CN112109687A - Composite brake control system - Google Patents
Composite brake control system Download PDFInfo
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- CN112109687A CN112109687A CN202011019763.2A CN202011019763A CN112109687A CN 112109687 A CN112109687 A CN 112109687A CN 202011019763 A CN202011019763 A CN 202011019763A CN 112109687 A CN112109687 A CN 112109687A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
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- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/602—ABS features related thereto
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a composite brake control system, which comprises a composite controller, at least one mechanical axle and at least one electric axle, wherein the composite controller is connected with the mechanical axle; the mechanical axle comprises a first proportional relay valve and two first wheel ABS braking modules, wherein the two first wheel ABS braking modules are respectively used for braking the first wheels at two ends of the mechanical axle; the electric axle comprises two second wheel braking modules which are respectively used for braking electric wheels at two ends of the electric axle; the first proportional relay valve, the two first wheel ABS brake modules and the two second wheel brake modules are respectively and electrically connected with the composite controller; and the two first wheel ABS brake modules are respectively connected with the first proportional relay valve through pipelines. This application makes the regenerative braking system of electronic round can carry out energy recuperation, and then ABS braking system and regenerative braking system can coordinate.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a composite brake control system.
Background
With the continuous development of automobiles, various automobiles have appeared, including conventional automobiles using gasoline and electric automobiles driven using electric energy. The traditional automobile uses an ABS braking system, so that the phenomenon of locking of tires can be avoided; compared with the traditional automobile, the electric automobile simplifies a mechanical transmission mechanism, so that the efficiency of motor driving is greatly improved, and a regenerative braking system can be configured, namely, the electric automobile can recover braking torque generated in the braking process by means of the power generation function of the motor in the electric wheel, so that braking energy is formed.
However, in the related art, the ABS braking system and the regenerative braking system cannot work in coordination, so that the regenerative braking system cannot recover energy when the ABS braking system is effective.
Disclosure of Invention
The embodiment of the application provides a composite brake control system, solves the problem that an ABS (anti-lock brake system) and a regenerative brake system cannot work coordinately in the prior art, realizes unified control on the ABS and the regenerative brake system, and has the technical effect that the regenerative brake system can also recover energy when the ABS acts.
The application provides a composite brake control system, which comprises a composite controller, at least one mechanical axle and at least one electric axle; wherein the content of the first and second substances,
the mechanical axle comprises a first proportional relay valve and two first wheel ABS braking modules, and the two first wheel ABS braking modules are respectively used for braking the first wheels at two ends of the mechanical axle;
the electric axle comprises two second wheel braking modules which are respectively used for braking electric wheels at two ends of the electric axle;
the first proportional relay valve, the two first wheel ABS brake modules and the two second wheel brake modules are respectively and electrically connected with the composite controller; the two first wheel ABS brake modules are respectively connected with the first proportional relay valve through pipelines;
the composite controller is used for receiving first wheel speed information obtained by detecting the first wheel by the first wheel ABS braking module, receiving second wheel speed information obtained by detecting the electric wheel by the second wheel braking module, and distributing braking force for the first wheel at two ends of the mechanical axle and the electric wheel at two ends of the electric axle through the first proportional relay valve and the two second wheel braking modules according to the first wheel speed information and the second wheel speed information.
Further, the first wheel ABS braking module comprises a first wheel speed sensor, a first ABS regulator and a first braking execution module, wherein the first wheel speed sensor and the first ABS regulator are respectively and electrically connected with the composite controller; the first proportional relay valve, the first ABS regulator and the first brake execution module are sequentially connected through a pipeline;
the first wheel speed sensor is used for detecting first wheel speed information; the first brake execution module is used for braking a first wheel; the first proportional relay valve is used for receiving a first control signal generated by the composite controller according to the distributed braking force, and further controlling the first ABS regulator to regulate the pipeline pressure of the first brake execution module according to the first control signal so as to brake the first wheel.
Further, the first brake execution module comprises a first brake air chamber and a first brake, and the first ABS regulator, the first brake air chamber and the first brake are sequentially connected through a pipeline;
the first brake air chamber is used for generating braking force; the first brake is used for braking the first wheel according to the braking force.
Furthermore, the second wheel braking module comprises a second proportional electromagnetic valve and a second braking execution module, the composite controller is electrically connected with the second proportional electromagnetic valve, and the second proportional electromagnetic valve is connected with the second braking execution module through a pipeline;
the second proportional relay valve is used for receiving a second control signal generated by the composite controller according to the distributed braking force and adjusting the pipeline pressure of the second brake execution module according to the second control signal so as to brake the electric wheel.
Further, the second brake execution module comprises a second brake air chamber and a second brake, and the second proportional solenoid valve, the second brake air chamber and the second brake are sequentially connected through a pipeline;
the second brake air chamber is used for generating braking force; the second brake is used for braking the electric wheel according to the braking force.
Further, when the number of the electric axles is multiple, the electric wheels on the same side of the multiple electric axles share one second proportional relay valve.
Further, the system also comprises a brake pedal which is electrically connected with the composite controller; the composite controller is further configured to:
acquiring first load information of first wheels at two ends of a mechanical axle, second load information of electric wheels at two ends of an electric axle and brake information of a brake pedal;
determining respective braking forces of a first wheel at two ends of the mechanical axle and an electric wheel at two ends of the electric axle according to the first load information, the second load information and the brake information;
controlling a first proportional relay valve to adjust the pipeline pressure for first wheels at two ends of the mechanical axle according to the braking force;
and controlling a second wheel brake module to adjust the pipeline pressure for the electric wheels at the two ends of the electric axle according to the braking force.
Further, the electric wheel comprises a motor, and the system further comprises a battery; the composite controller is further configured to:
after the brake pedal generates brake information, the battery is controlled to receive the regenerated electric energy generated by the motor.
Furthermore, the composite controller is also used for judging whether the first wheel is about to be locked or not according to the first wheel speed information and the moving speed information of the mechanical axle;
the composite controller is also used for judging whether the electric wheel is about to generate locking phenomenon or not according to the second wheel speed information and the moving speed information of the electric axle.
Further, when the number of the mechanical axles is plural, the plural mechanical axles share one first proportional relay valve.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the application collects the wheel speed information of each wheel of the mechanical axle and the electric axle in a unified way through the composite controller, and then distributes corresponding braking force for each wheel on the basis of balancing the braking effect of each wheel as a principle so as to achieve the purpose of stably decelerating each wheel.
2. The braking force is reasonably distributed to the wheels of the mechanical axle and the electric axle through the composite controller, so that the regenerative braking system of the electric wheel can recover energy, and even if the mechanical axle brakes by using the ABS executing system, the regenerative braking system of the electric wheel can recover energy, so that the ABS braking system and the regenerative braking system can be coordinated and matched.
3. This application makes ABS braking system and regenerative braking system can coordinate the cooperation through compound controller, and then can improve motor drive's efficiency, also can improve energy utilization.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a compound brake control system provided herein;
FIG. 2 is a schematic illustration of another hybrid brake control system provided herein;
FIG. 3 is a schematic illustration of another hybrid brake control system provided herein;
fig. 4 is a schematic structural diagram of another hybrid brake control system provided by the present application.
Detailed Description
Prior to explaining the present application, the related art is explained as follows:
in a conventional automobile, the torque generated by the engine must drive the wheels through mechanical devices such as gears and transmission shafts, and in the process, a part of energy is consumed by mechanical movement. The axle that drives the wheels forward by mechanical devices such as gears and transmission shafts is referred to as a mechanical axle.
Compared with the traditional automobile, the electric vehicle with the motor (the axle driven by the motor to drive the wheels to move is called as an electric axle) simplifies a mechanical transmission mechanism, electric energy generated by the battery is directly transmitted to the motor arranged in the wheels, and energy losses in the mechanical transmission process are greatly reduced, so that the motor driving efficiency is greatly improved. In addition, the electric wheel vehicle can recover the generated braking torque during braking by means of the power generation function of the motor to form braking energy, wherein a system for recovering the braking torque to generate the braking energy is called a regenerative braking system.
On the basis of the above-mentioned technology, the related art provides an automobile including both a mechanical axle and an electric axle. In the braking of the automobile, an ABS braking system of a mechanical axle is taken as a main part, and a regenerative braking system of an electric axle is taken as an auxiliary part.
Among them, an ABS braking System used in a conventional automobile, also called an Antilock braking System (ABS for short), is a safety device widely used in modern automobiles to prevent tires from locking during braking during driving. When braking is performed during sudden braking or during driving on a vicious road, the vehicle is out of control due to tire locking, the braking distance is also lengthened, and the ABS braking system is a preventive safety device for preventing tire locking in advance, maintaining an optimal braking force, and reducing the risk of accidents.
Although the ABS braking system and the regenerative braking system are applied to a single vehicle, the regenerative braking system does not work when the ABS braking system is braking, that is, the regenerative braking system does not recover the braking torque, that is, the ABS braking system and the regenerative braking system in the related art cannot work in coordination. That is, in the related art, the ABS braking system and the regenerative braking system belong to two relatively independent systems. When the ABS braking system and the regenerative braking system work simultaneously, the potential safety hazard of braking failure exists, so that the regenerative braking system can be used only when the ABS braking system fails.
The embodiment of the application provides a composite brake control system, and solves the technical problem that an ABS (anti-lock brake system) and a regenerative brake system cannot work in a coordinated mode in the prior art.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a compound brake control system comprises a compound controller, at least one mechanical axle and at least one electric axle; the mechanical axle comprises a first proportional relay valve and two first wheel ABS braking modules, wherein the two first wheel ABS braking modules are respectively used for braking the first wheels at two ends of the mechanical axle; the electric axle comprises two second wheel braking modules which are respectively used for braking electric wheels at two ends of the electric axle; the first proportional relay valve, the two first wheel ABS brake modules and the two second wheel brake modules are respectively and electrically connected with the composite controller; the two first wheel ABS brake modules are respectively connected with the first proportional relay valve through pipelines; the composite controller is used for receiving first wheel speed information obtained by detecting the first wheel by the first wheel ABS braking module, receiving second wheel speed information obtained by detecting the electric wheel by the second wheel braking module, and distributing braking force for the first wheel at two ends of the mechanical axle and the electric wheel at two ends of the electric axle through the first proportional relay valve and the two second wheel braking modules according to the first wheel speed information and the second wheel speed information.
The braking force is reasonably distributed to the wheels of the mechanical axle and the electric axle through the composite controller, so that the regenerative braking system of the electric wheel can recover energy, and even if the mechanical axle brakes by using the ABS executing system, the regenerative braking system of the electric wheel can recover energy, so that the ABS braking system and the regenerative braking system can be coordinated and matched.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The present application provides a compound brake control system as shown in fig. 1, the system comprising a compound controller, at least one mechanical axle and at least one electric axle; wherein the content of the first and second substances,
as shown in fig. 2, the mechanical axle includes a first proportional relay valve and two first wheel ABS braking modules, which are respectively used for braking the first wheels at both ends of the mechanical axle. The electric axle comprises two second wheel braking modules which are respectively used for braking the electric wheels at two ends of the electric axle. The first proportional relay valve, the two first wheel ABS brake modules and the two second wheel brake modules are respectively and electrically connected with the composite controller; and the two first wheel ABS brake modules are respectively connected with the first proportional relay valve through pipelines.
The composite controller is used for receiving first wheel speed information obtained by detecting the first wheel by the first wheel ABS braking module, receiving second wheel speed information obtained by detecting the electric wheel by the second wheel braking module, and distributing braking force for the first wheel at two ends of the mechanical axle and the electric wheel at two ends of the electric axle through the first proportional relay valve and the two second wheel braking modules according to the first wheel speed information and the second wheel speed information.
More specifically, as shown in fig. 3, the first wheel ABS braking module includes a first wheel speed sensor, a first ABS regulator, and a first brake execution module, the first wheel speed sensor and the first ABS regulator being electrically connected to the composite controller, respectively; the first proportional relay valve, the first ABS regulator and the first brake execution module are sequentially connected through a pipeline; the first brake execution module comprises a first brake air chamber and a first brake, and the first ABS regulator, the first brake air chamber and the first brake are sequentially connected through a pipeline.
The first wheel speed sensor is used for detecting first wheel speed information; the first brake execution module is used for braking a first wheel; the first proportional relay valve is used for receiving a first control signal generated by the composite controller according to the distributed braking force, and further controlling the first ABS regulator to regulate the pipeline pressure of the first brake execution module according to the first control signal so as to brake the first wheel. The first brake air chamber is used for generating braking force; the first brake is used for braking the first wheel according to the braking force.
The first wheel speed sensor and the first brake directly act on a first wheel of the mechanical axle. The first wheel speed sensor can adopt a gear ring sensor, the gear ring sensor directly acts on the first wheel, the gear ring sensor detects pulse signals, and the pulse signals are converted to obtain first wheel speed information of the first wheel. The first brake air chamber generates braking force, namely the first brake air chamber applies pressure to the first brake, so that the first brake surrounds the axle of the first wheel, and the braking effect of the first wheel is further realized.
The second wheel braking module comprises a second proportional electromagnetic valve and a second braking execution module, the composite controller is electrically connected with the second proportional electromagnetic valve, and the second proportional electromagnetic valve is connected with the second braking execution module through a pipeline; the second brake execution module comprises a second brake air chamber and a second brake, and the second proportional solenoid valve, the second brake air chamber and the second brake are sequentially connected through a pipeline.
The second proportional relay valve is used for receiving a second control signal generated by the composite controller according to the distributed braking force and adjusting the pipeline pressure of the second brake execution module according to the second control signal so as to brake the electric wheel. The second brake air chamber is used for generating braking force; the second brake is used for braking the electric wheel according to the braking force.
Wherein, electronic round is because through the motor direct drive, then can directly acquire the fast information of second wheel of electronic round through the motor, also need not to install extra wheel speed sensor again on electronic round with the fast information of detection second wheel. The second brake air chamber generates braking force, namely the second brake air chamber applies pressure to the second brake, so that the second brake surrounds the axle of the electric wheel, and the braking effect of the electric wheel is further realized.
The application provides a braking system, no matter the braking object is the ordinary first wheel of installation on the mechanical axle, or the electronic wheel of installation on the electronic axle, all adopt air braking to realize the braking to the wheel.
The system configuration of the present application is explained above, and the operation and cooperation of the components in the system will now be explained with respect to a vehicle having two axles (a mechanical axle and an electric axle, respectively). To more clearly illustrate the braking system provided by the present application, the functionally identical devices of FIG. 3 but having different objects of action are distinguished by the addition of the suffix A, B, C, D, see particularly FIG. 4. The suffix A, B, C, D does not have any limiting effect on the respective device.
For example, a first brake actuation module a is used as a device acting on a first wheel a, and a first brake actuation module B is used as a device acting on a first wheel B; the second brake actuation module C is considered as a device acting on the electric wheel C, and the second brake actuation module D is considered as a device acting on the electric wheel D.
The vehicle is driven by a driver, and when the driver applies pressure to the brake pedal, it means that the driver judges that the current driving section needs to brake the vehicle.
The brake signal of the brake pedal is transmitted to the composite controller, and after the composite controller receives the brake signal, the following actions are carried out:
the method comprises the steps of collecting first wheel speed information A of a first wheel A through a first wheel speed sensor A, collecting first wheel speed information B of the first wheel B through the first wheel speed sensor B, collecting second wheel speed information C of an electric wheel C through the motor rotating speed of the electric wheel C, and collecting second wheel speed information D of the electric wheel D through the motor rotating speed of the electric wheel D.
The composite controller determines the respective speeds of the first wheel A, the first wheel B, the electric wheel C and the electric wheel D which need to be reduced and the corresponding braking strength according to the relationship among the first wheel speed information A, the first wheel speed information B, the second wheel speed information C and the second wheel speed information D so as to ensure the stable running or stopping of the vehicle.
The composite controller generates corresponding control signals for the first wheel a, the first wheel B, the electric wheel C and the electric wheel D, respectively, which are the control signal a, the control signal B, the control signal C and the control signal D.
The composite controller sends the control signal A and the control signal B to the first proportional relay valve, and the first proportional relay valve balances the braking force between the first wheel A and the first wheel B according to the control signal A and the control signal B.
The first proportional relay valve generates a control sub-signal A of the first ABS regulator A according to the control signal A, the first ABS regulator A controls the first brake air chamber A to generate braking force with corresponding strength according to the control sub-signal A, and the braking force drives the first brake A to brake the first wheel A.
Similarly, the first proportional relay valve generates a control sub-signal B of the first ABS regulator B according to the control signal B, the first ABS regulator B controls the first brake chamber B to generate a braking force with a corresponding intensity according to the control sub-signal B, and the braking force drives the first brake B to brake the first wheel B.
Therefore, the first proportional relay valve in the mechanical axle is used for balancing the braking force between the first wheels at two ends of the mechanical axle, and the vehicle out-of-control accident caused by the fact that the deceleration difference between the first wheel A and the first wheel B is too large is avoided.
When the number of the mechanical axles is multiple, the multiple mechanical axles share one first proportional relay valve, that is, braking force distribution is performed on multiple wheels of the multiple mechanical axles through the first proportional relay valve.
And the composite controller respectively sends the control signal C and the control signal D to a second proportional solenoid valve C and a second proportional solenoid valve D.
Since the example shown in fig. 4 has only one electric axle, that is, only one electric wheel on one side of the vehicle, the second proportional electromagnetic valve C can directly control the second brake chamber C to generate a braking force with a corresponding strength after receiving the control signal C, and the braking force drives the second brake C to brake the electric wheel C.
Similarly, the second proportional solenoid valve D can directly control the second brake chamber D to generate the braking force with the corresponding strength after receiving the control signal D, and the braking force drives the second brake D to brake the electric wheel D.
When the number of the electric axles is multiple, the electric wheels of the electric axles on the same side of the vehicle share one second proportional electromagnetic valve, and the second proportional electromagnetic valve distributes the braking force of the electric wheels on the same side.
In the whole process that the vehicle is braked, the motors of the electric wheel C and the electric wheel D can play the role of a generator, the braking torque of the electric wheel C and the braking torque of the electric wheel D are converted into regenerative electric energy, the composite controller controls the battery to receive the regenerative electric energy, and other electric equipment on the vehicle can be controlled to use the regenerative electric energy. That is, the electric wheel includes an electric motor, and the system further includes a battery; the composite controller is further configured to: after the brake pedal generates brake information, the battery is controlled to receive the regenerated electric quantity generated by the motor.
In conclusion, the wheel speed information of each wheel of the mechanical axle and the electric axle is collected through the composite controller in a unified mode, and then on the basis that the braking effect of each wheel is balanced as the principle, the corresponding braking force is distributed to each wheel, so that the purpose of stably decelerating each wheel is achieved. The braking force is reasonably distributed to the wheels of the mechanical axle and the electric axle through the composite controller, so that the regenerative braking system of the electric wheel can recover energy, and even if the mechanical axle brakes by using the ABS executing system, the regenerative braking system of the electric wheel can recover energy, so that the ABS braking system and the regenerative braking system can be coordinated and matched. This application makes ABS braking system and regenerative braking system can coordinate the cooperation through compound controller, and then can improve motor drive's efficiency, also can improve energy utilization.
The process of distributing braking force for the mechanical axle and the electric axle by the composite controller of the application is as follows:
step S1, acquiring first load information of first wheels at two ends of a mechanical axle, second load information of electric wheels at two ends of an electric axle and brake information of a brake pedal; the first load information is the braking strength information of the first wheels at the two ends of the mechanical axle, and the second load information is the braking strength information of the electric wheels at the two ends of the electric axle.
Step S2, determining respective braking forces of the first wheels at the two ends of the mechanical axle and the electric wheels at the two ends of the electric axle according to the first load information, the second load information and the brake information;
step S3, controlling a first proportional relay valve to adjust the pipeline pressure for the first wheels at the two ends of the mechanical axle according to the braking force; and controlling a second wheel brake module to adjust the pipeline pressure for the electric wheels at the two ends of the electric axle according to the braking force.
In the process executed in step S1-step S3, the composite controller is further configured to determine whether the first wheel is about to be locked according to the first wheel speed information and the moving speed information of the mechanical axle; the composite controller is also used for judging whether the electric wheel is about to generate locking phenomenon or not according to the second wheel speed information and the moving speed information of the electric axle.
That is, during the execution of steps S1-S3, the composite controller needs to constantly monitor the status of each wheel (including the first wheel and the electric wheel) on the vehicle, so as to avoid the locking phenomenon of the wheels, i.e. achieve the braking effect of the ABS braking system.
Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A compound brake control system, characterized in that the system comprises a compound controller, at least one mechanical axle and at least one electric axle; wherein the content of the first and second substances,
the mechanical axle comprises a first proportional relay valve and two first wheel ABS braking modules, and the two first wheel ABS braking modules are respectively used for braking the first wheels at two ends of the mechanical axle;
the electric axle comprises two second wheel braking modules which are respectively used for braking electric wheels at two ends of the electric axle;
the first proportional relay valve, the two first wheel ABS brake modules and the two second wheel brake modules are respectively and electrically connected with the composite controller; the two first wheel ABS brake modules are respectively connected with the first proportional relay valve through pipelines;
the composite controller is used for receiving first wheel speed information obtained by detecting the first wheel by the first wheel ABS brake module, receiving second wheel speed information obtained by detecting the electric wheel by the second wheel brake module, and distributing braking force for the first wheel at two ends of the mechanical axle and the electric wheel at two ends of the electric axle through the first proportional relay valve and the two second wheel brake modules according to the first wheel speed information and the second wheel speed information.
2. The system of claim 1, wherein the first wheel ABS braking module comprises a first wheel speed sensor, a first ABS modulator, and a first brake actuation module, the first wheel speed sensor and the first ABS modulator each electrically connected to the composite controller; the first proportional relay valve, the first ABS regulator and the first brake execution module are sequentially connected through a pipeline;
wherein the first wheel speed sensor is configured to detect the first wheel speed information; the first brake execution module is used for braking the first wheel; the first proportional relay valve is used for receiving a first control signal generated by the composite controller according to the distributed braking force, and further controlling the first ABS regulator to regulate the pipeline pressure of the first brake execution module according to the first control signal so as to brake the first wheel.
3. The system of claim 2, wherein the first brake actuation module includes a first brake chamber and a first brake, the first ABS modulator, the first brake chamber, and the first brake being connected in series by a conduit;
wherein the first brake chamber is used for generating the braking force; the first brake is used for braking the first wheel according to the braking force.
4. The system of claim 1, wherein the second wheel brake module includes a second proportional solenoid valve and a second brake actuation module, the composite controller being electrically connected to the second proportional solenoid valve, the second proportional solenoid valve being connected to the second brake actuation module by a conduit;
the second proportional relay valve is used for receiving a second control signal generated by the composite controller according to the distributed braking force and adjusting the pipeline pressure of the second brake execution module according to the second control signal so as to brake the electric wheel.
5. The system of claim 4, wherein the second brake execution module comprises a second brake chamber and a second brake, and the second proportional solenoid valve, the second brake chamber and the second brake are connected in sequence through a pipeline;
wherein the second brake chamber is used for generating the braking force; the second brake is used for braking the electric wheel according to the braking force.
6. The system of claim 4, wherein when said electric axles are plural in number, said electric wheels on the same side of plural electric axles share one said second proportional relay valve.
7. The system of claim 1, further comprising a brake pedal electrically connected to the composite controller; the composite controller is further configured to:
acquiring first load information of the first wheels at two ends of the mechanical axle, second load information of the electric wheels at two ends of the electric axle and brake information of the brake pedal;
determining the braking force of each of the first wheel at the two ends of the mechanical axle and the electric wheel at the two ends of the electric axle according to the first load information, the second load information and the brake information;
controlling the first proportional relay valve to adjust the pipeline pressure for the first wheels at two ends of the mechanical axle according to the braking force;
and controlling the second wheel brake module to adjust the pipeline pressure for the electric wheels at two ends of the electric axle according to the braking force.
8. The system of claim 7, wherein the powered wheel comprises an electric motor, the system further comprising a battery; the composite controller is further configured to:
and after the brake pedal generates the brake information, controlling the battery to receive the regenerated electric energy generated by the motor.
9. The system of claim 1, wherein the composite controller is further configured to determine whether the first wheel is about to be locked according to the first wheel speed information and the moving speed information of the mechanical axle;
and the composite controller is also used for judging whether the electric wheel is about to generate locking phenomenon or not according to the second wheel speed information and the moving speed information of the electric axle.
10. The system of claim 1, wherein when the number of the mechanical axles is plural, a plurality of the mechanical axles share one of the first proportional relay valves.
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| CN202011019763.2A CN112109687B (en) | 2020-09-25 | 2020-09-25 | Composite brake control system |
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