power battery, the control motor, the multiport electric power coupler, the second clutch and the brake respectively;
the main driving motor is connected with the gear ring through the input shaft;
The second clutch is connected with the mechanical transmission module through the output shaft and outputs power to the mechanical transmission module;
The reduction gear is connected with the planet carrier and is connected with the hydraulic module through the first clutch; the planet carrier is connected with the brake;
the sun gear is coaxially connected with the control motor; the input shaft is connected with the gear ring;
the output shaft is connected with the input shaft through the second clutch;
And after the power of the control motor and the power of the input shaft are coupled at the gear ring, mechanical power is output to the mechanical transmission module by the output shaft.
Optionally, the hydraulic module includes: the hydraulic pump/motor, the main control valve, the overflow valve, the one-way valve, the hydraulic cylinder, the hydraulic oil tank and the accumulator;
the hydraulic pump/motor is respectively connected with the reduction gear and the main control valve;
The main control valve is sequentially connected with the overflow valve, the one-way valve and the hydraulic cylinder;
the main control valve is also connected with the energy accumulator, and the overflow valve is connected with the hydraulic oil tank in sequence.
Optionally, the mechanical transmission module includes: a driving wheel, a speed reducing and shifting mechanism;
the speed reducing and changing mechanism is respectively connected with the output shaft and the driving wheel.
Optionally, the speed reduction and change mechanism includes: a speed reducer and a gearbox;
The gearbox is connected with the output shaft; the gearbox is connected with the speed reducer; the speed reducer is connected with the driving wheel.
Optionally, the electric device includes: accessory module, lighting module and whistle module.
Optionally, the transmission line includes: mechanical transmission, electric transmission, hydraulic transmission and signal transmission.
The electro-hydraulic coupling cooperative driving method for the electric-hydraulic coupling cooperative driving system of the electric vehicle is used for realizing the electro-hydraulic coupling cooperative driving system of the electric vehicle, and comprises the following steps:
Determining the working state of the electric vehicle;
when the electric vehicle does not need to output hydraulic power externally, judging the load of the electric vehicle in a vehicle driving mode;
If the load is smaller than the load threshold, the electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor and supplies electric equipment respectively;
If the load is not smaller than the load threshold, the electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor, the control motor and the electric equipment respectively; when the energy accumulator is released outwards without energy, the controller controls the first clutch to be disconnected, the brake is separated, the second clutch is connected, the controller enables the control motor to work in a motor state to drive the sun gear to rotate, power is coupled with torque transmitted by the control motor, the sun gear, the planet gear and the gear ring through the input shaft and the clutch at the clutch, and is transmitted to the driving wheel through the output shaft, the gearbox and the speed reducer to jointly drive the vehicle; when the energy accumulator has extra hydraulic energy to release outwards, the controller controls the brake to be disconnected, the first clutch to be connected and the control motor to be not operated, at the moment, the hydraulic energy in the energy accumulator is converted into mechanical energy after passing through the main control valve and the hydraulic pump/motor, and the mechanical energy is transmitted to the second clutch through the reduction gear and the planet carrier, the planet wheel and the gear ring and is coupled with power transmitted by the main drive motor at the second clutch, and is transmitted to the driving wheel through the output shaft to jointly drive the vehicle;
When the electric vehicle performs in-situ operation without a transmission system, and only in an operation mode, electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor, the driving control motor and the electric equipment respectively;
The controller controls the second clutch to be disconnected and the brake to be disconnected, the motor is controlled to work in a motor mode, the output shaft does not output power outwards, the power is controlled by the motor to control the rotating speed and torque of the sun wheel through the gear ring, the planet wheel and the planet carrier, the power transmitted by the sun wheel and the planet carrier and the input shaft is coupled, and the hydraulic pump/motor is driven to rotate through the reduction gear and the first clutch after the coupling, so that mechanical energy is converted into hydraulic energy, the hydraulic cylinder is pushed to act through the main control valve, and meanwhile, energy can be stored through the energy accumulator;
When the hydraulic energy in the hydraulic accumulator meets the working requirement of the hydraulic cylinder, the power battery does not work at the moment, the first clutch is in a disconnected state, and the accumulator independently supplies power for the hydraulic cylinder;
When the electric vehicle needs to be driven and operated at the same time, the controller judges the driving power and the operating power according to the load demand, and controls the output power proportion of two branches of the hydraulic module and the mechanical transmission module by controlling the rotating speed of the motor; the electric energy in the power battery passes through the inverter and the multiport electric power coupler and respectively drives the main driving motor, the driving control motor and the electric equipment;
The controller controls the second clutch to be combined, the brake to be separated, the motor to work in a motor mode, and the driving route of the vehicle is as follows: the main driving motor passes through the gear ring and the second clutch, and then is subjected to power coupling at the second clutch through the control motor, the sun gear, the planet gear and the gear ring, and then is output to the output shaft, the gearbox and the speed reducer until reaching the driving wheel; the operation route is as follows: the power of the main drive motor, the gear ring, the planet gear, the control motor, the sun gear and the planet gear are coupled at the planet carrier, and after the coupling, the reduction gear passes through the second clutch and the hydraulic pump/motor and drives the hydraulic cylinder to work through the main control valve;
Judging a specific operation mode when the electric vehicle is in a braking and decompression mode;
If the operation mode of the electric vehicle is the operation device decompression mode, the main drive motor does not work, the brake is separated, the first clutch is combined, the hydraulic energy in the hydraulic cylinder passes through the hydraulic pump/motor through the pipeline, at the moment, the hydraulic pump/motor is used as a motor, and the operation route is as follows: the speed reducing gear, the planet carrier, the sun gear and the control motor are used for controlling the motor to work in a generator state at the moment, and the transmitted mechanical energy is converted into electric energy to be stored in the power battery; meanwhile, the energy accumulator can absorb the hydraulic energy in the pressure reducing process through the main control valve, and the hydraulic energy is directly stored in the energy accumulator;
If the operation mode of the electric vehicle is a braking or decelerating mode, the main driving motor does not work, the clutch is connected with the output shaft, the braking force at the driving wheel passes through the speed reducer, the gearbox and the second clutch and reaches the control motor through the gear ring, the planet wheel and the sun wheel, and at the moment, the control motor is used as a generator to convert the transmitted mechanical energy into electric energy to be stored in the power battery;
If the operation mode of the electric vehicle is a mode that an operation device and braking are simultaneously carried out, the main drive motor and the control motor work in a generator state, a part of hydraulic energy passes through the main control valve through the energy accumulator, absorbs the hydraulic energy in the decompression process, and directly stores the hydraulic energy in the energy accumulator; the other part of hydraulic energy passes through the hydraulic pump/motor, the reduction gear and the planet carrier, and then is converted into electric energy through the sun gear, the control motor, the gear ring and the main driving motor, and is stored in the power battery; the braking energy of the vehicle is subjected to power coupling at the gear ring through a speed reducer, a gearbox and a second clutch, and then the mechanical energy is converted into electric energy to be stored in a power battery;
When the load of the transmission part or the load of the hydraulic part of the electric vehicle fluctuates, the load of the hydraulic module, the mechanical transmission module or the electric equipment is respectively compensated and reduced by adjusting the output rotating speed and the torque of the control motor.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
According to the electro-hydraulic coupling cooperative driving system and the driving method for the electric vehicle, provided by the invention, the hydraulic system and the vehicle transmission system are subjected to power coupling, so that power is coupled and distributed at the energy output end, the length of a transmission chain is reduced, and the energy transmission efficiency is improved; the working state of the main driving motor and the output proportion of mechanical and hydraulic power are controlled by the control motor, so that the electro-hydraulic cooperative coupling driving of the electric vehicle is realized; the main drive motor and the hydraulic pump/motor are ensured to work stably in a high-efficiency area, and the capacity of overcoming a certain load can be greatly improved; in the braking deceleration process of the vehicle or the depressurization process of the hydraulic system, the braking energy of various loads can be effectively recycled and used as auxiliary power in driving; the mechanical energy, the electric energy and the hydraulic energy are reasonably distributed, recovered and converted in the system, and the energy utilization rate and the vehicle economy are effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electro-hydraulic coupling cooperative driving system for a vehicle;
Fig. 2 is a schematic diagram of a power coupling module according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an electrohydraulic coupling cooperative driving system and a driving method for a vehicle and a motor vehicle, which effectively improve the energy utilization rate and the vehicle economy.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Fig. 1 is a schematic structural diagram of an electrohydraulic coupling cooperative driving system of a vehicle. As shown in fig. 1, the electro-hydraulic coupling cooperative driving system for a vehicle of the present invention includes: the power battery 1, the inverter 2, the multiport electric power coupler 3, the controller 4, the main driving motor 5, the power coupling module 6, the brake 7, the reduction gear 8, the first clutch 9, the hydraulic module, the mechanical transmission module and the electric equipment 20.
As shown in fig. 2, the power coupling module 6 includes: an input shaft 601, a ring gear 602, planet gears 603, a planet carrier 604, an output shaft 605, a control motor 606, a sun gear 607, and a second clutch 608.
The power battery 1 is connected with the inverter 2 through electric transmission.
The multiport electric power coupler 3 is connected with the inverter 2 through electric power transmission and receives electric power.
The multiport electric power coupler 3 is used for distributing the received electric power to the main drive motor 5, the control motor 606 and the consumer 20.
The controller 4 is in signal communication with the power battery 1, the control motor 606, the multiport electric power coupler 3, the second clutch 608, and the brake 7, respectively.
The main drive motor 5 is connected to the ring gear 602 via the input shaft 601.
The second clutch 608 is connected to the mechanical transmission module through the output shaft 605 and outputs power to the mechanical transmission module.
The reduction gear 8 is connected to the planet carrier 604 and to the hydraulic module via the first clutch 9; the carrier 604 is connected to the brake 7.
The sun gear 607 is coaxially connected to the control motor 606; the input shaft 601 is connected to the ring gear 602.
The output shaft 605 is connected to the input shaft 601 via the second clutch 608.
After the power of the control motor 606 and the input shaft 601 is coupled at the gear ring 602, mechanical power is output to the mechanical transmission module by the output shaft 605.
The power coupling module comprises a single-row planetary gear mechanism, namely, the electric-hydraulic coupling cooperative driving system of the electric vehicle is provided by combining the existing pure electric vehicle technology and applying the planetary power coupling technology and the motor control technology. The invention couples the power of the hydraulic module and the mechanical transmission module of the vehicle, so that the power is coupled and distributed at the energy output end, the length of a transmission chain is reduced, and the energy transmission efficiency is improved. The working state of the main drive motor 5 and the output proportion of mechanical and hydraulic power are controlled by the control motor 606, so that the electro-hydraulic cooperative coupling driving of the electric vehicle is realized; ensuring that the main drive motor 5 and the hydraulic pump/motor 10 work stably in a high-efficiency area; in the braking deceleration process of the vehicle or the depressurization process of the hydraulic system, the braking energy of various loads can be effectively recycled and used as auxiliary power in driving; the mechanical energy, the electric energy and the hydraulic energy are reasonably distributed, recovered and converted in the system, and the energy utilization rate and the vehicle economy are effectively improved.
The hydraulic module includes: a hydraulic pump/motor 10, a main control valve 11, an overflow valve 12, a check valve 13, a hydraulic cylinder 14, a hydraulic oil tank 15, and an accumulator 16;
the hydraulic pump/motor 10 is connected to the reduction gear 8 and the main control valve 11, respectively;
the main control valve 11 is sequentially connected with the overflow valve 12, the check valve 13 and the hydraulic cylinder 14;
the main control valve 11 is also connected in turn to an accumulator 16, the relief valve 12 and the hydraulic tank 15.
The mechanical transmission module comprises: a drive wheel 17, a speed reduction and shift mechanism;
the reduction gear mechanism is connected to the output shaft 605 and the drive wheel 17, respectively.
The speed reduction and change mechanism includes: a speed reducer 18 and a gearbox 19;
the gearbox 19 is connected with the output shaft 605; the gearbox is connected with the speed reducer 18; the decelerator 18 is connected to the driving wheel 17.
The powered device 20 includes: accessory module, lighting module and whistle module.
As shown in fig. 1, the transmission line includes: mechanical transmission, electric transmission, hydraulic transmission and signal transmission.
The invention provides a vehicle electro-hydraulic coupling cooperative driving method for realizing the vehicle electro-hydraulic coupling cooperative driving system, which comprises the following steps:
Determining the working state of the electric vehicle;
When the electric vehicle does not need to output hydraulic power outwards, judging the load of the electric vehicle in a vehicle driving mode (namely a pure driving mode);
if the load is smaller than the load threshold, the electric energy in the power battery 1 is supplied to the load through the inverter 2 and the multiport electric power coupler 3 in two paths, one path drives the main driving motor 5, and the other path is supplied to the electric equipment 20;
If the load is not smaller than the load threshold, the electric energy in the power battery 1 is supplied to the load through the inverter 2 and the multiport electric power coupler 3, and the electric energy is supplied to the electric equipment 20 through three paths, namely, the electric energy is supplied to the electric equipment through one path of driving motor 5 and one path of driving motor 606; when the energy accumulator 16 is released externally, the controller 4 controls the first clutch 9 to be disconnected, the brake 7 is separated, the second clutch 608 is engaged, the controller 4 enables the control motor 606 to work in a motor state to drive the sun gear 607 to rotate, power passes through the gear ring 602 and the clutch by the input shaft 601, torque transmitted by the control motor 606, the sun gear 607, the planet gear 603 and the gear ring 602 is coupled at the clutch, and is transmitted to the driving wheel 17 through the output shaft 605, the gearbox and the speed reducer 18 to jointly drive the vehicle; when the energy accumulator 16 has extra hydraulic energy released to the outside, the controller 4 controls the brake 7 to be disconnected, the first clutch 9 to be connected and the control motor 606 to be not operated, at this time, the hydraulic energy in the energy accumulator 16 is converted into mechanical energy after passing through the main control valve 11 and the hydraulic pump/motor 10, and is transmitted to the second clutch 608 through the reduction gear 8, the planet carrier 604, the planet gear 603 and the gear ring 602, and is coupled with the power transmitted by the main drive motor 5 at the second clutch 608, and is transmitted to the driving wheel 17 through the output shaft 605 to jointly drive the vehicle;
When the electric vehicle performs in-situ operation, a transmission system is not needed, and only in an operation mode (namely a pure operation mode), electric energy in the power battery 1 is divided into three paths to be supplied to loads through the inverter 2 and the multi-port electric power coupler 3, one path to drive the main driving motor 5, one path to drive the control motor 606, and one path to be supplied to the electric equipment 20;
The controller 4 controls the second clutch 608 to be disconnected and the brake 7 to be disconnected, the motor 606 is controlled to work in a motor mode, the output shaft 605 does not output power outwards, the power is coupled with the power transmitted by the input shaft 601 through the gear ring 602, the planet gears 603 and the planet carrier 604 by the input shaft 601, the power is coupled with the power transmitted by the input shaft 601 through the planet gears 603 and the planet carrier 604, the hydraulic pump/motor 10 is driven to rotate through the reduction gear 8 and the first clutch 9 after the coupling, the mechanical energy is converted into hydraulic energy, the hydraulic cylinder 14 is pushed to act through the main control valve 11, and meanwhile, the energy can be stored through the energy accumulator 16;
When the hydraulic energy in the hydraulic accumulator 16 meets the working requirement of the hydraulic cylinder 14, the power battery 1 does not work at the moment, the first clutch 9 is in a disconnected state, and the accumulator 16 independently supplies power for the hydraulic cylinder 14;
When the electric vehicle needs to be driven and operated (i.e. in a hybrid mode), the controller 4 judges the driving power and the operating power according to the load demand, and controls the output power proportion of two branches of the hydraulic module and the mechanical transmission module by controlling the rotating speed of the motor 606; the electric energy in the power battery 1 is divided into three paths to be supplied to loads through the inverter 2 and the multiport electric power coupler 3, one path to drive the main driving motor 5, one path to drive the control motor 606 and one path to be supplied to the electric equipment 20;
The controller 4 controls the second clutch 608 to be combined, the brake 7 to be separated, and controls the motor 606 to work in a motor mode, and the running driving route of the electric vehicle is as follows: the main driving motor 5 is subjected to power coupling through a gear ring 602, a second clutch 608, a control motor 606, a sun gear 607, a planet gear 603 and the gear ring 602, and then is output to an output shaft 605, a gearbox 19 and a speed reducer 18 until reaching a driving wheel 17; the operation route is as follows: the main driving motor 5, the gear ring 602, the planet gears 603, the control motor 606, the sun gear 607 and the planet gears 603 are coupled at the planet carrier 604, and after the coupling, the reduction gear 8 passes through the second clutch 608, the hydraulic pump/motor 10 and drives the hydraulic cylinder 14 to work through the main control valve 11;
Judging a specific operation mode when the electric vehicle is in a braking and decompression mode;
If the operation mode of the electric vehicle is the operation device decompression mode, the main driving motor 5 does not work, the brake 7 is separated, the first clutch 9 is combined, the hydraulic energy in the hydraulic cylinder 14 passes through the hydraulic pump/motor 10 through the pipeline, at this time, the hydraulic pump/motor 10 is used as a motor, and the operation route is as follows: the speed reducing gear 8, the planet carrier 604, the sun gear 607 and the control motor 606, wherein the control motor 606 works in a generator state at the moment and converts the transmitted mechanical energy into electric energy to be stored in the power battery 1; meanwhile, the energy accumulator 16 can absorb the hydraulic energy in the decompression process through the main control valve 11, and the hydraulic energy is directly stored in the energy accumulator 16;
If the operation mode of the electric vehicle is a braking or decelerating mode, the main driving motor 5 does not work, the clutch is engaged with the output shaft 605, the braking force at the driving wheel 17 passes through the speed reducer 18, the gear box 19 and the second clutch 608 and reaches the control motor 606 through the gear ring 602, the planet wheel 603 and the sun wheel 607, and at the moment, the control motor 606 serves as a generator to convert the transferred mechanical energy into electric energy to be stored in the power battery 1;
If the operation mode of the electric vehicle is the operation device and brake simultaneous operation mode, the main driving motor 5 and the control motor 606 operate in a generator state, a part of hydraulic energy passes through the main control valve 11 through the accumulator 16, absorbs the hydraulic energy in the decompression process, and directly stores the hydraulic energy in the accumulator 16; the other part of hydraulic energy passes through the hydraulic pump/motor 10, the reduction gear 8 and the planet carrier 604, and then is converted into electric energy through the sun gear 607, the control motor 606, the gear ring 602 and the main driving motor 5, and is stored in the power battery 1; the braking energy of the vehicle is subjected to power coupling at the gear ring 602 through the speed reducer 18, the gearbox 19 and the second clutch 608, and then the mechanical energy is converted into electric energy to be stored in the power battery 1;
when the load of the transmission part or the load of the hydraulic part of the electric vehicle fluctuates, the output rotation speed and torque of the control motor 606 are adjusted to compensate and reduce the load of the hydraulic module, the mechanical transmission module or the electric equipment 20 respectively. The main driving motor 5 is always operated in a high-efficiency area, and the service life of the main driving motor 5 is prolonged.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (6)

1. An electro-hydraulic coupling cooperative driving system for a vehicle, comprising: the power device comprises a power battery, an inverter, a multiport electric power coupler, a controller, a main driving motor, a power coupling module, a brake, a reduction gear, a first clutch, a hydraulic module, a mechanical transmission module and electric equipment;
The power coupling module includes: the device comprises an input shaft, a gear ring, a planet wheel, a planet carrier, an output shaft, a control motor, a sun wheel and a second clutch;
the power battery is connected with the inverter through electric transmission;
The multiport electric power coupler is connected with the inverter through electric transmission and receives electric power;
the multiport electric power coupler is used for distributing received electric power to the main driving motor, the control motor and the electric equipment;
The controller is in signal transmission with the power battery, the control motor, the multiport electric power coupler, the second clutch and the brake respectively;
the main driving motor is connected with the gear ring through the input shaft;
The second clutch is connected with the mechanical transmission module through the output shaft and outputs power to the mechanical transmission module;
The reduction gear is connected with the planet carrier and is connected with the hydraulic module through the first clutch; the planet carrier is connected with the brake;
the sun gear is coaxially connected with the control motor; the input shaft is connected with the gear ring;
the output shaft is connected with the input shaft through the second clutch;
after the power of the control motor and the power of the input shaft are coupled at the gear ring, mechanical power is output to the mechanical transmission module by the output shaft;
Judging a specific operation mode when the electric vehicle is in a braking and decompression mode;
If the operation mode of the electric vehicle is the operation device decompression mode, the main drive motor does not work, the brake is separated, the first clutch is combined, the hydraulic energy in the hydraulic cylinder passes through the hydraulic pump/motor through the pipeline, at the moment, the hydraulic pump/motor is used as a motor, and the operation route is as follows: the speed reducing gear, the planet carrier, the sun gear and the control motor are used for controlling the motor to work in a generator state at the moment, and the transmitted mechanical energy is converted into electric energy to be stored in the power battery; meanwhile, the energy accumulator can absorb the hydraulic energy in the pressure reducing process through the main control valve, and the hydraulic energy is directly stored in the energy accumulator;
If the operation mode of the electric vehicle is a braking or decelerating mode, the main driving motor does not work, the clutch is connected with the output shaft, the braking force at the driving wheel passes through the speed reducer, the gearbox and the second clutch and reaches the control motor through the gear ring, the planet wheel and the sun wheel, and at the moment, the control motor is used as a generator to convert the transmitted mechanical energy into electric energy to be stored in the power battery;
If the operation mode of the electric vehicle is a mode that an operation device and braking are simultaneously carried out, the main drive motor and the control motor work in a generator state, a part of hydraulic energy passes through the main control valve through the energy accumulator, absorbs the hydraulic energy in the decompression process, and directly stores the hydraulic energy in the energy accumulator; the other part of hydraulic energy passes through the hydraulic pump/motor, the reduction gear and the planet carrier, and then is converted into electric energy through the sun gear, the control motor, the gear ring and the main driving motor, and is stored in the power battery; the braking energy of the vehicle is subjected to power coupling at the gear ring through a speed reducer, a gearbox and a second clutch, and then the mechanical energy is converted into electric energy to be stored in a power battery;
When the load of the transmission part or the load of the hydraulic part of the electric vehicle fluctuates, the load of the hydraulic module, the mechanical transmission module or the electric equipment is respectively compensated and reduced by adjusting the output rotating speed and the torque of the control motor;
the hydraulic module includes: the hydraulic pump/motor, the main control valve, the overflow valve, the one-way valve, the hydraulic cylinder, the hydraulic oil tank and the accumulator;
the hydraulic pump/motor is respectively connected with the reduction gear and the main control valve;
The main control valve is sequentially connected with the overflow valve, the one-way valve and the hydraulic cylinder;
the main control valve is also connected with the energy accumulator, and the overflow valve is connected with the hydraulic oil tank in sequence.
2. The electric-hydraulic coupling co-drive system of an electric-vehicle-on-board of claim 1, wherein the mechanical transmission module comprises: a driving wheel, a speed reducing and shifting mechanism;
the speed reducing and changing mechanism is respectively connected with the output shaft and the driving wheel.
3. The electric-hydraulic coupling cooperative driving system of a vehicle according to claim 2, wherein the speed reducing and changing mechanism comprises: a speed reducer and a gearbox;
The gearbox is connected with the output shaft; the gearbox is connected with the speed reducer; the speed reducer is connected with the driving wheel.
4. The electric-hydraulic coupling cooperative driving system of a vehicle according to claim 1, wherein the electric equipment comprises: accessory module, lighting module and whistle module.
5. The electric-hydraulic coupling co-drive system of a vehicle of claim 1, wherein the transmission line comprises: mechanical transmission, electric transmission, hydraulic transmission and signal transmission.
6. An electro-hydraulic coupling cooperative driving method for a vehicle, for implementing an electro-hydraulic coupling cooperative driving system for a vehicle according to any one of claims 1 to 5, characterized in that the electro-hydraulic coupling cooperative driving method for a vehicle comprises:
Determining the working state of the electric vehicle;
when the electric vehicle does not need to output hydraulic power externally, judging the load of the electric vehicle in a vehicle driving mode;
If the load is smaller than the load threshold, the electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor and supplies electric equipment respectively;
If the load is not smaller than the load threshold, the electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor, the control motor and the electric equipment respectively; when the energy accumulator is released outwards without energy, the controller controls the first clutch to be disconnected, the brake is separated, the second clutch is connected, the controller enables the control motor to work in a motor state to drive the sun gear to rotate, power is coupled with torque transmitted by the control motor, the sun gear, the planet gear and the gear ring through the input shaft and the clutch at the clutch, and is transmitted to the driving wheel through the output shaft, the gearbox and the speed reducer to jointly drive the vehicle; when the energy accumulator has extra hydraulic energy to release outwards, the controller controls the brake to be disconnected, the first clutch to be connected and the control motor to be not operated, at the moment, the hydraulic energy in the energy accumulator is converted into mechanical energy after passing through the main control valve and the hydraulic pump/motor, and the mechanical energy is transmitted to the second clutch through the reduction gear and the planet carrier, the planet wheel and the gear ring and is coupled with power transmitted by the main drive motor at the second clutch, and is transmitted to the driving wheel through the output shaft to jointly drive the vehicle;
When the electric vehicle performs in-situ operation without a transmission system, and only in an operation mode, electric energy in the power battery passes through the inverter and the multiport electric power coupler and drives the main driving motor, the driving control motor and the electric equipment respectively;
The controller controls the second clutch to be disconnected and the brake to be disconnected, the motor is controlled to work in a motor mode, the output shaft does not output power outwards, the power passes through the gear ring, the planet gears and the planet carrier from the input shaft, the motor is controlled to control the rotation speed and the torque of the sun gear, the planet carrier of the planet gear is coupled with the power transmitted by the input shaft, the hydraulic pump/motor is driven to rotate through the reduction gear and the first clutch after the coupling, mechanical energy is converted into hydraulic energy, the hydraulic cylinder is pushed to act through the main control valve, and meanwhile, energy storage can be carried out through the energy accumulator;
When the hydraulic energy in the hydraulic accumulator meets the working requirement of the hydraulic cylinder, the power battery does not work at the moment, the first clutch is in a disconnected state, and the accumulator independently supplies power for the hydraulic cylinder;
When the electric vehicle needs to be driven and operated at the same time, the controller judges the driving power and the operating power according to the load demand, and controls the output power proportion of two branches of the hydraulic module and the mechanical transmission module by controlling the rotating speed of the motor; the electric energy in the power battery passes through the inverter and the multiport electric power coupler and respectively drives the main driving motor, the driving control motor and the electric equipment;
The controller controls the second clutch to be combined, the brake to be separated, the motor to work in a motor mode, and the driving route of the vehicle is as follows: the main driving motor passes through the gear ring and the second clutch, and then is subjected to power coupling at the second clutch through the control motor, the sun gear, the planet gear and the gear ring, and then is output to the output shaft, the gearbox and the speed reducer until reaching the driving wheel; the operation route is as follows: the power of the main drive motor, the gear ring, the planet gear, the control motor, the sun gear and the planet gear are coupled at the planet carrier, and after the coupling, the reduction gear passes through the second clutch and the hydraulic pump/motor and drives the hydraulic cylinder to work through the main control valve;
Judging a specific operation mode when the electric vehicle is in a braking and decompression mode;
If the operation mode of the electric vehicle is the operation device decompression mode, the main drive motor does not work, the brake is separated, the first clutch is combined, the hydraulic energy in the hydraulic cylinder passes through the hydraulic pump/motor through the pipeline, at the moment, the hydraulic pump/motor is used as a motor, and the operation route is as follows: the speed reducing gear, the planet carrier, the sun gear and the control motor are used for controlling the motor to work in a generator state at the moment, and the transmitted mechanical energy is converted into electric energy to be stored in the power battery; meanwhile, the energy accumulator can absorb the hydraulic energy in the pressure reducing process through the main control valve, and the hydraulic energy is directly stored in the energy accumulator;
If the operation mode of the electric vehicle is a braking or decelerating mode, the main driving motor does not work, the clutch is connected with the output shaft, the braking force at the driving wheel passes through the speed reducer, the gearbox and the second clutch and reaches the control motor through the gear ring, the planet wheel and the sun wheel, and at the moment, the control motor is used as a generator to convert the transmitted mechanical energy into electric energy to be stored in the power battery;
If the operation mode of the electric vehicle is a mode that an operation device and braking are simultaneously carried out, the main drive motor and the control motor work in a generator state, a part of hydraulic energy passes through the main control valve through the energy accumulator, absorbs the hydraulic energy in the decompression process, and directly stores the hydraulic energy in the energy accumulator; the other part of hydraulic energy passes through the hydraulic pump/motor, the reduction gear and the planet carrier, and then is converted into electric energy through the sun gear, the control motor, the gear ring and the main driving motor, and is stored in the power battery; the braking energy of the vehicle is subjected to power coupling at the gear ring through a speed reducer, a gearbox and a second clutch, and then the mechanical energy is converted into electric energy to be stored in a power battery;
When the load of the transmission part or the load of the hydraulic part of the electric vehicle fluctuates, the load of the hydraulic module, the mechanical transmission module or the electric equipment is respectively compensated and reduced by adjusting the output rotating speed and the torque of the control motor.
CN202110782648.9A 2021-07-12 2021-07-12 Electro-hydraulic coupling cooperative driving system and driving method for electric vehicle Active CN113511065B (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2554157A1 (en) * 1975-12-02 1977-06-16 Helling Juergen Dr Ing Regenerative braking vehicle hybrid transmission - has surplus energy stored in flywheel and coupled to drive by reduction gearing
US4588040A (en) * 1983-12-22 1986-05-13 Albright Jr Harold D Hybrid power system for driving a motor vehicle
CN101844519A (en) * 2010-05-31 2010-09-29 邹政耀 Novel vehicle weak-medium degree hybrid power synthetic system
CN103738154A (en) * 2014-01-07 2014-04-23 天津工程机械研究院 Oil electrohydraulic four-wheel drive hybrid power system and control method thereof
JP2015093588A (en) * 2013-11-13 2015-05-18 ユニキャリア株式会社 Hybrid type drive device of work vehicle
CN108128212A (en) * 2017-12-15 2018-06-08 重庆大学 A kind of hydraulic pressure auxiliary drive/braking system used for electric vehicle and its control method
CN109572681A (en) * 2019-01-22 2019-04-05 吉林大学 A kind of vehicle drive system and its control method based on the coupling of tandem two-way hydraulic power stream
CN109764027A (en) * 2017-11-09 2019-05-17 丹佛斯动力***有限责任两合公司 Electro-hydraulic pressure working truck with energy recovery function
CN110654248A (en) * 2019-10-16 2020-01-07 山东理工大学 Flywheel auxiliary power system
CN112078385A (en) * 2020-08-21 2020-12-15 江苏理工学院 Electric automobile electromechanical flywheel hybrid power system and energy recovery control method thereof
CN112519586A (en) * 2020-12-21 2021-03-19 山东理工大学 Braking energy coupling system of urban public transport

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2554157A1 (en) * 1975-12-02 1977-06-16 Helling Juergen Dr Ing Regenerative braking vehicle hybrid transmission - has surplus energy stored in flywheel and coupled to drive by reduction gearing
US4588040A (en) * 1983-12-22 1986-05-13 Albright Jr Harold D Hybrid power system for driving a motor vehicle
CN101844519A (en) * 2010-05-31 2010-09-29 邹政耀 Novel vehicle weak-medium degree hybrid power synthetic system
JP2015093588A (en) * 2013-11-13 2015-05-18 ユニキャリア株式会社 Hybrid type drive device of work vehicle
CN103738154A (en) * 2014-01-07 2014-04-23 天津工程机械研究院 Oil electrohydraulic four-wheel drive hybrid power system and control method thereof
CN109764027A (en) * 2017-11-09 2019-05-17 丹佛斯动力***有限责任两合公司 Electro-hydraulic pressure working truck with energy recovery function
CN108128212A (en) * 2017-12-15 2018-06-08 重庆大学 A kind of hydraulic pressure auxiliary drive/braking system used for electric vehicle and its control method
CN109572681A (en) * 2019-01-22 2019-04-05 吉林大学 A kind of vehicle drive system and its control method based on the coupling of tandem two-way hydraulic power stream
CN110654248A (en) * 2019-10-16 2020-01-07 山东理工大学 Flywheel auxiliary power system
CN112078385A (en) * 2020-08-21 2020-12-15 江苏理工学院 Electric automobile electromechanical flywheel hybrid power system and energy recovery control method thereof
CN112519586A (en) * 2020-12-21 2021-03-19 山东理工大学 Braking energy coupling system of urban public transport

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