CN114670621A - Driving system and driving method for hybrid power concrete mixer - Google Patents

Driving system and driving method for hybrid power concrete mixer Download PDF

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Publication number
CN114670621A
CN114670621A CN202210243449.5A CN202210243449A CN114670621A CN 114670621 A CN114670621 A CN 114670621A CN 202210243449 A CN202210243449 A CN 202210243449A CN 114670621 A CN114670621 A CN 114670621A
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China
Prior art keywords
driving
motor
engine
driving motor
vehicle
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CN202210243449.5A
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Chinese (zh)
Inventor
郭晓勐
马继颖
宋莉
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China National Heavy Duty Truck Group Jinan Power Co Ltd
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China National Heavy Duty Truck Group Jinan Power Co Ltd
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Priority to CN202210243449.5A priority Critical patent/CN114670621A/en
Publication of CN114670621A publication Critical patent/CN114670621A/en
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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
    • B60K25/00—Auxiliary drives
    • B60K25/06—Auxiliary drives from the transmission power take-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/421—Drives
    • 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • 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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—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 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel 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
    • 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
    • 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
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention provides a driving system and a driving method of a series-parallel hybrid power concrete mixer truck, which comprises the following steps: the system comprises an engine, a clutch, a transmission, a drive axle, a drive motor controller, a high-voltage distribution box, an upper motor controller, an upper motor, an upper system and a power battery; the engine is connected with the transmission through the clutch; a transmission output shaft of the transmission is connected with the drive axle; a transmission power take-off interface of the transmission is connected with a driving motor; the driving motor is electrically connected with the power battery through the driving motor controller and the high-voltage distribution box in sequence; the high-voltage distribution box is electrically connected with the upper mounting system through the upper mounting motor controller and the upper mounting motor; the invention realizes the functions of starting and stopping the engine, sliding, recovering braking energy, adjusting the working area of the engine, assisting the driving of the motor and the like, thereby improving the dynamic property of the vehicle, improving the economical efficiency of the vehicle and improving the smoothness of the vehicle when the engine starts and stops.

Description

Driving system and driving method for hybrid power concrete mixer
Technical Field
The invention relates to the technical field of hybrid electric vehicle driving, in particular to a driving system and a driving method of a hybrid electric concrete mixer truck.
Background
Concrete mixing trucks are specialized trucks used to transport concrete for construction. Cylindrical mixing drums are arranged on concrete mixing transport trucks to carry mixed concrete. The mixing drum can be kept to rotate all the time in the transportation process so as to ensure that the carried concrete can not be solidified.
The power system of the traditional concrete mixer truck is characterized in that an engine provides driving force for the truck through a transmission system, and the driving force is provided for a mixing tank through an engine power take-off interface and an upper hydraulic system, so that the engine is required to be in a running state when the mixing tank rotates, and the rotating speed of the mixing tank is higher when the truck runs at a high speed, and further the energy consumption of the truck is high and the economy is poor.
Disclosure of Invention
The invention aims to solve the technical problems of high vehicle energy consumption, poor economy and incapability of realizing decoupling of an engine and a stirring tank caused by the power system configuration of the traditional concrete stirring vehicle.
Specifically, the invention provides a driving system of a hybrid concrete mixer, comprising: the system comprises an engine, a clutch, a transmission, a drive axle, a driving motor controller, a high-voltage distribution box, an upper motor controller, an upper motor, an upper system and a power battery;
The engine is connected with the transmission through the clutch; a transmission output shaft of the transmission is connected with the drive axle;
a transmission power take-off interface of the transmission is connected with a driving motor;
the driving motor is electrically connected with the power battery through the driving motor controller and the high-voltage distribution box in sequence, and the generated or recovered electric energy is stored in the power battery;
the high-voltage distribution box is electrically connected with the upper mounting system through the upper mounting motor controller and the upper mounting motor;
the driving motor drives the upper-mounted motor to operate through the upper-mounted motor controller.
It is further noted that the driving motor has a driving state and a power generation state;
when the driving motor is in a driving state, driving force is provided for the vehicle through the transmission and the drive axle;
the driving motor starts the engine through the transmission and the clutch to realize the start-stop function of the engine;
when the vehicle slides or the braking energy is recovered, the driving motor enters a power generation state.
It is further noted that the driving motor stores the generated or recovered electric energy into the power battery through the driving motor controller and the high-voltage distribution box; and the upper motor is driven to operate by the upper motor controller.
The invention also provides a driving method of the hybrid power concrete mixer, which comprises the following steps:
The key switch is turned on;
loading and starting the concrete mixer truck;
judging whether the SOC of the power battery is larger than a lower limit value V1;
if the engine speed is greater than the lower limit value V1, controlling the engine to stop;
controlling the upper motor to be started;
the material loading switch is opened, and to the inside material loading of agitator tank, control agitator tank is with first predetermined speed operation.
It should be further noted that, the vehicle starts the running state, controls the driving motor to work in the power generation state, and starts the engine;
controlling the upper motor to operate and continuously driving the stirring tank to operate;
judging whether the engine load rate is lower than a lower limit value V1;
if the current is lower than the lower limit value V1, controlling the driving motor to work in a power generation state, and improving the load rate of the generator;
if the current value is higher than the lower limit value V1, the driving motor is controlled to work in a power generation state only when the vehicle slides or brakes, and energy feedback is realized; controlling the driving motor to output zero torque when the vehicle is driven;
and when the SOC of the power battery is greater than or equal to the upper limit value V2, controlling the driving motor to output zero torque.
It is further noted that the method further comprises:
the engine provides driving force for a vehicle through the clutch and the transmission, and the upper motor provides driving force for the upper system, so that the stirring tank runs at a preset rotating speed.
It should be further noted that the method further includes:
when the SOC of the power battery is between the lower limit value and the upper limit value and when the vehicle slides or brakes, controlling the driving motor to work in a power generation state and recovering energy;
when the vehicle accelerates, the driving motor is controlled to work in a driving state, and auxiliary driving is carried out on the vehicle running.
It is further noted that when the vehicle is parked, the engine is controlled to stop;
when the vehicle is started after parking, the driving motor is controlled to work in a driving state, and the engine is driven to start.
It should be further noted that the method further includes:
and when the SOC of the power battery is lower than the lower limit value, controlling the driving motor to work in a power generation state, and charging the power battery through the engine until the SOC of the power battery reaches a charging cut-off value.
It should be further noted that when the SOC of the power battery is higher than the upper limit value, the driving motor is controlled to operate in a zero-torque idling state, during which the upper-mounted motor and the upper-mounted system are controlled to operate normally until the SOC of the power battery reaches a discharge cut-off value.
According to the technical scheme, the invention has the following advantages:
the hybrid power concrete mixer driving system and the driving method provided by the invention have the advantages that the upper-mounted motor is used for independently driving the upper-mounted system to operate, the decoupling of the rotating speed of the mixing tank and the engine is realized, and the functions of starting and stopping the engine, sliding, recovering braking energy, adjusting the working area of the engine, assisting the driving of the motor and the like are realized through the coupling of the driving motor and the transmission, so that the dynamic property of the vehicle is improved, the economical efficiency of the vehicle is improved, and the smoothness of the vehicle when the engine starts and stops is improved.
The driving system and the driving method of the hybrid power concrete mixer truck provided by the invention solve the technical problems of high vehicle energy consumption, poor economy, incapability of realizing decoupling of an engine and a mixing tank and the like caused by the power system configuration of the traditional concrete mixer truck.
The driving motor can work in a driving state, provides driving force and improves the dynamic property of the vehicle. The driving motor can also be used for starting the engine through the transmission and the clutch, so that the starting and stopping functions of the engine are realized, and the smoothness of the vehicle in the starting and stopping processes of the engine is improved; the driving motor can work in a power generation state and is used for vehicle sliding and braking energy recovery, and vehicle economy is improved. The driving motor can be used for adjusting the working area of the engine, so that the engine works in a higher efficiency area, and the improvement of the vehicle economy is realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of a hybrid concrete mixer drive system;
FIG. 2 is a flow chart of a method of starting a hybrid concrete mixer;
FIG. 3 is a control flowchart during vehicle operation;
fig. 4 is a control flowchart of the vehicle during coasting or braking.
Description of reference numerals:
1-an engine, 2-a clutch, 3-a transmission, 4-a transmission output shaft, 5-a transmission power take-off interface, 6-a drive axle, 7-a drive motor, 8-a drive motor controller, 9-a high-voltage distribution box, 10-an upper motor controller, 11-an upper motor, 12-an upper system and 13-a power battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the hybrid concrete mixer driving system provided by the invention is applied to a hybrid concrete mixer, and the hybrid concrete mixer has two modes of electric driving and fuel driving, so that the power performance of the vehicle is improved, the economy of the vehicle is improved, and the smoothness of the vehicle during starting and stopping of an engine is improved.
The elements and algorithm steps of the various examples described in connection with the embodiments disclosed in the present invention for a hybrid concrete mixer vehicle propulsion system may be embodied in electronic hardware, computer software, or combinations thereof, and the components and steps of the various examples have been described generally in terms of their functionality in the foregoing description for clarity of illustration of interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The block diagrams shown in the figures of the system are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
A vehicle controller or vehicle processor may be disposed within the concrete mixer vehicle and may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, and an electronic unit designed to perform the functions described herein. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software code may be implemented by a software application (or program) written in any suitable programming language, which may be stored in memory and executed by the controller.
Specifically, the system comprises: the device comprises an engine 1, a clutch 2, a transmission 3, a drive axle 6, a drive motor 7, a drive motor controller 8, a high-voltage distribution box 9, an upper motor controller 10, an upper motor 11, an upper system 12 and a power battery 13;
the engine 1 is connected with the transmission 3 through the clutch 2; a transmission output shaft 4 of the transmission 3 is connected with a drive axle 6; a transmission power take-off interface 5 of the transmission 3 is connected with a driving motor 7; the driving motor 7 is electrically connected with the power battery 13 through the driving motor controller 8 and the high-voltage distribution box 9 in sequence, and the generated or recovered electric energy is stored in the power battery 13; the high-voltage distribution box 9 is electrically connected with an upper mounting system 12 through an upper mounting motor controller 10 and an upper mounting motor 11; the driving motor 7 drives the upper-mounted motor 11 to operate through the upper-mounted motor controller 10.
In the present invention, the engine 1 provides a running driving force to the vehicle through the clutch 2, the transmission 3, and the transaxle 6.
According to the working condition requirement of the vehicle, the driving motor 7 can work in a driving state, and the driving force is provided for the vehicle through the transmission 3 and the drive axle 6, so that the dynamic property of the vehicle is improved. The driving motor 7 can also be used for starting the engine 1 through the transmission 3 and the clutch 2, so that the start-stop function of the engine 1 is realized, and the smoothness of the vehicle in the start-stop process of the engine 1 is improved.
The driving motor 7 can work in a power generation state and is used for vehicle sliding and braking energy recovery, and vehicle economy is improved. The driving motor 7 can be used to adjust the operating region of the engine 1 so that the engine 1 operates in a higher efficiency region, achieving an improvement in vehicle economy.
The driving motor 7 can store the generated or recovered electric energy into a power battery 13 through a driving motor controller 8 and a high-voltage distribution box 9, and can also drive an upper-mounted motor 11 to operate through an upper-mounted motor controller 10. The top loading motor 11 provides mechanical power to the top loading system 12 according to the top loading operation requirements.
As shown in fig. 2 to 4, based on the driving system of the hybrid concrete mixer, the invention further provides a driving method of the hybrid concrete mixer, which relates to the starting process, the loading process, the driving process and the like of the hybrid concrete mixer. The starting method comprises the following steps:
the key switch is turned on; the driver can start the concrete mixer truck through the key switch.
Loading and starting the concrete mixer truck; the loading state of the concrete mixer truck can be started through the loading starting button.
Judging whether the SOC of the power battery 13 is greater than or equal to a lower limit value V1;
The state of the power battery 13 can be determined here by the vehicle processor, and the SOC data of the power battery 13 can be displayed on the instrument of the cab.
If the engine speed is greater than the lower limit value V1, the vehicle processor controls the engine 1 to be shut down;
if the current value is less than the lower limit value V1, the driving motor 7 is controlled to work in a power generation state to start the engine. After the engine is started, the engine enters an idling state, the driving motor 7 is continuously controlled to work in a power generation state, and the upper-mounted motor 11 is controlled to start. And if the SOC of the power battery 13 is more than or equal to V2, controlling the generator to be switched off.
The vehicle processor controls the upper motor 11 to be started;
the material loading switch is opened, and to the inside material loading of agitator tank, control agitator tank is with first predetermined speed operation. The stirring tank rotates while feeding, the first preset speed is set according to the process requirement and the size of the stirring tank, and the specific rotating speed is not limited here.
Further, the method of the invention is characterized in that the vehicle starts a running state, controls the driving motor 7 to work in a power generation state, and starts the engine 1;
controlling the upper motor 11 to operate and continuously driving the stirring tank to operate;
judging whether the load factor of the engine 1 is lower than a lower limit value V1;
if the current is lower than the lower limit value V1, controlling the driving motor 7 to work in a power generation state, and improving the load rate of the generator;
If the current value is higher than the lower limit value V1, the driving motor 7 is controlled to work in a power generation state only when the vehicle slides or brakes, and energy feedback is realized; controlling the driving motor to output zero torque when the vehicle is driven;
and when the SOC of the power battery is greater than or equal to the upper limit value V2, controlling the driving motor to output zero torque.
In the method of the invention, the engine 1 provides driving force for a vehicle through the clutch 2 and the transmission 3, and the upper-mounted motor 11 provides driving force for the upper-mounted system 12, so that the stirring tank runs at a preset rotating speed.
When the SOC of the power battery 13 is between the lower limit value and the upper limit value and when the vehicle slides or brakes, controlling the driving motor 7 to work in a power generation state and recovering energy;
and if the vehicle is accelerated, controlling the driving motor 7 to work in a driving state to perform auxiliary driving on the running of the vehicle.
If the vehicle is parked, controlling the engine 1 to stop; when the vehicle is started after parking, the driving motor 7 is controlled to work in a driving state, and the engine 1 is driven to start.
When the vehicle normally runs, the engine 1 provides driving force for the vehicle through the clutch 2 and the transmission 3, and the upper motor 11 provides driving force for the upper system 12, so that the stirring tank is stabilized at a fixed rotating speed N 0And (6) operating.
Further, the method of the present invention further comprises: when the SOC of the power battery 13 is lower than the lower limit value, the driving motor 7 is controlled to work in a power generation state, and the power battery 13 is charged through the engine 1 until the SOC of the power battery 13 reaches a charging cut-off value.
When the SOC of the power battery 13 is higher than the upper limit value, the driving motor 7 is controlled to work in a zero-torque idling state, and the upper-loading motor 11 and the upper-loading system 12 are controlled to normally run until the SOC of the power battery 13 reaches a discharging cut-off value.
Therefore, the method of the invention realizes the decoupling of the rotation speed of the stirring tank and the engine by independently driving the upper system to operate by using the upper motor, realizes the functions of starting and stopping the engine, sliding, recovering braking energy, adjusting the working area of the engine, assisting the driving of the motor and the like by coupling the driving motor and the transmission, and further improves the dynamic property of the vehicle, the economical efficiency of the vehicle and the smoothness of the vehicle when the engine starts and stops.
In the driving system and the driving method for the hybrid concrete mixer truck provided by the invention, it should be understood that the disclosed system, device and method can be realized in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The hybrid concrete mixer driving system and driving method provided in the present invention are the units and algorithm steps of each example described in connection with the embodiments disclosed herein, and can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
Those skilled in the art will appreciate that aspects of the hybrid concrete mixer vehicle drive system and method of driving provided in the invention may be embodied as a system, method or program product. Accordingly, various aspects of the disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a series-parallel hybrid concrete mixer actuating system which characterized in that includes: the device comprises an engine (1), a clutch (2), a transmission (3), a drive axle (6), a driving motor (7), a driving motor controller (8), a high-voltage distribution box (9), an upper motor controller (10), an upper motor (11), an upper system (12) and a power battery (13);
the engine (1) is connected with the transmission (3) through the clutch (2); a transmission output shaft (4) of the transmission (3) is connected with a drive axle (6);
a transmission power take-off interface (5) of the transmission (3) is connected with a driving motor (7);
the driving motor (7) is electrically connected with the power battery (13) through the driving motor controller (8) and the high-voltage distribution box (9) in sequence, and the generated or recovered electric energy is stored in the power battery (13);
The high-voltage distribution box (9) is electrically connected with the upper mounting system (12) through an upper mounting motor controller (10) and an upper mounting motor (11);
the driving motor (7) drives the upper-mounted motor (11) to operate through the upper-mounted motor controller (10).
2. The hybrid concrete mixer drive system of claim 1,
the driving motor (7) has a driving state and a power generation state;
when the driving motor (7) is in a driving state, driving force is provided for the vehicle through the transmission (3) and the drive axle (6);
the driving motor (7) starts the engine (1) through the transmission (3) and the clutch (2) to realize the start-stop function of the engine (1);
when the vehicle slides or the braking energy is recovered, the driving motor (7) enters a power generation state.
3. The hybrid concrete mixer drive system of claim 1,
the driving motor (7) stores the generated or recovered electric energy into the power battery (13) through the driving motor controller (8) and the high-voltage distribution box (9); and the upper motor (11) is driven to operate by the upper motor controller (10).
4. A driving method of a hybrid concrete mixer, which is characterized in that the driving system of the hybrid concrete mixer according to any one of claims 1 to 3 is adopted;
The method comprises the following steps:
the key switch is turned on;
loading and starting the concrete mixer truck;
judging whether the SOC of the power battery (13) is greater than a lower limit value V1;
if the engine speed is larger than the lower limit value V1, controlling the engine (1) to stop;
controlling the upper motor (11) to be started;
the material loading switch is opened, and to the inside material loading of agitator tank, control agitator tank is with first predetermined speed operation.
5. The hybrid concrete mixer driving method according to claim 4,
the vehicle starts a running state, controls the driving motor (7) to work in a power generation state, and starts the engine (1);
controlling the upper motor (11) to operate and continuously driving the stirring tank to operate;
judging whether the load factor of the engine (1) is lower than a lower limit value V1;
if the load is lower than the lower limit value V1, controlling the driving motor (7) to work in a power generation state, and increasing the load rate of the power generator;
if the energy feedback is higher than the lower limit value V1, the driving motor (7) is controlled to work in a power generation state only when the vehicle slides or brakes, and energy feedback is realized; controlling the driving motor to output zero torque when the vehicle is driven;
and when the SOC of the power battery is greater than or equal to the upper limit value V2, controlling the driving motor to output zero torque.
6. The hybrid concrete mixer driving method according to claim 4,
The method further comprises the following steps:
the engine (1) provides driving force for a vehicle through the clutch (2) and the transmission (3), and meanwhile the upper-mounted motor (11) provides driving force for the upper-mounted system (12), so that the stirring tank runs at a preset rotating speed.
7. The method of driving a hybrid concrete mixer truck according to claim 4, further comprising:
when the SOC of the power battery (13) is between the lower limit value and the upper limit value and when the vehicle slides or brakes, the driving motor (7) is controlled to work in a power generation state to recover energy;
when the vehicle accelerates, the driving motor (7) is controlled to work in a driving state, and auxiliary driving is carried out on the running of the vehicle.
8. The hybrid concrete mixer driving method according to claim 4, wherein,
when the vehicle is parked, the engine (1) is controlled to stop;
when the vehicle is started after parking, the driving motor (7) is controlled to work in a driving state, and the driving engine (1) is driven to start.
9. The method of driving a hybrid concrete mixer truck according to claim 4, further comprising:
when the SOC of the power battery (13) is lower than the lower limit value, the driving motor (7) is controlled to work in a power generation state, and the power battery (13) is charged through the engine (1) until the SOC of the power battery (13) reaches a charging cut-off value.
10. The hybrid concrete mixer driving method according to claim 4, wherein,
when the SOC of the power battery (13) is higher than the upper limit value, the driving motor (7) is controlled to work in a zero-torque idling state, and the upper motor (11) and the upper system (12) are controlled to normally run until the SOC of the power battery (13) reaches a discharge cut-off value.
CN202210243449.5A 2022-03-11 2022-03-11 Driving system and driving method for hybrid power concrete mixer Pending CN114670621A (en)

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