CN113173075A - New energy automobile, energy feedback control method, device and medium - Google Patents
New energy automobile, energy feedback control method, device and medium Download PDFInfo
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- CN113173075A CN113173075A CN202110548607.3A CN202110548607A CN113173075A CN 113173075 A CN113173075 A CN 113173075A CN 202110548607 A CN202110548607 A CN 202110548607A CN 113173075 A CN113173075 A CN 113173075A
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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
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention discloses a new energy automobile, an energy feedback control method, an energy feedback control device and a medium, wherein the energy feedback control method of the new energy automobile comprises the steps of obtaining the current working mode of the automobile; when the vehicle is in a braking mode, acquiring a braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to the road condition of the vehicle; acquiring a feedback torque value according to the energy feedback grade; and driving the motor to feed back energy according to the feedback torque value. According to the invention, different braking energy feedback levels are obtained, different braking feedback torques are given, more potential energy of the vehicle is converted into electric energy of the power battery under the mountain working condition, the probability of locking and slipping of wheels is reduced to the maximum extent under the wet and slippery working condition, so that energy recovery under different road conditions is realized, and the driving comfort of a driver under the common working condition is considered.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile, an energy feedback control method, an energy feedback control device and an energy feedback control medium.
Background
Aiming at energy feedback, a new energy automobile generally distributes feedback torque according to a certain proportion according to the conditions of factors such as an accelerator pedal, a gear, a vehicle speed and a brake pedal in the driving process, and all working conditions are responded by the method.
The single control mode has certain defects, and under some special working conditions, the advantage of energy feedback cannot be maximized, and even some unexpected potential safety hazards can be caused, mainly as follows:
1) if the mountain road conditions exist, the advantages of mountain potential energy cannot be utilized to the maximum extent, and more mountain potential energy is converted into electric energy of the power battery;
2) for example, in a wet slipping working condition in winter, excessive feedback torque may cause wheels to be locked and slip, so that a driver loses control over the vehicle, and even the possibility of tail flicking occurs, thereby threatening the safety of the driver.
Disclosure of Invention
The invention mainly aims to provide an energy feedback control method for a new energy automobile, and aims to solve the technical problem that the new energy automobile cannot recover different energy according to road conditions in the prior art.
In order to achieve the above object, the invention provides a new energy automobile energy feedback control method, which includes the following steps:
acquiring a current working mode of a vehicle;
when the vehicle is in a braking mode, acquiring a braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to the road condition of the vehicle;
acquiring a feedback torque value according to the braking energy feedback grade;
and driving the motor to feed back energy according to the feedback torque value.
Preferably, the step of acquiring the current operating mode of the vehicle comprises:
acquiring accelerator pedal and gear information of the vehicle;
when an accelerator pedal is on and a gear is D or S, acquiring that the current working mode of the vehicle is a braking mode;
and when the accelerator pedal is off and/or the gear is not D or S, acquiring that the current working mode of the vehicle is a non-braking mode.
Preferably, the step of acquiring a braking energy feedback level of the vehicle further comprises:
acquiring vehicle running state parameters;
judging the current running road condition of the vehicle according to the vehicle running state parameters;
and selecting a corresponding braking energy feedback grade according to the current running road condition of the vehicle.
Preferably, the step of obtaining the feedback torque value according to the energy feedback level further comprises:
acquiring a starting condition of feedback torque of the vehicle;
and judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque.
Preferably, the step of judging whether energy feedback can be started according to the limited condition of the feedback torque comprises the following steps:
acquiring the current speed of the vehicle;
comparing the current vehicle speed with a preset vehicle speed;
when the current speed of the vehicle is less than the preset speed, starting energy feedback;
and when the current speed of the vehicle is greater than or equal to the preset speed, energy feedback is not started.
Preferably, the step of determining whether energy feedback can be started according to the limited condition of the feedback torque further comprises:
acquiring the current residual capacity of the vehicle;
comparing the current residual electric quantity with a preset electric quantity;
when the current residual electric quantity of the vehicle is larger than the preset electric quantity, starting energy feedback;
and when the current remaining electric quantity of the vehicle is less than or equal to the preset electric quantity, not starting energy feedback.
Preferably, the step of determining whether energy feedback can be started according to the limited condition of the feedback torque further comprises:
respectively acquiring the depth of an accelerator pedal and the depth of a brake pedal;
when the depth of the brake pedal is larger than a first preset depth and an anti-lock brake system of the vehicle is in a non-working state, starting energy feedback;
and when the depth of the brake pedal is a first preset depth, the depth of the accelerator pedal is smaller than a second preset depth, and an anti-lock brake system of the vehicle is in a non-working state, energy feedback is not started.
The invention further provides a new energy automobile, and the new energy automobile executes the steps of the new energy automobile energy feedback control method.
Further, the invention also provides a new energy automobile energy feedback control device, which comprises: the energy feedback control method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the computer program is executed by the processor, the steps of the energy feedback control method for the new energy automobile are realized.
Finally, the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a new energy automobile energy feedback control program, and the new energy automobile energy feedback control program realizes the steps of the new energy automobile energy feedback control method when being executed by a processor.
According to the technical scheme, when the vehicle is in a braking mode, the braking energy feedback grade of the vehicle is acquired, and the braking energy feedback grade corresponds to the road condition of the vehicle one to one; acquiring a feedback torque value according to the energy feedback grade; and driving the motor to feed back energy according to the feedback torque value. According to the invention, different braking energy feedback levels are obtained, different braking feedback torques are given, more potential energy of the vehicle is converted into electric energy of the power battery under the mountain working condition, the probability of locking and slipping of wheels is reduced to the maximum extent under the wet and slippery working condition, so that energy recovery under different road conditions is realized, and the driving comfort of a driver under the common working condition is considered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a terminal architecture of a hardware operating environment to which aspects of the present invention relate;
fig. 2 is a schematic flow chart illustrating a new energy vehicle energy feedback control method according to a first embodiment of the present invention;
FIG. 3 is a detailed flowchart illustrating the steps of obtaining the current operating mode of the vehicle according to an embodiment of the present invention;
FIG. 4 is a detailed flowchart of the step of obtaining the braking energy feedback level of the vehicle according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a refinement process before the step of obtaining the feedback torque value according to the energy feedback level according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a detailed process of determining whether energy feedback can be enabled according to a constraint condition of feedback torque according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart illustrating another exemplary step of determining whether energy feedback can be enabled according to a constraint condition of feedback torque according to an embodiment of the present invention;
fig. 8 is a schematic flow chart illustrating another step of determining whether energy feedback can be activated according to a limited condition of feedback torque according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal structure of the embodiment of the invention can be an electric automobile or a hybrid automobile and other terminal equipment.
As shown in fig. 1, the terminal structure may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a computer storage medium, may include an operating system, a network communication module, a user interface module, and a new energy vehicle energy feedback control application program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; the processor 1001 may be configured to call a new energy vehicle energy feedback control program stored in the memory 1005, and execute a new energy vehicle energy feedback control method, where the method includes:
acquiring a current working mode of a vehicle;
when the vehicle is in a braking mode, acquiring a braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to the road condition of the vehicle;
acquiring a feedback torque value according to the braking energy feedback grade;
and driving the motor to feed back energy according to the feedback torque value.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
acquiring accelerator pedal and gear information of the vehicle;
when an accelerator pedal is on and a gear is D or S, acquiring that the current working mode of the vehicle is a braking mode;
and when the accelerator pedal is off and/or the gear is not D or S, acquiring that the current working mode of the vehicle is a non-braking mode.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
acquiring vehicle running state parameters;
judging the current running road condition of the vehicle according to the vehicle running state parameters;
and selecting a corresponding braking energy feedback grade according to the current running road condition of the vehicle.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
acquiring a starting condition of feedback torque of the vehicle;
and judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
acquiring the current speed of the vehicle;
comparing the current vehicle speed with a preset vehicle speed;
when the current speed of the vehicle is greater than the preset speed, starting energy feedback;
and when the current speed of the vehicle is less than or equal to the preset speed, energy feedback is not started.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
acquiring the current residual capacity of the vehicle;
comparing the current residual electric quantity with a preset electric quantity;
when the current residual electric quantity of the vehicle is smaller than the preset electric quantity, starting energy feedback;
and when the current remaining electric quantity of the vehicle is greater than or equal to the preset electric quantity, not starting energy feedback.
Further, the processor 1001 may call the new energy vehicle energy feedback control program stored in the memory 1005, and further perform the following operations:
respectively acquiring the depth of an accelerator pedal and the depth of a brake pedal;
when the depth of the brake pedal is larger than a first preset depth and an anti-lock brake system of the vehicle is in a non-working state, performing energy feedback;
and when the depth of the brake pedal is a first preset depth, the depth of the accelerator pedal is smaller than a second preset depth, and an anti-lock brake system of the vehicle is in a non-working state, energy feedback is not started.
The specific embodiment of the new energy vehicle of the present invention is substantially the same as the following embodiments of the new energy vehicle energy feedback control method, and is not described herein again.
Referring to fig. 2, a first embodiment of the present invention provides a new energy vehicle energy feedback control method, where the new energy vehicle energy feedback control method includes:
step S10, acquiring the current working mode of the vehicle;
when the vehicle runs on the road surface, the vehicle has a plurality of working modes, for example, when a driver steps on an accelerator pedal to move forward, the vehicle is in a non-braking working mode; when the driver steps on the brake by feet or waits for a red light, the vehicle is in a brake working mode at the moment. When the vehicle runs, a sensor on the vehicle detects the state of the vehicle in real time, and analyzes and acquires the current working mode of the vehicle according to the detected state.
Step S20, when the vehicle is in a braking mode, acquiring the braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to the road condition of the vehicle;
when the braking energy feedback grade of the vehicle is obtained, people can manually select the corresponding energy feedback grade under different road conditions; in other embodiments, an image acquisition device for photographing and an image analysis device for image analysis may be installed on the new energy automobile to acquire the road condition of the vehicle in real time and transmit the road condition to the corresponding image analysis device, and the image analysis device analyzes the acquired images to match different energy feedback levels. The braking energy feedback grade is divided into a high grade, a medium grade and a low grade (which can correspond to mountain working conditions, common working conditions and wet and slippery working conditions). When the vehicle runs under the mountain road condition, the vehicle can utilize the potential energy of the mountain land to convert more potential energy into the electric energy of the power battery, so that the brake energy feedback grade at the moment is highest; when the vehicle is driven under a wet and slippery road condition, because wheels have the risk of skidding and locking, corresponding energy feedback needs to be reduced so as to reduce the probability of vehicle locking and skidding to the maximum extent, and the braking energy feedback grade is lowest.
Step S30, acquiring a feedback torque value according to the braking energy feedback grade;
when the energy feedback is available, the higher the braking energy feedback level is, the higher the feedback torque is, the more the energy is recovered, and vice versa, the less the energy is. The feedback torque refers to the inertia of braking, and the larger the auxiliary torque of the motor is, the higher the feedback torque is.
And step S40, driving the motor to perform energy feedback according to the feedback torque value.
When the feedback torque value is higher, the auxiliary torque of the motor is larger, so that the energy feedback to the battery is more, and the energy can be saved; therefore, when the battery provides power for the vehicle, a part of energy is derived from the battery and the feedback energy, and the insufficient part can be provided by the engine so as to ensure that the vehicle normally runs under the mountain road condition.
According to the energy feedback control method for the new energy automobile in the embodiment, different braking feedback torques are given by acquiring different braking energy feedback levels, the condition that the vehicle converts more potential energy into electric energy of a power battery under a mountain working condition is met, the probability of locking and slipping of wheels is reduced to the maximum extent under a wet slipping working condition, so that energy recovery under different road conditions is realized, and meanwhile, the driving comfort of a driver under a common working condition is considered.
Further, referring to fig. 3, a second embodiment of the present invention provides a new energy vehicle energy feedback control method, based on the first embodiment shown in fig. 2, the step S10 further includes:
step S11: acquiring accelerator pedal and gear information of the vehicle;
in actual operation, in order to determine whether the vehicle is in the braking mode, it is necessary to determine the running mode of the vehicle from the accelerator pedal and the gear information of the vehicle. When the accelerator pedal and the gear information of the vehicle are obtained, the information can be determined according to the condition selected automatically by a driver, and the working mode of the vehicle can also be determined according to the condition that a controller on the vehicle automatically identifies the accelerator pedal and the gear.
Step S12: when an accelerator pedal is on and a gear is D or S, acquiring that the current working mode of the vehicle is a braking mode;
step S13: and when the accelerator pedal is off and/or the gear is not D or S, acquiring that the current working mode of the vehicle is a non-braking mode.
When the accelerator pedal is on (here, "accelerator pedal on" refers to a condition where the driver depresses the accelerator pedal), and the shift position is D or S, it is described that the vehicle is on and the vehicle is in the braking mode. When the accelerator pedal is off (here, "accelerator pedal off" refers to a case where the driver does not depress the accelerator pedal), the shift position is not D or S or the shift position is D or S, and at this time, the vehicle is in a non-braking mode, that is, the vehicle may be in a state of accelerating or running at a constant speed, or the vehicle is not turned on. The judgment method is more accurate, and provides certain information support for whether to start energy feedback subsequently.
Further, referring to fig. 4, a third embodiment of the present invention provides a new energy vehicle energy feedback control method, based on the first embodiment shown in fig. 2, where the step S20 includes:
step S21: acquiring vehicle running state parameters;
when the road operation condition is judged, the current road operation condition can be obtained according to the running state parameters of the vehicle; the road condition can also be obtained according to the running state parameters selected by the driver. The current operating state of the vehicle includes information such as temperature, current, or voltage of the motor generator, and the operating parameters of the vehicle may be acquired according to the driving mode selected by the driver.
Step S22: judging the current running road condition of the vehicle according to the vehicle running state parameters;
when the potential energy of the vehicle is detected to be larger and larger, or the energy required by the vehicle to advance is more and more, the condition that the vehicle is in the mountain road condition at the moment can be judged; when the fact that the vehicle is easy to slip during running or under the action of the same driving force is detected, the wheel speed is very low, and therefore the vehicle can be judged to be in a wet road condition at the moment.
Step S23: and selecting a corresponding braking energy feedback grade according to the current running road condition of the vehicle.
After the vehicle acquires the current running road condition, the driver can select the braking energy feedback grade corresponding to the current running road condition by himself or the vehicle controller can select the corresponding braking energy feedback grade by himself after the vehicle controller identifies the driving mode selected by the driver.
In the embodiment, the current running parameters of the vehicle are obtained to obtain the current running road condition of the vehicle, and the corresponding braking energy feedback grade is selected according to the current road condition, so that the energy can be recovered to the maximum extent.
Further, referring to fig. 5, a fourth embodiment of the invention provides a new energy vehicle energy feedback control method, based on the first embodiment shown in fig. 2, before the step S30, the method further includes:
step S31: acquiring a starting condition of feedback torque of the vehicle;
in the running process of the vehicle, energy feedback can not be carried out under all conditions, and the vehicle can start the energy feedback only when certain limiting conditions are met. For example, when the vehicle speed is slow or the battery is low, the vehicle can only guarantee the energy required by the vehicle to run, and therefore energy feedback cannot be performed on the battery. Namely, in the running process of the vehicle, whether the running parameters of the vehicle meet the starting condition of the feedback torque is judged at the same time so as to determine whether energy feedback is carried out.
Step S32: and judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque.
The limit condition of the feedback torque may be a vehicle speed of the vehicle, an electric quantity of the battery, and the like. When the vehicle meets the limited condition of feedback torque, the vehicle starts an energy feedback mode, and energy feedback is carried out according to different energy feedback grades when the vehicle runs under different road conditions; when the vehicle does not meet the limited condition of the feedback torque, the vehicle does not start energy feedback, and the vehicle runs by adopting a traditional braking mode, such as completely adopting an engine for power supply, and under the condition that the vehicle does not feed back energy.
The embodiment simultaneously obtains the parameter information of the vehicle and compares the parameter information with the starting condition of the feedback torque in the driving process of the vehicle to judge whether the vehicle starts energy feedback, so that the vehicle can be prevented from being damaged to a certain extent under the condition of energy feedback due to too low vehicle speed or too low electric quantity, and the service life of the vehicle is further prolonged.
Further, referring to fig. 6, a fifth embodiment of the present invention provides a new energy automobile energy feedback control method, based on the fourth embodiment shown in fig. 5, where the step S32 includes:
step S320: acquiring the current speed of the vehicle, and comparing the current speed with a preset speed;
when judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque, in one embodiment, the current vehicle speed of the vehicle can be obtained in real time, and the current vehicle speed is compared with the preset vehicle speed in the vehicle, so that whether the vehicle needs to start energy feedback is determined according to the comparison relationship between the current vehicle speed and the preset vehicle speed. The current vehicle speed of the vehicle can be obtained through a numerical value on an instrument panel, or the current vehicle speed of the advancing wheels can be automatically detected through a sensor.
Step S321: when the current speed of the vehicle is greater than the preset speed, starting energy feedback;
when the sensor detects that the current speed of the vehicle is greater than the preset speed, the engine provides enough energy for the vehicle, the torque of the motor is larger, the feedback torque is higher, the sensor transmits the detected analysis result to a controller on the vehicle, and the controller controls the vehicle to start an energy feedback mode so as to recycle part of energy for supplying energy to the battery. The preset vehicle speed can be 10-15 Km/h, and of course, the preset vehicle speed can also be set by a driver according to actual conditions.
Step S322: and when the current speed of the vehicle is less than or equal to the preset speed, energy feedback is not started.
When the vehicle speed is too small, especially when the current vehicle speed of the vehicle indicates that the vehicle is about to be in a static state or a state with low energy, the vehicle cannot recover the redundant energy to the battery at the moment, so that the requirement on the forward driving force of the vehicle is met, and energy feedback is not required to be started.
This embodiment is through the current speed of a motor vehicle of going according to the vehicle and predetermine the speed of a motor vehicle and compare and judge whether open the energy repayment, can retrieve the energy under each road conditions, and the energy saving avoids the energy waste, and can not carry out energy recuperation and damage the vehicle when crossing because of the speed of a motor vehicle is low yet.
Further, as shown in fig. 7, a sixth embodiment of the invention provides a new energy vehicle energy feedback control method, based on the fourth embodiment shown in fig. 5, where the step S32 includes:
step S323: acquiring the current residual capacity of the vehicle;
step S324: comparing the current residual electric quantity with a preset electric quantity;
when judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque, in another embodiment, the current remaining capacity of a battery on the vehicle can be obtained in real time, and the current remaining capacity is compared with the preset capacity value, so that whether the vehicle needs to start energy feedback is determined according to the comparison relationship between the current remaining capacity and the preset capacity. The current electric quantity of the vehicle can be obtained by determining a value on an instrument panel, or the current remaining electric quantity of the battery can be automatically detected through a sensor.
Step S325: when the current residual electric quantity of the vehicle is smaller than the preset electric quantity, starting energy feedback;
when the current residual capacity of the vehicle is small, the residual capacity of the battery cannot meet the running energy requirement of the vehicle, so that the driving force of the motor can convert a part of torque into feedback torque to recover the energy of the motor and provide a part of energy for the battery of the vehicle, and the battery is prevented from being damaged due to the fact that the electric quantity is too low. The preset electric quantity is 10% -20%, and can be set according to actual conditions or different vehicle types in the actual vehicle running process.
Step S326: and when the current remaining electric quantity of the vehicle is greater than or equal to the preset electric quantity, not starting energy feedback.
When the current residual capacity of the battery is detected to be large, the situation shows that the vehicle can be driven by the battery and the motor at the same time, and the battery has enough energy, so that energy does not need to be recovered to provide energy for the battery at the moment.
This embodiment is through the current residual capacity according to the vehicle with predetermine the electric quantity and compare and judge whether open the energy repayment to prevent that the electric quantity of battery from leading to the battery to damage when crossing excessively, and the energy of recovery motor that can furthest, the energy saving avoids the energy waste.
Further, as shown in fig. 8, a seventh embodiment of the invention provides a new energy vehicle energy feedback control method, based on the fourth embodiment shown in fig. 5, where the step S32 includes:
step S327: respectively acquiring the depth of an accelerator pedal and the depth of a brake pedal;
in the case where it is determined whether the vehicle can start the energy feedback according to the limit condition of the feedback torque, in another embodiment, it may be determined whether the vehicle is to start the energy feedback by acquiring the depths of the accelerator pedal and the brake pedal to determine the driving state of the vehicle.
Step S328: when the depth of the brake pedal is larger than a first preset depth and an anti-lock brake system of the vehicle is in a non-working state, starting energy feedback;
wherein the first preset depth is 0; when the depth of the brake pedal is greater than 0, the situation that the driver has stepped on the brake pedal to brake the vehicle at the moment is shown, namely the vehicle is in a braking state, and an anti-lock system of the vehicle is not in a working state, the vehicle is in a mountain road condition or a common road condition at the moment, the braking energy feedback grade is higher, and more energy can be recovered, so that the controller controls the vehicle to start energy feedback so as to improve the driving comfort of the driver.
Step S329: and when the depth of the brake pedal is a first preset depth, the depth of the accelerator pedal is smaller than a second preset depth, and an anti-lock brake system of the vehicle is in a non-working state, energy feedback is not started.
When the depth of the brake pedal is 0, the depth of the accelerator pedal is large, and an anti-lock braking system of the vehicle is not in an operating state, the situation shows that the driver drives the vehicle to move forward at the moment, and the vehicle is not in a braking operating mode, so that the energy of the engine is completely supplied for the vehicle to run at the moment, and the energy feedback mode is not started. Wherein, the second preset depth is 0-10 cm, and can also be set according to the actual situation.
This embodiment is through the degree of depth that obtains accelerator pedal and brake pedal, with corresponding preset degree of depth comparison to whether anti-lock braking system according to the vehicle is in operating condition, thereby whether come the control vehicle to open the energy repayment, this kind of judgement mode is convenient simple more, the better energy recovery that carries on, improve driver's experience and feel, and promote the performance quality of vehicle, satisfy customer's inherent demand.
Based on the above embodiment, the new energy vehicle energy feedback control device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the computer program is executed by the processor to implement the steps of the new energy vehicle energy feedback control method.
In addition, the invention also provides a computer readable storage medium, where a new energy vehicle energy feedback control program is stored on the computer readable storage medium, and when executed by a processor, the new energy vehicle energy feedback control program implements the following operations:
acquiring a current working mode of a vehicle;
when the vehicle is in a braking mode, acquiring a braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to the road condition of the vehicle;
acquiring a feedback torque value according to the braking energy feedback grade;
and driving the motor to feed back energy according to the feedback torque value.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
acquiring accelerator pedal and gear information of the vehicle;
when an accelerator pedal is on and a gear is D or S, acquiring that the current working mode of the vehicle is a braking mode;
and when the accelerator pedal is off and/or the gear is not D or S, acquiring that the current working mode of the vehicle is a non-braking mode.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
acquiring vehicle running state parameters;
judging the current running road condition of the vehicle according to the vehicle running state parameters;
and selecting a corresponding braking energy feedback grade according to the current running road condition of the vehicle.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
acquiring a starting condition of feedback torque of the vehicle;
and judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
acquiring the current speed of the vehicle;
comparing the current vehicle speed with a preset vehicle speed;
when the current speed of the vehicle is greater than the preset speed, starting energy feedback;
and when the current speed of the vehicle is less than or equal to the preset speed, energy feedback is not started.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
acquiring the current residual capacity of the vehicle;
comparing the current residual electric quantity with a preset electric quantity;
when the current residual electric quantity of the vehicle is smaller than the preset electric quantity, starting energy feedback;
and when the current remaining electric quantity of the vehicle is greater than or equal to the preset electric quantity, not starting energy feedback.
Further, when the new energy automobile energy feedback control program is executed by the processor, the following operations are also realized:
respectively acquiring the depth of an accelerator pedal and the depth of a brake pedal;
when the depth of the brake pedal is larger than a first preset depth and an anti-lock brake system of the vehicle is in a non-working state, starting energy feedback;
and when the depth of the brake pedal is a first preset depth, the depth of the accelerator pedal is smaller than a second preset depth, and an anti-lock brake system of the vehicle is in a non-working state, energy feedback is not started.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the application software security vulnerability detection method, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a new energy vehicle, etc.) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The new energy automobile energy feedback control method is characterized by comprising the following steps:
acquiring a current working mode of a vehicle;
when the vehicle is in a braking mode, acquiring a braking energy feedback grade of the vehicle, wherein the braking energy feedback grade corresponds to a road condition where the vehicle is located;
acquiring a feedback torque value according to the braking energy feedback grade;
and driving the motor to feed back energy according to the feedback torque value.
2. The new energy automobile energy feedback control method as claimed in claim 1, wherein the step of acquiring the current operating mode of the vehicle comprises:
acquiring accelerator pedal and gear information of the vehicle;
when an accelerator pedal is on and a gear is D or S, acquiring that the current working mode of the vehicle is a braking mode;
and when the accelerator pedal is off and/or the gear is not D or S, acquiring that the current working mode of the vehicle is a non-braking mode.
3. The new energy automobile energy feedback control method as claimed in claim 1, wherein the step of acquiring the braking energy feedback level of the vehicle further comprises:
acquiring vehicle running state parameters;
judging the current running road condition of the vehicle according to the vehicle running state parameters;
and selecting a corresponding braking energy feedback grade according to the current running road condition of the vehicle.
4. The energy feedback control method of claim 1, wherein the step of obtaining the feedback torque value according to the energy feedback level further comprises:
acquiring a starting condition of feedback torque of the vehicle;
and judging whether the vehicle can start energy feedback according to the limited condition of the feedback torque.
5. The new energy automobile energy feedback control method as claimed in claim 4, wherein the step of judging whether energy feedback can be started according to the limited condition of the feedback torque comprises the following steps:
acquiring the current speed of the vehicle;
comparing the current vehicle speed with a preset vehicle speed;
when the current speed of the vehicle is greater than the preset speed, starting energy feedback;
and when the current speed of the vehicle is less than or equal to the preset speed, energy feedback is not started.
6. The new energy vehicle energy feedback control method according to claim 4, wherein the step of judging whether energy feedback can be started according to the limited condition of the feedback torque further comprises the steps of:
acquiring the current residual capacity of the vehicle;
comparing the current residual electric quantity with a preset electric quantity;
when the current residual electric quantity of the vehicle is smaller than the preset electric quantity, starting energy feedback;
and when the current remaining electric quantity of the vehicle is greater than or equal to the preset electric quantity, not starting energy feedback.
7. The new energy vehicle energy feedback control method according to claim 4, wherein the step of judging whether energy feedback can be started according to the limited condition of the feedback torque further comprises the steps of:
respectively acquiring the depth of an accelerator pedal and the depth of a brake pedal;
when the depth of the brake pedal is larger than a first preset depth and an anti-lock brake system of the vehicle is in a non-working state, starting energy feedback;
and when the depth of the brake pedal is a first preset depth, the depth of the accelerator pedal is smaller than a second preset depth, and an anti-lock brake system of the vehicle is in a non-working state, energy feedback is not started.
8. The new energy automobile is characterized by executing the steps of the energy feedback control method of the new energy automobile according to any one of claims 1 to 7.
9. The new energy automobile energy feedback control device is characterized by comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the computer program when executed by the processor implements the steps of the new energy vehicle energy feedback control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores thereon a new energy vehicle energy feedback control program, and when the new energy vehicle energy feedback control program is executed by a processor, the new energy vehicle energy feedback control program implements the steps of the new energy vehicle energy feedback control method according to any one of claims 1 to 7.
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