CN114684143A - Electric vehicle and power limitation control method and system thereof - Google Patents
Electric vehicle and power limitation control method and system thereof Download PDFInfo
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- CN114684143A CN114684143A CN202011582738.5A CN202011582738A CN114684143A CN 114684143 A CN114684143 A CN 114684143A CN 202011582738 A CN202011582738 A CN 202011582738A CN 114684143 A CN114684143 A CN 114684143A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/54—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating speed outside of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
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Abstract
The invention discloses an electric vehicle and a power limitation control method and a power limitation control system thereof, wherein the power limitation control method of the electric vehicle comprises the following steps: when the electric vehicle runs on a road with limited low speed, acquiring the lowest speed limit of the current road and acquiring the gradient information of the current road; acquiring the current maximum discharge power of a power battery, the current maximum driving power of a motor and the current consumed power of high-voltage accessories of the electric vehicle; calculating the current highest running speed of the electric vehicle according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessory; and when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road, controlling the vehicle exterior prompting device to send out low-speed running prompting information. According to the electric vehicle power limited control method provided by the embodiment of the invention, personal driving license deduction and fine caused by non-human factors of a driver can be avoided.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an electric vehicle and a power limitation control method and system thereof.
Background
The output power of the motor of the electric automobile is limited by various factors, such as the battery level, the battery temperature, the temperature of a motor system and some faults of the whole automobile, and the factors belong to inequality and are not human factors.
For example, when the battery power is low, the vehicle speed cannot reach a high value because the battery power is limited, if the vehicle runs on a highway, the lowest running vehicle speed is set in some sections of the highway, such as 60km/h, the vehicle power is limited, the vehicle speed cannot reach the minimum value of the vehicle speed of the traffic regulations, and the vehicle is photographed by monitoring facilities such as an electronic eye and the like to perform penalty and deduction processing, but the vehicle power is not a human factor of a driver.
However, the traffic regulation facility cannot identify whether the vehicle is driven not according to the traffic regulation due to the vehicle cause or the human factor, and the driver cannot calculate the minimum vehicle speed value of whether the dynamic property of the vehicle meets the traffic regulation in real time.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a power limited control method for an electric vehicle, which is convenient for a traffic department to acquire the real state of the vehicle, can avoid personal driving license deduction and fine due to non-human factors of a driver, and can also enable the traffic department to reasonably process vehicles involved in an accident, thereby improving the convenience and rationality of traffic control and saving time and cost.
The invention aims to provide a computer readable storage medium for realizing the method, an electric vehicle for realizing the method and a power limited control system of the electric vehicle.
The power-limited control method for the electric vehicle comprises the following steps: when the electric vehicle runs on a road with limited low speed, acquiring the lowest speed limit of the current road and acquiring the gradient information of the current road; acquiring the current maximum discharge power of a power battery, the current maximum driving power of a motor and the current consumed power of high-voltage accessories of the electric vehicle; calculating the current highest running speed of the electric vehicle according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessory; and when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road, controlling an external prompting device to send out low-speed running prompting information.
According to the electric vehicle power limitation control method provided by the embodiment of the invention, the current highest running speed of the electric vehicle is calculated through the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessories, and the external prompt device is controlled to send out low-speed running prompt information when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved.
In some embodiments, calculating the current maximum operating speed of the electric vehicle based on the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current consumed power of the high-voltage accessories includes: calculating available power according to the current maximum discharge power of the power battery and the current consumed power of the high-voltage accessories, and determining actual driving available power according to the available power and the current maximum driving power of the motor; and calculating the current highest running speed of the electric vehicle according to the actual driving available power and the gradient information of the current road.
Specifically, the current maximum operating speed of the electric vehicle is calculated according to the following formula:
Pthe drive is available＝[m*g*f*cos(a)+m*g*sin(a)+Cd*A*Vmax*Vmax/21.15]*Vmax，
Wherein, PThe drive is availableAnd m is the actual driving available power, the whole vehicle full load quality value of the electric vehicle, g is 9.8, Cd is the air resistance coefficient of the electric vehicle, a is the gradient of the current road, A is the windward area of the electric vehicle, f is the rolling resistance coefficient, and Vmax is the current highest running speed of the electric vehicle.
In some optional embodiments, determining the actual driving available power from the available power and the current maximum driving power of the motor comprises: performing a fractional calculation of the available power and a current maximum driving power of the motor to determine the actual driving available power.
In some embodiments, obtaining the lowest speed limit of the current road comprises: performing information interaction with a navigation system through an ADAS system to acquire the lowest speed limit of the current road; or acquiring roadside speed limit traffic sign information through a vehicle-mounted camera to acquire the lowest speed limit of the current road.
In some optional embodiments, when the out-of-vehicle prompting device is controlled to send out the low-speed running prompting message, the current highest running speed of the electric vehicle is also sent to a traffic management platform.
In some optional embodiments, the out-of-vehicle prompting device is a prompting lamp arranged on the roof of the vehicle.
According to the computer-readable storage medium of the embodiment of the invention, the electric vehicle power limitation control program is stored on the computer-readable storage medium, and when being executed by the processor, the electric vehicle power limitation control program realizes the electric vehicle power limitation control method according to any one of the above-mentioned embodiments of the invention.
According to the computer-readable storage medium provided by the embodiment of the invention, the traffic department can acquire the real state of the vehicle, so that the individual driving license deduction and fine due to non-human factors of a driver can be avoided, and the traffic department can reasonably process vehicles involved in an accident, thereby improving the convenience and rationality of traffic control and saving time and cost.
The electric vehicle according to the embodiment of the invention comprises a memory, a processor and an electric vehicle power limitation control program which is stored on the memory and can run on the processor, wherein when the processor executes the electric vehicle power limitation control program, the electric vehicle power limitation control method according to any one of the above embodiments of the invention is realized.
According to the electric vehicle provided by the embodiment of the invention, the current highest running speed of the electric vehicle is calculated according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessories, and the vehicle exterior prompting device is controlled to send out the low-speed running prompting information when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved.
An electric vehicle power-limited control system according to an embodiment of the present invention includes: the battery manager is used for detecting the current maximum discharge power of the power battery; a motor controller for detecting a current maximum driving power of the motor; the vehicle body stabilizing system controller is used for detecting gradient information of a current road; the intelligent auxiliary driving system controller is used for acquiring the lowest speed limit of the current road; a vehicle exterior prompting device; the vehicle control unit is used for acquiring the current consumption power of a high-voltage accessory of the electric vehicle when the electric vehicle runs on a road with a limited low speed, calculating the current highest running speed of the electric vehicle according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumption power of the high-voltage accessory, and controlling the vehicle exterior prompting device to send low-speed running prompting information when the current highest running speed of the electric vehicle is smaller than the lowest limited speed of the current road.
According to the electric vehicle power limited control system provided by the embodiment of the invention, the current highest running speed of the electric vehicle is calculated through the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessories, and the external prompt device is controlled to send out low-speed running prompt information when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved. In addition, the vehicle control unit is used for calculating the highest vehicle speed capability, so that the situation that a driver turns on a warning lamp privately and the driver is speculated and skillful can be avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for power limited control of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electric vehicle and a traffic detection device according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating a power limitation control method for an electric vehicle according to an embodiment of the present invention.
Reference numerals:
an electric vehicle 1000,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An electric vehicle power limited control method according to an embodiment of the present invention is described below with reference to fig. 1 to 2.
The power-limited control method for the electric vehicle comprises the following steps:
s11, when the electric vehicle 1000 runs on a road with limited low speed, acquiring the lowest speed limit of the current road and acquiring the gradient information of the current road;
s12, acquiring the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessories of the electric vehicle 1000;
s13, calculating a current maximum operating speed of the electric vehicle 1000 according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current power consumption of the high-voltage accessories;
and S14, when the current highest running speed of the electric vehicle 1000 is less than the lowest speed limit of the current road, controlling the vehicle exterior prompting device 500 to send out low-speed running prompting information.
The invention provides a power limited control method for an electric vehicle, which mainly solves the problem that a fine is deducted due to the fact that the vehicle does not meet the urban expressway or the minimum running speed required by high speed due to non-human factors.
For example, the electric vehicle 1000 may intelligently calculate the highest running speed that the vehicle can reach on a low-speed limited road, and when the highest speed value of the vehicle calculated by the vehicle is smaller than the lowest speed limit of the current road, that is, the vehicle does not satisfy the traffic regulation, the external prompting device 500 sends out low-speed running prompting information, which indicates that the current form condition is caused by the vehicle driving capability, so that the traffic detection device 2000 such as the traffic electronic eye can use the external prompting device 500 to penalize the vehicle, thereby not only avoiding the embarrassment that the driver violates the traffic regulation due to non-human factors, avoiding the deduction and the penalty of the driver's personal driving license, but also facilitating the traffic department to obtain the real state of the vehicle, and reasonably processing the vehicle involved in trouble.
In addition, the vehicle exterior prompting device sends out low-speed running prompting information when the current highest running speed of the electric vehicle 1000 is less than the lowest speed limit of the current road, so that the condition that a driver lights a warning lamp privately can be avoided, and traffic control is facilitated.
Therefore, the problem that the speed of the electric vehicle on the market does not meet the requirements of traffic regulations due to non-human factors is solved; the irregular driving behavior of the vehicle is a human factor or a vehicle factor, and the driving method is more reasonable and safer.
According to the electric vehicle power limitation control method of the embodiment of the invention, the current highest running speed of the electric vehicle 1000 is calculated through the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessories, and the out-of-vehicle prompt device 500 is controlled to send out the low-speed running prompt information when the current highest running speed of the electric vehicle 1000 is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved.
In some embodiments, calculating the current maximum operating speed of the electric vehicle 1000 from the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current consumed power of the high-voltage accessories includes: calculating available power according to the current maximum discharge power of the power battery and the current consumed power of the high-voltage accessories, and determining actual driving available power according to the available power and the current maximum driving power of the motor; the current maximum operating speed of the electric vehicle 1000 is calculated based on the actual driving available power and the gradient information of the current road. Therefore, the available power can be calculated through the current maximum discharge power of the power battery and the current consumed power of the high-voltage accessories, and the power which can be used for driving the whole vehicle from the aspect of a battery layer can be calculated. The actual driving available power is determined through the available power and the current maximum driving power of the motor, and the power value which can be actually used for driving the whole vehicle after the battery and the motor system are integrated can be determined. Thereby. The calculated maximum running speed can be more real and accurate.
Specifically, the current maximum operating speed of the electric vehicle 1000 is calculated according to the following formula:
Pthe drive is available＝[m*g*f*cos(a)+m*g*sin(a)+Cd*A*Vmax*Vmax/21.15]*Vmax，
Wherein, PThe drive is availableFor the actual driving available power, m is the entire vehicle full load mass value of the electric vehicle 1000, g is 9.8, Cd is the air resistance coefficient of the electric vehicle 1000, a is the current road gradient, a is the windward area of the electric vehicle 1000, f is the rolling resistance coefficient, and Vmax is the current maximum operating speed of the electric vehicle 1000. Thus, the maximum vehicle speed value that the vehicle can reach in the current state can be obtained.
It should be noted that, the wind tunnel test is performed before mass production of the vehicle, and there are various methods for taking the rolling resistance coefficient, which may be a numerical value that changes according to the vehicle speed or a fixed value, and the vehicle will be tested before leaving the factory.
In some alternative embodiments, determining the actual drive available power from the available power and the current maximum drive power of the motor comprises: and carrying out small value calculation on the available power and the current maximum driving power of the motor to determine the actual driving available power. It can be understood that sometimes the battery output driving power is enough, and the motor system can reduce the power output due to overheating of the motor or failure of the motor system, so that the power value for driving can be more truly and accurately obtained by calculating the available power and the current maximum driving power of the motor by taking small values to determine the actual driving available power.
In some embodiments, obtaining the lowest speed limit of the current road comprises: performing information interaction with a navigation system through an ADAS system to acquire the lowest speed limit of the current road; or the vehicle-mounted camera is used for acquiring roadside speed-limiting traffic sign information to acquire the lowest speed limit of the current road. Therefore, the lowest speed limit of the current road can be obtained in real time, and a real and reliable lowest vehicle speed required value can be obtained.
In some alternative embodiments, when the off-board guidance device 500 is controlled to issue the low-speed travel guidance information, the current maximum operating speed of the electric vehicle 1000 is also sent to the traffic management platform. Therefore, traffic departments can conveniently acquire the real states of the vehicles, the traffic management platform can record information in real time, and the traffic departments can reasonably process the vehicles involved in the accident, so that the convenience and the reasonability of traffic control can be improved, and the time cost is saved.
In some alternative embodiments, the out-of-vehicle warning device 500 is a warning light disposed on the roof of the vehicle. This is used to warn the traffic detection device 2000 that the vehicle speed is not satisfactory due to non-human factors.
Optionally, the warning light may be red, startling, large in wavelength, long in propagation distance, and may be in a form uniformly specified by the transportation department, and of course, the warning light may also be yellow or another color, and the specific form of the warning light is not limited herein.
A computer-readable storage medium according to an embodiment of the present invention has stored thereon an electric vehicle 1000 power limitation control program, the electric vehicle 1000 power limitation control program, when executed by a processor, implementing an electric vehicle power limitation control method according to any one of the above-described embodiments of the present invention.
According to the computer-readable storage medium provided by the embodiment of the invention, the traffic department can acquire the real state of the vehicle, so that the individual driving license deduction and fine due to non-human factors of a driver can be avoided, and the traffic department can reasonably process vehicles involved in an accident, thereby improving the convenience and rationality of traffic control and saving time and cost.
The electric vehicle 1000 according to the embodiment of the present invention includes a memory, a processor, and an electric vehicle 1000 power limitation control program stored in the memory and operable on the processor, and when the processor executes the electric vehicle 1000 power limitation control program, the electric vehicle power limitation control method according to any one of the above-described embodiments of the present invention is implemented.
According to the electric vehicle 1000 of the embodiment of the present invention, the current highest operation speed of the electric vehicle 1000 is calculated from the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current consumed power of the high-voltage accessories, and the external vehicle prompting device 500 is controlled to issue the low-speed travel prompting information when the current highest operation speed of the electric vehicle 1000 is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved.
The electric vehicle power-limited control system according to the embodiment of the present invention, as shown in fig. 3, includes: the vehicle-mounted intelligent driving assisting system comprises a battery manager 100, a motor controller 200, a vehicle body stabilizing system controller 300, an intelligent driving assisting system controller 400, a vehicle exterior prompting device 500 and a vehicle control unit 600. The battery manager 100 is used to detect the current maximum discharge power of the power battery, the motor controller 200 is used to detect the current maximum driving power of the motor, and the body stabilization system controller 300 is used to detect the gradient information of the current road. The intelligent driver assistance system controller 400 is configured to obtain the lowest speed limit of the current road. The vehicle control unit 600 is respectively connected to the battery manager 100, the motor controller 200, the vehicle body stabilization system controller 300, the intelligent assistant driving system controller 400 and the vehicle exterior prompting device 500, and the vehicle control unit 600 is configured to acquire a current power consumption of the high-voltage accessory 700 of the electric vehicle 1000 when the electric vehicle 1000 is running on a road with a limited low speed, calculate a current maximum operating speed of the electric vehicle 1000 according to gradient information of the current road, a current maximum discharge power of the power battery, a current maximum driving power of the motor, and a current power consumption of the high-voltage accessory 700, and control the vehicle exterior prompting device 500 to send out low-speed running prompting information when the current maximum operating speed of the electric vehicle 1000 is less than the minimum speed of the current road.
According to the electric vehicle power limited control system of the embodiment of the present invention, the current highest operation speed of the electric vehicle 1000 is calculated from the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current consumed power of the high voltage accessories, and the out-of-vehicle prompt device 500 is controlled to send out the low speed driving prompt information when the current highest operation speed of the electric vehicle 1000 is less than the lowest speed limit of the current road. Therefore, the traffic department can conveniently acquire the real state of the vehicle, the personal driving license deduction and fine due to the fact that a driver does not have human factors can be avoided, the traffic department can reasonably process the vehicles involved in the accident, the convenience and the reasonability of traffic control can be improved, and the time cost is saved. In addition, the vehicle control unit 600 is used for calculating the highest vehicle speed capability, so that the situation that a driver turns on a warning lamp privately and the driver is speculated and skillful can be avoided.
Optionally, the high-voltage accessory 700 may include a dc converter, an air conditioner compressor, and a PTC heating system, which all consume the electric energy of the battery system and report the real-time consumed power to the vehicle controller 600 in real time through the can signal.
Optionally, the vehicle control unit 600 performs information interaction with the battery manager 100, the motor controller 200, the vehicle body stabilization system controller 300, and the intelligent auxiliary driving system controller 400 through a can line.
Optionally, the vehicle control unit 600 and the vehicle exterior prompting device 500 are connected by a hard wire, and the vehicle control unit 600 directly controls driving to turn on and off the indicator light.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An electric vehicle power limited control method, characterized by comprising:
when the electric vehicle runs on a road with limited low speed, acquiring the lowest speed limit of the current road and acquiring the gradient information of the current road;
acquiring the current maximum discharge power of a power battery, the current maximum driving power of a motor and the current consumed power of high-voltage accessories of the electric vehicle;
calculating the current highest running speed of the electric vehicle according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumed power of the high-voltage accessory;
and when the current highest running speed of the electric vehicle is less than the lowest speed limit of the current road, controlling an external prompting device to send out low-speed running prompting information.
2. The electric vehicle power-limited control method of claim 1, wherein calculating the current maximum operating speed of the electric vehicle based on the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor, and the current consumed power of the high-voltage accessories comprises:
calculating available power according to the current maximum discharge power of the power battery and the current consumed power of the high-voltage accessories, and determining actual driving available power according to the available power and the current maximum driving power of the motor;
and calculating the current highest running speed of the electric vehicle according to the actual driving available power and the gradient information of the current road.
3. The electric vehicle power-limited control method of claim 2, characterized in that the current maximum operating speed of the electric vehicle is calculated according to the following formula:
Pthe drive is available＝[m*g*f*cos(a)+m*g*sin(a)+Cd*A*Vmax*Vmax/21.15]*Vmax，
Wherein, PThe drive is availableAnd m is the total vehicle load mass value of the electric vehicle, g is 9.8, Cd is the air resistance coefficient of the electric vehicle, a is the gradient of the current road, A is the windward area of the electric vehicle, f is the rolling resistance coefficient, and Vmax is the current highest running speed of the electric vehicle.
4. The electric vehicle power-limited control method of claim 2, wherein determining an actual driving available power from the available power and a current maximum driving power of the motor comprises:
performing a fractional calculation of the available power and a current maximum driving power of the motor to determine the actual driving available power.
5. The electric vehicle power-limited control method of any one of claims 1-4, wherein obtaining the lowest speed limit for the current road comprises:
performing information interaction with a navigation system through an ADAS system to obtain the lowest speed limit of the current road; or
And acquiring roadside speed-limiting traffic sign information through a vehicle-mounted camera to acquire the lowest speed limit of the current road.
6. The electric vehicle power-limited control method according to any one of claims 1-4, characterized in that when the off-board prompting device is controlled to issue a low-speed running prompting message, the current maximum running speed of the electric vehicle is also sent to a traffic management platform.
7. The electric vehicle power-limited control method according to any one of claims 1 to 4, characterized in that the out-of-vehicle warning device is a warning lamp provided on a roof of a vehicle.
8. A computer-readable storage medium, characterized in that an electric vehicle power limitation control program is stored thereon, which when executed by a processor implements the electric vehicle power limitation control method according to any one of claims 1 to 7.
9. An electric vehicle comprising a memory, a processor, and an electric vehicle power limited control program stored on the memory and executable on the processor, the processor implementing the electric vehicle power limited control method of any one of claims 1-7 when executing the electric vehicle power limited control program.
10. An electric vehicle power limited control system, comprising:
the battery manager is used for detecting the current maximum discharge power of the power battery;
a motor controller for detecting a current maximum driving power of the motor;
the vehicle body stabilizing system controller is used for detecting gradient information of a current road;
the intelligent auxiliary driving system controller is used for acquiring the lowest speed limit of the current road;
a vehicle exterior prompting device;
the vehicle control unit is used for acquiring the current consumption power of a high-voltage accessory of the electric vehicle when the electric vehicle runs on a road with a limited low speed, calculating the current highest running speed of the electric vehicle according to the gradient information of the current road, the current maximum discharge power of the power battery, the current maximum driving power of the motor and the current consumption power of the high-voltage accessory, and controlling the vehicle exterior prompting device to send low-speed running prompting information when the current highest running speed of the electric vehicle is smaller than the lowest limited speed of the current road.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1407826A (en) * | 1971-08-28 | 1975-09-24 | Bbc Brown Boveri & Cie | Speed regulating system for an electrically powered vehicle |
| US20150266483A1 (en) * | 2014-03-21 | 2015-09-24 | Joel Robert Williams | System And Method For Computing Slope Of A Road In An Electric Vehicle |
| CN105946620A (en) * | 2016-06-07 | 2016-09-21 | 北京新能源汽车股份有限公司 | Electric automobile and active speed-limiting control method and system thereof |
| US20160304080A1 (en) * | 2015-04-17 | 2016-10-20 | Mitsubishi Electric Corporation | Vehicle energy management device |
| CN107472018A (en) * | 2016-06-29 | 2017-12-15 | 宝沃汽车（中国）有限公司 | Control method, control system and the vehicle of vehicle |
| CN107878437A (en) * | 2016-09-29 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | Vehicle control system and its method |
| CN109532845A (en) * | 2018-12-21 | 2019-03-29 | 奇瑞汽车股份有限公司 | Control method, device and the storage medium of intelligent automobile |
| CN109552071A (en) * | 2018-12-27 | 2019-04-02 | 睿驰达新能源汽车科技（北京）有限公司 | A kind of control method and device of electric vehicle travel speed |
| CN109649187A (en) * | 2019-01-04 | 2019-04-19 | 国机智骏科技有限公司 | Driving power control method, device and the electric car with it of electric car |
-
2020
- 2020-12-28 CN CN202011582738.5A patent/CN114684143B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1407826A (en) * | 1971-08-28 | 1975-09-24 | Bbc Brown Boveri & Cie | Speed regulating system for an electrically powered vehicle |
| US20150266483A1 (en) * | 2014-03-21 | 2015-09-24 | Joel Robert Williams | System And Method For Computing Slope Of A Road In An Electric Vehicle |
| US20160304080A1 (en) * | 2015-04-17 | 2016-10-20 | Mitsubishi Electric Corporation | Vehicle energy management device |
| CN105946620A (en) * | 2016-06-07 | 2016-09-21 | 北京新能源汽车股份有限公司 | Electric automobile and active speed-limiting control method and system thereof |
| CN107472018A (en) * | 2016-06-29 | 2017-12-15 | 宝沃汽车（中国）有限公司 | Control method, control system and the vehicle of vehicle |
| CN107878437A (en) * | 2016-09-29 | 2018-04-06 | 法乐第(北京)网络科技有限公司 | Vehicle control system and its method |
| CN109532845A (en) * | 2018-12-21 | 2019-03-29 | 奇瑞汽车股份有限公司 | Control method, device and the storage medium of intelligent automobile |
| CN109552071A (en) * | 2018-12-27 | 2019-04-02 | 睿驰达新能源汽车科技（北京）有限公司 | A kind of control method and device of electric vehicle travel speed |
| CN109649187A (en) * | 2019-01-04 | 2019-04-19 | 国机智骏科技有限公司 | Driving power control method, device and the electric car with it of electric car |
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| CN114684143B (en) | 2023-10-20 |
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