CN113276807A - Failure processing method and device for energy recovery system of electric automobile, automobile and medium - Google Patents
Failure processing method and device for energy recovery system of electric automobile, automobile and medium Download PDFInfo
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- CN113276807A CN113276807A CN202110590138.1A CN202110590138A CN113276807A CN 113276807 A CN113276807 A CN 113276807A CN 202110590138 A CN202110590138 A CN 202110590138A CN 113276807 A CN113276807 A CN 113276807A
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- 238000011084 recovery Methods 0.000 title claims abstract description 185
- 238000003672 processing method Methods 0.000 title claims abstract description 16
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- 238000013507 mapping Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims 1
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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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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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
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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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
Abstract
The invention discloses a failure processing method, a device, an automobile and a medium for an energy recovery system of an electric automobile, wherein the method comprises the steps of detecting the current running speed of the automobile in real time after the energy recovery system of the automobile is started, and comparing the current running speed with a preset failure speed threshold; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails; when the current running speed reaches the preset failure speed threshold value, sending a starting instruction to a brake system of the automobile so as to enable the brake system to be started according to the starting instruction; and when the current running speed of the automobile is equal to zero, sending a closing instruction to a braking system of the automobile so as to enable the braking system to be closed according to the closing instruction. The invention improves the vehicle using experience of the user and also improves the safety of the vehicle in the driving process.
Description
Technical Field
The invention relates to the technical field of energy recovery systems, in particular to a failure processing method and device for an energy recovery system of an electric vehicle, a vehicle and a medium.
Background
With the more and more perfect energy recovery system in electric automobile or hybrid vehicle, the function of realizing vehicle deceleration through energy recovery system is also gradually perfect. However, at present, when the automobile is in a low-speed state, the energy recovery system of the automobile may fail, and then the automobile can continue to slide forward for a certain distance to stop running after the energy recovery system fails, so that the user is not good in automobile using experience, safety accidents are easy to happen, and the driving safety of the automobile is reduced.
Disclosure of Invention
The embodiment of the invention provides a failure processing method and device for an electric vehicle energy recovery system, a vehicle and a medium, and aims to solve the problems that the driving safety of the vehicle is low and the vehicle using experience of a user is poor.
A failure processing method for an electric vehicle energy recovery system comprises the following steps:
after an energy recovery system of an automobile is started, detecting the current running speed of the automobile in real time, and comparing the current running speed with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails;
when the current running speed reaches the preset failure speed threshold value, sending a starting instruction to a brake system of the automobile so as to enable the brake system to be started according to the starting instruction;
and when the current running speed of the automobile is equal to zero, sending a closing instruction to a braking system of the automobile so as to enable the braking system to be closed according to the closing instruction.
An electric automobile energy recovery system failure processing device includes:
the running speed detection module is used for detecting the current running speed of the automobile in real time after an energy recovery system of the automobile is started, and comparing the current running speed with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails;
the brake system starting module is used for sending a starting instruction to a brake system of the automobile when the current running speed reaches the preset failure speed threshold value so as to enable the brake system to be started according to the starting instruction;
and the braking system closing module is used for sending a closing instruction to the braking system of the automobile when the current running speed of the automobile is equal to zero so as to enable the braking system to be closed according to the closing instruction.
An automobile comprises an energy recovery system, a braking system and a controller which is in communication connection with the energy recovery system and the braking system; the controller is used for executing the failure processing method of the electric automobile energy recovery system.
A computer-readable storage medium, which stores a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned electric vehicle energy recovery system failure processing method.
According to the method, the device, the automobile and the medium for processing the failure of the energy recovery system of the electric automobile, after the energy recovery system of the automobile is started, the current running speed of the automobile is detected in real time, and the current running speed is compared with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails; when the current running speed reaches the preset failure speed threshold value, sending a starting instruction to a brake system of the automobile so as to enable the brake system to be started according to the starting instruction; and when the current running speed of the automobile is equal to zero, sending a closing instruction to a braking system of the automobile so as to enable the braking system to be closed according to the closing instruction.
According to the invention, the preset failure speed threshold is introduced to judge whether the energy recovery system of the automobile is about to fail, and then when the energy recovery system is likely to fail (namely when the current running speed reaches the preset failure speed threshold), the braking system is started by sending a starting instruction to the braking system of the automobile, so that the automobile is prevented from automatically sliding forward for a certain distance when the energy recovery system fails, the automobile using experience of a user is improved, and the safety of the automobile in the running process is also improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, 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 according to these drawings without inventive labor.
FIG. 1 is a flowchart illustrating a method for handling a failure of an energy recovery system of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a flowchart of step S20 of the electric vehicle energy recovery system failure processing method according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of a failure handling apparatus for an energy recovery system of an electric vehicle according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a brake system starting module in the failure processing device of the energy recovery system of the electric vehicle according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a computer device according to an embodiment of the invention.
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 some, not all, embodiments of the present invention. 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.
In an embodiment, as shown in fig. 1, a method for handling failure of an electric vehicle energy recovery system is provided, where the method for handling failure of an electric vehicle energy recovery system is applied to a controller of a vehicle, and includes the following steps:
s10: after an energy recovery system of an automobile is started, detecting the current running speed of the automobile in real time, and comparing the current running speed with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails.
It can be understood that after the energy recovery system of the automobile is started, the automobile may be in a deceleration state, but in the process of gradually reducing the current running speed of the automobile, when the current running speed of the automobile is reduced to a system failure speed, the energy recovery system may fail, and then the automobile may roll forward for a distance. Alternatively, the vehicle in the embodiment may be a pure electric vehicle, or may also be a hybrid vehicle including an electric vehicle and fuel oil. The current running speed of the automobile can be detected through a speed measuring module arranged on the automobile.
Further, the system failure speed refers to the operation speed of the corresponding vehicle when the energy recovery system fails, that is, after the energy recovery system is started, when the operation speed of the vehicle is reduced to the system failure speed, the energy recovery system fails. Illustratively, the system failure speed may be 8km/h, or 10km/h, etc. The preset failure speed threshold may be set to 12km/h or the like.
S20: and when the current running speed reaches the preset failure speed threshold value, sending a starting instruction to a brake system of the automobile so as to enable the brake system to be started according to the starting instruction.
Specifically, after an energy recovery system of an automobile is started, the current running speed of the automobile is detected in real time, and after the current running speed is compared with a preset failure speed threshold value, if the current running speed of the automobile is reduced to the preset failure speed threshold value, it is represented that the energy recovery system of the automobile is likely to fail, and therefore a starting instruction is sent to a braking system of the automobile, so that the braking system is switched from a closed state to a starting state immediately after receiving the starting instruction. It is understood that in the embodiment, the brake system is triggered to start by sending a start command to the brake system of the automobile, rather than starting the brake system by the driver stepping on the brake pedal. Further, in this embodiment, since it takes a certain time to start the transmission of the command, although the time may be short, a preset failure speed threshold is set to assist in determining whether the energy recovery system is about to fail. Setting a predetermined failure speed threshold is only an example, and in addition, a start instruction may be sent to a braking system of the vehicle when the current operating speed of the vehicle reaches the system failure speed.
In an embodiment, as shown in fig. 2, in step S20, that is, when the current operating speed reaches the preset failure speed threshold, sending an activation instruction to a braking system of the automobile to enable the braking system to be activated according to the activation instruction includes:
s201: when the current running speed reaches the preset failure speed threshold value, acquiring the energy recovery efficiency of the energy recovery system;
it is understood that the energy recovery efficiency refers to the current efficiency of the energy recovery system corresponding to the current operating speed up to the preset failure speed threshold.
In an embodiment, before the step S201, that is, before the energy recovery efficiency of the energy recovery system is obtained, the method further includes:
acquiring a speed efficiency mapping curve; the speed efficiency mapping curve represents each energy recovery efficiency of the energy recovery system and the current running speed of the automobile corresponding to each recovery efficiency;
it can be understood that the speed efficiency mapping curve can test different operation speeds of the energy recovery system of the vehicle in advance, so as to obtain a speed efficiency mapping curve corresponding to the operation speeds of the energy recovery system and the vehicle. Further, in the speed efficiency mapping curve, as the current operating speed of the vehicle decreases, the energy recovery efficiency of the energy recovery system also decreases.
And when the current running speed reaches the preset failure speed threshold value, determining the energy recovery efficiency corresponding to the current running speed from the speed efficiency mapping curve.
Specifically, after the speed efficiency mapping curve is obtained, if it is detected that the current operating speed reaches the preset failure speed threshold, the energy recovery efficiency corresponding to the current operating speed is queried from the speed efficiency mapping curve.
S202: determining the starting output power of the braking system according to the energy recovery efficiency and the current running speed;
specifically, after the energy recovery efficiency of the energy recovery system is obtained, the starting output power of the braking system can be determined according to the energy recovery efficiency and the current operating speed. It can be understood that, in order to enable the automobile to still reduce the deceleration efficiency of the energy recovery system to 0 from the current operating speed after the braking system of the automobile is started, the energy recovery efficiency of the energy recovery system of the automobile and the starting output power of the braking system can be tested in advance, that is, the relationship among the energy recovery power, the current operating speed and the starting output power is determined, and then when the current operating speed of the automobile and the energy recovery efficiency corresponding to the current operating speed of the energy recovery system are determined, the starting output power of the braking system can be determined according to the current operating speed and the energy recovery efficiency; further, the starting output power is also reduced along with the reduction of the current operation speed, and further, the slope of the power speed curve of the brake system (i.e., the curve of the output power and the current operation speed of the vehicle) in this embodiment is the same as the slope of the speed efficiency mapping curve of the energy recovery system, and the current operation speed corresponding to the starting output power is the same as the current operation speed corresponding to the energy recovery efficiency in the step S201, so that after the brake system is started, the operation speed change of the vehicle is the same as the operation speed change when the energy recovery system is started, and further, the phenomenon that the vehicle is suddenly decelerated to zero after the brake system is started can be avoided, and the vehicle use experience of a user is improved.
S203: and sending a starting instruction containing the starting output power to a braking system of the automobile so as to start the braking system at the starting output power.
Specifically, after the starting output power of the braking system is determined according to the energy recovery efficiency and the current running speed, a starting instruction containing the starting output power is sent to the braking system of the automobile, so that the braking system is started at the starting output power and outputs braking force, and the automobile is reduced to zero from the current running speed after a period of time.
In an embodiment, after step S10, that is, after comparing the current operating speed with the preset failure speed threshold, the method further includes:
and when the current running speed does not reach the preset failure speed threshold value, keeping the energy recovery system in a starting state.
Specifically, after the energy recovery system of the automobile is started, the current running speed of the automobile is detected in real time, and after the current running speed is compared with a preset failure speed threshold value, if the current running speed does not reach the preset failure speed threshold value, that is, the current running speed representing the automobile is greater than the preset failure speed threshold value, at this moment, the energy recovery system of the automobile cannot fail temporarily, and therefore the energy recovery system is continuously kept in a starting state.
S30: and when the current running speed of the automobile is equal to zero, sending a closing instruction to a braking system of the automobile so as to enable the braking system to be closed according to the closing instruction.
Specifically, after a starting instruction is sent to the brake system of the automobile to enable the brake system to be started according to the starting instruction, the current running speed of the automobile is continuously reduced until the current running speed of the automobile is reduced to 0, a closing instruction is sent to the brake system of the automobile to enable the brake system to be closed according to the closing instruction.
In this embodiment, whether the energy recovery system of the vehicle is about to fail is determined by introducing a preset failure speed threshold, and then when the energy recovery system is likely to fail (that is, when the current running speed reaches the preset failure speed threshold), the braking system is started by sending a starting instruction to the braking system of the vehicle, so that the vehicle is prevented from automatically sliding forward for a certain distance when the energy recovery system fails, the vehicle using experience of a user is improved, and the safety of the vehicle in the running process is also improved.
In an embodiment, before step S10, that is, before the real-time detecting the current operating speed of the automobile, the method further includes:
acquiring the depth of a brake pedal of the automobile and the depth of an accelerator pedal of the accelerator pedal in the running process of the automobile;
the depth of the brake pedal is the height difference between the brake pedal and the initial position of the brake pedal when the brake pedal is stepped on by a driver; the accelerator pedal depth refers to a height difference between the accelerator pedal and an initial position of the accelerator pedal when the accelerator pedal is pressed by a driver, and the brake pedal depth and the accelerator pedal depth can be recorded in a percentage manner, for example, when the brake pedal depth is 90%, the height representing that the brake pedal is pressed by the driver is 90%.
When the accelerator pedal depth is smaller than a preset accelerator depth threshold value, comparing the brake pedal depth with a first preset depth threshold value and a second preset depth threshold value; the first preset depth threshold is smaller than the second preset depth threshold;
alternatively, the preset acceleration depth threshold may be set to 5%, 10%, etc., which is a height at which the accelerator pedal is depressed by 5% or 10%; the first preset depth threshold may be set to 5% or 10%, for example, and the first preset depth threshold is a height at which the brake pedal is depressed by 5% or 10%. The second preset depth threshold may be set to 80%, 90%, etc., which means that the brake pedal is depressed by 80% or 90%.
When the depth of the brake pedal is smaller than the first preset depth threshold value, the energy recovery system is kept in a non-starting state;
it can be understood that when the depth of the accelerator pedal is smaller than the preset acceleration depth threshold, it indicates that the vehicle is not currently in an acceleration state, and at this time, the driver may step on the brake pedal, so as to compare the obtained depth of the brake pedal with the first preset depth threshold and the second preset depth threshold; when the depth of the brake pedal is smaller than the first preset depth threshold value, the fact that a driver may touch the brake pedal carelessly in the process of driving the automobile is represented, and the depth change of the brake pedal is small at the moment, so that the energy recovery system does not need to be started to decelerate the automobile, namely the energy recovery system is kept in an un-started state.
And when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, enabling a brake system of the automobile to be in a closed state and starting an energy recovery system of the automobile.
It can be understood that when the depth of the accelerator pedal is smaller than the preset acceleration depth threshold, it indicates that the vehicle is not currently in an acceleration state, and at this time, the driver may step on the brake pedal, so as to compare the obtained depth of the brake pedal with the first preset depth threshold and the second preset depth threshold; when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, the depth of the brake pedal is greatly changed, but the brake system of the automobile is in a closed state and starts the energy recovery system of the automobile at the moment, namely the automobile is in a deceleration state at the moment, but the deceleration state is caused by starting the energy recovery system. Rather than actuating the braking system to slow the vehicle. Further, the efficiency of the energy recovery system changes with the change of the vehicle speed, that is, when the vehicle speed becomes smaller, the energy recovery system becomes smaller. Furthermore, after the energy recovery system of the automobile is started, the indicator lamp associated with the energy recovery system on the automobile is lightened, so that the automobile behind the automobile can be prompted, the automobile is in a deceleration state at present, and the running safety of the automobile is improved.
And when the depth of the brake pedal is greater than or equal to the second preset depth threshold value, starting a brake system of the automobile.
It can be understood that when the depth of the accelerator pedal is smaller than the preset acceleration depth threshold, it indicates that the vehicle is not currently in an acceleration state, and at this time, the driver may step on the brake pedal, so as to compare the obtained depth of the brake pedal with the first preset depth threshold and the second preset depth threshold; when the depth of the brake pedal is greater than the second preset depth threshold value, the characteristic that a driver possibly meets an emergency situation at the moment is shown, so that the brake pedal is stepped down, the depth of the brake pedal is greater than or equal to the second preset depth threshold value, a brake system of the automobile is directly started, and brake power is output through the brake system according to the depth of the brake pedal (the brake power is related to the depth of the brake pedal, and the larger the depth of the brake pedal is, the larger the brake power is), so that the automobile stops running in a shorter time under the action of the brake power.
In this embodiment, through the brake pedal degree of depth, the first degree of depth threshold value and the second degree of depth threshold value of presetting, energy recovery system and the braking system to the car control, make when the brake pedal degree of depth is greater than or equal to the first degree of depth threshold value of presetting, and be less than the second degree of depth threshold value of presetting, can directly start energy recovery system and slow down to the current operating speed of car, and when the brake pedal degree of depth is greater than or equal to the second degree of depth threshold value of presetting, make the car stop operation through starting braking system, make opening and closing of the braking state of car accord with driver's driving habit more, driver's experience is felt with the car, and automobile driving safety has been improved.
In an embodiment, when the depth of the brake pedal is greater than or equal to the first preset depth threshold and less than the second preset depth threshold, the method for turning off the brake system of the vehicle and starting the energy recovery system of the vehicle includes:
when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, enabling a brake system of the automobile to be in a closed state and obtaining the pedal descending rate of the brake pedal;
it is to be understood that the pedal depression rate of the brake pedal, that is, the depression rate at which the driver depresses the brake pedal, may be detected by a speed sensor or the like.
And determining the initial recovery efficiency of the energy recovery system according to the pedal descending rate, and starting the energy recovery system of the automobile at the initial recovery efficiency.
It is understood that the initial recovery efficiency of the energy recovery system is the same as the pedal depression rate, and the faster the pedal depression rate, the higher the initial recovery efficiency of the energy recovery system.
Specifically, when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, at this time, the brake system of the vehicle is in the off state, and the pedal depression rate of the brake pedal is acquired, and as can be understood, when the depth of the brake pedal is detected to be greater than or equal to a first preset depth threshold value and less than a second preset depth threshold value, the speed detection device arranged on the automobile can also acquire the pedal descending speed of the brake pedal in real time, further determining the initial recovery efficiency of the energy recovery system according to the pedal lowering rate, and starting the energy recovery system of the automobile with the initial recovery efficiency, and as the energy recovery system operates, the speed of the vehicle decreases, and as the speed of the vehicle decreases, the recovery efficiency of the energy recovery system is reduced, i.e. the initial recovery efficiency is the maximum recovery efficiency of the energy recovery system at the time of starting.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In an embodiment, a failure processing device for an electric vehicle energy recovery system is provided, and the failure processing device for the electric vehicle energy recovery system corresponds to the failure processing method for the electric vehicle energy recovery system in the above embodiment one by one. As shown in fig. 3, the electric vehicle energy recovery system failure processing device includes an operation speed detection module 10, a braking system starting module 20 and a braking system closing module 30. The functional modules are explained in detail as follows:
the system comprises an operation speed detection module 10, a failure detection module and a failure detection module, wherein the operation speed detection module is used for detecting the current operation speed of an automobile in real time after an energy recovery system of the automobile is started, and comparing the current operation speed with a preset failure speed threshold; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails;
the braking system starting module 20 is configured to send a starting instruction to a braking system of the automobile when the current operating speed reaches the preset failure speed threshold value, so that the braking system is started according to the starting instruction;
and the braking system closing module 30 is configured to send a closing instruction to the braking system of the automobile when the current operating speed of the automobile is equal to zero, so that the braking system is closed according to the closing instruction.
In one embodiment, as shown in fig. 4, the braking system activation module 20 includes:
an energy recovery efficiency obtaining unit 201, configured to obtain energy recovery efficiency of the energy recovery system when the current operating speed reaches the preset failure speed threshold;
a start output power determining unit 202, configured to determine a start output power of the braking system according to the energy recovery efficiency and the current operating speed;
and a braking system starting unit 203, configured to send a starting instruction including the starting output power to a braking system of the automobile, so as to start the braking system with the starting output power.
In one embodiment, the braking system activation module 20 includes:
a curve acquisition unit for acquiring a speed efficiency mapping curve; the speed efficiency mapping curve represents each energy recovery efficiency of the energy recovery system and the current running speed of the automobile corresponding to each recovery efficiency;
and the energy recovery efficiency determining unit is used for determining the energy recovery efficiency corresponding to the current running speed from the speed efficiency mapping curve when the current running speed reaches the preset failure speed threshold.
In one embodiment, the electric vehicle energy recovery system failure processing device further includes:
and the energy recovery system control module is used for keeping the energy recovery system in a starting state when the current running speed does not reach the preset failure speed threshold value.
In one embodiment, the electric vehicle energy recovery system failure processing device further includes:
the pedal depth acquisition module is used for acquiring the brake pedal depth of a brake pedal and the accelerator pedal depth of an accelerator pedal of the automobile in the running process of the automobile;
the pedal depth comparison module is used for comparing the depth of the brake pedal with a first preset depth threshold value and a second preset depth threshold value when the depth of the accelerator pedal is smaller than a preset acceleration depth threshold value; the first preset depth threshold is smaller than the second preset depth threshold;
the first judgment module is used for keeping the energy recovery system in a non-starting state when the depth of the brake pedal is smaller than the first preset depth threshold value;
and the second judgment module is used for enabling the braking system of the automobile to be in a closed state and starting the energy recovery system of the automobile when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and is less than the second preset depth threshold value.
In one embodiment, the second determining module includes:
the pedal descending rate acquiring unit is used for enabling a brake system of the automobile to be in a closed state and acquiring the pedal descending rate of the brake pedal when the depth of the brake pedal is greater than or equal to the first preset depth threshold and is less than the second preset depth threshold;
and the initial recovery efficiency determining unit is used for determining the initial recovery efficiency of the energy recovery system according to the pedal descending rate and enabling the energy recovery system of the automobile to be started at the initial recovery efficiency.
For specific limitations of the electric vehicle energy recovery system failure processing device, reference may be made to the above limitations of the electric vehicle energy recovery system failure processing method, and details thereof are not repeated here. All or part of each module in the electric vehicle energy recovery system failure processing device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, an automobile is provided, comprising an energy recovery system, a braking system, and a controller in communication with the energy recovery system and the braking system; the controller is used for executing the failure processing method of the energy recovery system of the electric automobile in the embodiment.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing the data used by the failure processing method of the energy recovery system of the electric vehicle in the embodiment. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a failure processing method of the energy recovery system of the electric automobile.
In one embodiment, a computer device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method for processing the failure of the energy recovery system of the electric vehicle in the above embodiments is implemented.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed by a processor to implement the method for processing the failure of the energy recovery system of the electric vehicle in the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. The failure processing method of the energy recovery system of the electric automobile is characterized by comprising the following steps:
after an energy recovery system of an automobile is started, detecting the current running speed of the automobile in real time, and comparing the current running speed with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails;
when the current running speed reaches the preset failure speed threshold value, sending a starting instruction to a brake system of the automobile so as to enable the brake system to be started according to the starting instruction;
and when the current running speed of the automobile is equal to zero, sending a closing instruction to a braking system of the automobile so as to enable the braking system to be closed according to the closing instruction.
2. The method for handling the failure of the energy recovery system of the electric vehicle according to claim 1, wherein the step of sending a start instruction to a braking system of the vehicle when the current operating speed reaches the preset failure speed threshold value so as to enable the braking system to start according to the start instruction comprises the steps of:
when the current running speed reaches the preset failure speed threshold value, acquiring the energy recovery efficiency of the energy recovery system;
determining the starting output power of the braking system according to the energy recovery efficiency and the current running speed;
and sending a starting instruction containing the starting output power to a braking system of the automobile so as to start the braking system at the starting output power.
3. The method for handling the failure of the energy recovery system of the electric vehicle according to claim 2, wherein before obtaining the energy recovery efficiency of the energy recovery system, the method comprises:
acquiring a speed efficiency mapping curve; the speed efficiency mapping curve represents each energy recovery efficiency of the energy recovery system and the current running speed of the automobile corresponding to each recovery efficiency;
and when the current running speed reaches the preset failure speed threshold value, determining the energy recovery efficiency corresponding to the current running speed from the speed efficiency mapping curve.
4. The method for handling the failure of the energy recovery system of the electric vehicle according to claim 1, wherein after comparing the current operating speed with a preset failure speed threshold, the method further comprises:
and when the current running speed does not reach the preset failure speed threshold value, keeping the energy recovery system in a starting state.
5. The method for handling the failure of the energy recovery system of the electric vehicle according to claim 1, wherein before the real-time detection of the current running speed of the vehicle, the method further comprises:
acquiring the depth of a brake pedal of the automobile and the depth of an accelerator pedal of the accelerator pedal in the running process of the automobile;
when the accelerator pedal depth is smaller than a preset accelerator depth threshold value, comparing the brake pedal depth with a first preset depth threshold value and a second preset depth threshold value; the first preset depth threshold is smaller than the second preset depth threshold;
when the depth of the brake pedal is smaller than the first preset depth threshold value, the energy recovery system is kept in a non-starting state;
and when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, enabling a brake system of the automobile to be in a closed state and starting an energy recovery system of the automobile.
6. The method for handling the failure of the electric vehicle energy recovery system according to claim 5, wherein when the depth of the brake pedal is greater than or equal to the first preset depth threshold and less than the second preset depth threshold, the method for turning off the brake system of the vehicle and starting the energy recovery system of the vehicle comprises:
when the depth of the brake pedal is greater than or equal to the first preset depth threshold value and less than the second preset depth threshold value, enabling a brake system of the automobile to be in a closed state and obtaining the pedal descending rate of the brake pedal;
and determining the initial recovery efficiency of the energy recovery system according to the pedal descending rate, and starting the energy recovery system of the automobile at the initial recovery efficiency.
7. The utility model provides an electric automobile energy recovery system failure processing apparatus which characterized in that includes:
the running speed detection module is used for detecting the current running speed of the automobile in real time after an energy recovery system of the automobile is started, and comparing the current running speed with a preset failure speed threshold value; the preset failure speed threshold value is greater than or equal to the system failure speed; the system failure speed refers to the running speed of the corresponding automobile when the energy recovery system fails;
the brake system starting module is used for sending a starting instruction to a brake system of the automobile when the current running speed reaches the preset failure speed threshold value so as to enable the brake system to be started according to the starting instruction;
and the braking system closing module is used for sending a closing instruction to the braking system of the automobile when the current running speed of the automobile is equal to zero so as to enable the braking system to be closed according to the closing instruction.
8. The failure handling device of the energy recovery system of an electric vehicle of claim 7, wherein the braking system starting module comprises:
the energy recovery efficiency obtaining unit is used for obtaining the energy recovery efficiency of the energy recovery system when the current running speed reaches the preset failure speed threshold;
the starting output power determining unit is used for determining the starting output power of the braking system according to the energy recovery efficiency and the current running speed;
and the braking system starting unit is used for sending a starting instruction containing the starting output power to a braking system of the automobile so as to start the braking system by the starting output power.
9. An automobile is characterized by comprising an energy recovery system, a braking system and a controller which is in communication connection with the energy recovery system and the braking system; the controller is used for executing the failure processing method of the energy recovery system of the electric automobile according to any one of claims 1 to 6.
10. A computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the method for handling the failure of the electric vehicle energy recovery system according to any one of claims 1 to 6.
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