CN110103719B - Charging prompting method and system of electric automobile and vehicle - Google Patents

Charging prompting method and system of electric automobile and vehicle Download PDF

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Publication number
CN110103719B
CN110103719B CN201910383128.3A CN201910383128A CN110103719B CN 110103719 B CN110103719 B CN 110103719B CN 201910383128 A CN201910383128 A CN 201910383128A CN 110103719 B CN110103719 B CN 110103719B
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electric automobile
driving
power consumption
driving route
mileage
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CN110103719A (en
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刘畅
覃世安
邓俊松
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Guangzhou Xiaopeng Motors Technology Co Ltd
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Guangzhou Xiaopeng Motors Technology Co Ltd
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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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/44—Control modes by parameter estimation
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Navigation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

A charging prompting method, a system and a vehicle of an electric automobile are provided, wherein the method comprises the following steps: acquiring a driving route of the electric automobile and road information of the driving route; predicting the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile; and when the remaining cruising mileage is less than or equal to the mileage threshold value, outputting a charging prompt message. By implementing the embodiment of the invention, the remaining cruising mileage of the electric automobile when the electric automobile runs to the destination according to the running route can be predicted, so that the user can be prompted to charge the vehicle in advance when the remaining cruising mileage is insufficient, the risk of insufficient electric quantity of the vehicle is reduced, and the problem that the insufficient cruising mileage is found in the running process is reduced.

Description

Charging prompting method and system of electric automobile and vehicle
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a charging prompting method and system of an electric automobile and a vehicle.
Background
Along with the popularization of electric vehicles, the charging demand of electric vehicles is also expanding. In practice, it has been found that users are easily put into a low battery dilemma. For example, the remaining capacity of the vehicle is found to be small during driving, so that the cruising range of the vehicle is short, and the vehicle cannot be supported to reach the destination. This problem can be solved by charging the vehicle before each departure. However, such an operation is troublesome and is easy to forget by the user. Especially, when the short distance driving is performed in the city, the user can easily neglect to check the residual electric quantity of the vehicle, so that the risk of insufficient electric quantity in the driving process of the vehicle is increased.
Disclosure of Invention
The embodiment of the invention discloses a charging prompt method and system for an electric automobile and a vehicle, which can be used for pushing a charging prompt for a user in advance and reducing the risk of insufficient electric quantity of the vehicle.
The embodiment of the invention discloses a charging prompting method of an electric automobile in a first aspect, which comprises the following steps:
acquiring a driving route of the electric automobile and road information of the driving route;
predicting the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile;
and when the remaining cruising mileage is less than or equal to the mileage threshold value, outputting a charging prompt message.
As an alternative implementation, in the first aspect of the embodiment of the present invention, the road information of the driving route includes: the distance of the driving route, the average driving time of the driving route and the average vehicle speed; the power consumption parameters of the electric automobile comprise: the total power of non-driving power consumption of the electric automobile and the power consumption per hundred kilometers under a standard working condition;
the predicting the remaining cruising range of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile comprises the following steps:
calculating the predicted power consumption per hundred kilometers when the electric automobile runs on the running route according to the corresponding relation between the power consumption per hundred kilometers and the speed of the electric automobile during actual running and the average speed of the running route;
according to the predicted electricity consumption per hundred kilometers and the distance of the driving route, predicting pure driving energy consumption consumed when the electric automobile drives on the driving route;
predicting non-driving energy consumption consumed when the electric automobile drives on the driving route according to the average driving time consumption of the driving route and the total non-driving power consumption of the electric automobile;
calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile;
and determining the predicted residual cruising range of the electric automobile when the electric automobile reaches the destination according to the current actual cruising range of the electric automobile and the predicted consumed range.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the road information of the driving route further includes a road power consumption coefficient of the driving route, and the larger the value of the road power consumption coefficient is, the larger the influence degree of the road condition of the driving route on the increase of the power consumption of the electric vehicle is;
the calculating the predicted consumed mileage when the electric vehicle reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric vehicle comprises the following steps:
correcting the sum of the pure driving energy consumption and the non-driving energy consumption by using the road power consumption coefficient of the driving route to obtain a correction result;
and calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the correction result and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile.
As an optional implementation manner, in the first aspect of this embodiment of the present invention, the method further includes:
acquiring automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
calculating the electricity consumption per hundred kilometers actually generated by the sample vehicle under different real-time speeds according to the real-time speed of the sample vehicle and the automobile driving power consumption corresponding to the real-time speed;
and performing function fitting on the power consumption per hundred kilometers actually generated by a plurality of sample vehicles at different real-time speeds to obtain the corresponding relation between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
As an optional implementation manner, in the first aspect of this embodiment of the present invention, the method further includes:
detecting whether a destination where the electric automobile runs is obtained or not;
if the road information is acquired, executing the step of acquiring the driving route of the electric automobile and the road information of the driving route;
and if the current actual cruising mileage of the electric automobile is not acquired, outputting a charging prompt message when the current actual cruising mileage of the electric automobile is less than or equal to a mileage threshold value.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the outputting a charging alert message includes:
searching charging piles in the range along the driving route;
and outputting the position of the charging pile to prompt a user to utilize the charging pile to charge the electric automobile.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the searching for the charging pile in the range along the driving route includes:
searching alternative charging piles in the range along the driving route;
when the number of the alternative charging piles is larger than one, determining a first correction coefficient of each alternative charging pile according to the historical charging times of the electric automobile which is charged in the alternative charging pile;
determining a second correction coefficient of the alternative charging pile according to the current idle charging potential number of the alternative charging pile;
determining a third correction coefficient of the alternative charging pile according to the user evaluation average score of the alternative charging pile;
determining a fourth correction coefficient of the alternative charging pile according to the charging unit price of the alternative charging pile;
correcting the deviation distance of the alternative charging pile from the driving route by using the first correction coefficient, the second correction coefficient, the third correction coefficient and the fourth correction coefficient;
selecting the charging pile with the shortest deviation distance after correction from the alternative charging piles as a recommended charging pile;
and, output the position of filling electric pile to the suggestion user utilizes it is right to fill electric automobile charges, include:
and outputting the position of the recommended charging pile to prompt a user to charge the electric automobile by using the recommended charging pile.
The second aspect of the embodiment of the present invention discloses a charging prompt system for an electric vehicle, including:
an acquisition unit configured to acquire a travel route of the electric vehicle and road information of the travel route;
the prediction unit is used for predicting the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile;
and the prompting unit is used for outputting a charging prompting message when the remaining cruising mileage is less than or equal to the mileage threshold value.
As an alternative implementation, in the second aspect of the embodiment of the present invention, the road information of the driving route includes: the distance of the driving route, the average driving time of the driving route and the average vehicle speed; the power consumption parameters of the electric automobile comprise: the total power of non-driving power consumption of the electric automobile and the power consumption per hundred kilometers under a standard working condition; the prediction unit includes:
the power consumption calculating subunit is configured to calculate power consumption per hundred kilometers predicted when the electric vehicle runs on the running route according to a correspondence between the power consumption per hundred kilometers and a vehicle speed when the electric vehicle actually runs and an average vehicle speed of the running route;
the first energy consumption calculating subunit is used for predicting pure driving energy consumption consumed by the electric automobile when the electric automobile runs on the running route according to the predicted electricity consumption per hundred kilometers and the distance of the running route;
the second energy consumption calculation subunit is used for predicting the non-driving energy consumption consumed by the electric automobile when the electric automobile drives on the driving route according to the average driving time consumption of the driving route and the total non-driving power consumption of the electric automobile;
the first mileage calculating subunit is used for calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile;
and the second mileage calculating subunit is used for determining the predicted remaining cruising mileage of the electric automobile when the electric automobile reaches the destination according to the current actual cruising mileage of the electric automobile and the predicted consumed mileage.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the road information of the driving route further includes a road power consumption coefficient of the driving route; the larger the value of the road power consumption coefficient is, the larger the influence degree of the road condition of the driving road on the increase of the power consumption of the electric automobile is;
the first mileage calculating unit is specifically configured to correct the sum of the pure driving energy consumption and the non-driving energy consumption by using a road power consumption coefficient of the driving route to obtain a correction result; and calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the correction result and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the system further includes:
the acquisition unit is used for acquiring automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
the determining unit is used for calculating the electricity consumption per hundred kilometers actually generated by the sample vehicle under different real-time speeds according to the real-time speed of the sample vehicle and the automobile driving power consumption corresponding to the real-time speed;
and the fitting unit is used for performing function fitting on the power consumption per hundred kilometers actually generated by the plurality of sample vehicles under different real-time speeds to obtain the corresponding relation between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the system further includes:
the detection unit is used for detecting whether a destination where the electric automobile runs is obtained or not;
the obtaining unit is specifically configured to obtain a driving route of the electric vehicle and road information of the driving route when the detection unit obtains the destination;
the prompting unit is further configured to output a charging prompting message if the current actual cruising mileage of the electric vehicle is less than or equal to a mileage threshold value when the destination is not obtained by the detection unit.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, the prompting unit includes:
the searching subunit is used for searching the charging piles within the range along the driving route;
and the output subunit is used for outputting the position of the charging pile so as to prompt a user to utilize the charging pile to charge the electric automobile.
As an optional implementation manner, in a second aspect of the embodiment of the present invention, the searching subunit includes:
the searching module is used for searching the alternative charging piles in the range along the driving route;
the determining module is used for determining a first correction coefficient of the alternative charging piles according to the historical charging times of the electric automobile which is charged in the alternative charging piles for each alternative charging pile when the number of the alternative charging piles is larger than one; determining a second correction coefficient of the alternative charging pile according to the current idle charging potential number of the alternative charging pile; determining a third correction coefficient of the alternative charging pile according to the user evaluation average score of the alternative charging pile; determining a fourth correction coefficient of the alternative charging pile according to the charging unit price of the alternative charging pile;
the correction module is used for correcting the deviation distance of the alternative charging pile from the driving route by using the first correction coefficient, the second correction coefficient, the third correction coefficient and the fourth correction coefficient;
the selection module is used for selecting the charging pile with the shortest deviation distance after correction from the alternative charging piles as a recommended charging pile;
the output subunit is specifically configured to output the position of the recommended charging pile so as to prompt a user to charge the electric vehicle by using the recommended charging pile.
In a third aspect of the embodiments of the present invention, a vehicle is disclosed, which includes any one of the charging prompt systems for electric vehicles disclosed in the second aspect of the embodiments of the present invention.
The fourth aspect of the present invention discloses a charging prompt system for an electric vehicle, including:
a memory storing executable program code;
a processor coupled with the memory;
the processor calls the executable program code stored in the memory to execute any one of the methods disclosed in the first aspect of the embodiments of the present invention.
A fourth aspect of the present invention discloses a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute any one of the methods disclosed in the first aspect of the embodiments of the present invention.
A fifth aspect of the embodiments of the present invention discloses a computer program product, which, when running on a computer, causes the computer to execute any one of the methods disclosed in the first aspect of the embodiments of the present invention.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
predicting the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route by acquiring the driving route of the electric automobile and the road information of the driving route and adding the power consumption parameter of the electric automobile; if the remaining cruising mileage is less than or equal to the mileage threshold value, the charging prompt message is output, so that a user can be prompted to charge the vehicle in advance, the risk of insufficient electric quantity of the vehicle is reduced, and the problem that the insufficient cruising mileage of the vehicle is found in the process of driving is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a charging prompting method for an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another charging prompting method for an electric vehicle according to an embodiment of the present invention;
FIG. 3 is a data statistics plot of power consumption per hundred kilometers versus real-time vehicle speed as actually produced in accordance with an embodiment of the present invention;
fig. 4 is a schematic flowchart of a charging prompting method for an electric vehicle according to another embodiment of the disclosure;
fig. 5 is a schematic structural diagram of a charging prompt system of an electric vehicle according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another charging prompt system for an electric vehicle according to an embodiment of the disclosure;
fig. 7 is a schematic structural diagram of a charging prompt system of another electric vehicle according to an embodiment of the disclosure;
fig. 8 is a schematic structural diagram of a charging prompt system of another electric vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are 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.
It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a charging prompt method and system for an electric automobile and a vehicle, which can be used for pushing a charging prompt for a user in advance and reducing the risk of insufficient electric quantity of the vehicle. The following are detailed below.
Example one
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a charging prompting method for an electric vehicle according to an embodiment of the present invention. As shown in fig. 1, the charging prompting method for an electric vehicle may include the following steps:
101. the prompting system acquires a driving route of the electric automobile and road information of the driving route.
In the embodiment of the invention, the driving route of the electric automobile can be acquired through a navigation system of the automobile, and the navigation system can use navigation services provided by map service providers such as a high-grade map, a Baidu map and the like. The road information of the driving route obtained by the prompting system can include, but is not limited to, congestion information of the driving route, a distance d of the driving route, an average driving time t, an average vehicle speed v and the like. Wherein the average travel time t refers to an average time required for the plurality of vehicles to travel from the current position of the electric vehicle to the destination of the travel route when traveling along the travel route; accordingly, the average vehicle speed v refers to an average vehicle speed when a plurality of vehicles travel from the current position of the electric vehicle to the travel route destination while traveling along the travel route. The prompt system may calculate the average vehicle speed v according to the acquired distance d of the driving route and the average driving time t, or may directly acquire the average vehicle speed v from the navigation system, which is not limited in the embodiment of the present invention.
102. The prompting system predicts the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile.
In the embodiment of the present invention, the power consumption parameters of the electric vehicle may include, but are not limited to: 1. the total power consumption P of each power consumption unit in the current state of the electric vehicle may be transmitted through a Controller Area Network (CAN) bus, and the power consumption units may include power consumption units related to vehicle driving (such as motors) and power consumption units unrelated to vehicle driving (such as air conditioners); 2. the electric vehicle consumes electricity per hundred kilometers under standard working conditions, the standard working conditions may be any one of the working conditions of NEDC (new European Driving Cycle), WLTC (world Light-duty Test Cycle), CLTC (China Light-duty vehicle Test Cycle), and the like, and for convenience of description, the following contents are expressed as electricity consumption per hundred kilometers under the NEDC working conditions aNEDCFor example.
The prompting system can calculate the predicted consumed mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameters of the electric automobile, and then the predicted consumed mileage is combined with the current actual cruising mileage D of the electric automobileCurrent cruising mileageThe remaining cruising mileage D of the electric vehicle when the electric vehicle reaches the destination of the driving route can be calculatedRemaining cruising mileage. The specific calculation formula may be as follows:
Dremaining cruising mileage＝DCurrent cruising mileage-P*t/ANEDC；
103. And when the remaining cruising mileage is less than or equal to the mileage threshold value, the prompting system outputs a charging prompting message.
In the embodiment of the present invention, the mileage threshold may default to 0, or may be any value greater than 0, and specifically may be set by the user according to the lowest mileage that may cause mileage anxiety.
The remaining cruising mileage D calculated according to the above formulaRemaining cruising mileageAnd if the calculated remaining cruising mileage is less than or equal to the mileage threshold value, triggering and outputting a charging prompt message for prompting the remaining cruising mileage predicted by the system before the electric automobile reaches the destination. The prompting system can specifically output charging prompting messages in the forms of characters, voice or videos and the like through the vehicle-mounted large screen to prompt that the electric quantity of the electric automobile of a user is insufficient, so that the user can be prompted to charge the electric automobile before the electric automobile reaches a destination, and the electric quantity of the electric automobile can support the electric automobile to reach the destination.
Preferably, the prompting system may execute the method described in fig. 1 before the electric vehicle is driven (e.g., when the electric vehicle is ignited and is in the P range), so as to determine in advance whether the current actual cruising range can support the trip when the electric vehicle is started, so that the user may be prompted to charge the vehicle in advance, and the risk of insufficient power is further reduced.
It can be seen that, in the method described in fig. 1, the prompting system can predict the remaining cruising range of the electric vehicle when the electric vehicle travels to the destination according to the driving route of the electric vehicle, the road information of the driving route, and the power consumption parameter of the electric vehicle itself, so that when the predicted remaining cruising range is less than or equal to the range threshold, a charging prompting message is output to prompt the user to charge the vehicle in advance, thereby reducing the risk of insufficient electric quantity of the vehicle, and reducing the problem that the insufficient cruising range of the vehicle is found during the driving process.
Example two
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating another charging prompting method for an electric vehicle according to an embodiment of the present invention. As shown in fig. 2, the charging prompting method for an electric vehicle may include the following steps:
201. the prompting system detects whether a destination where the electric automobile runs is obtained; if yes, executing step 203 to step 205; if not, step 202 is performed.
In the embodiment of the invention, the destination of the electric automobile can be input by a user, and a default place of the schedule record can be called as the destination.
202. And when the current actual cruising mileage of the electric automobile is less than or equal to the mileage threshold value, the prompting system outputs a charging prompting message.
In the embodiment of the invention, if the destination where the electric automobile runs is not acquired, the total distance of the journey is difficult to count, so that the running mileage which can be consumed by the electric automobile is difficult to predict. Therefore, step 202 is executed to monitor the actual cruising range of the electric vehicle in real time, and when the actual cruising range is less than or equal to the range threshold, the charging prompt message is triggered and output in time.
203. The prompting system acquires a driving route of the electric automobile and road information of the driving route.
In the embodiment of the present invention, the driving route acquired by the prompting system takes the destination where the electric vehicle drives in step 201 as the route end point. Further, the road information of the driving route acquired by the prompting system may include, but is not limited to: 1. the distance d of the driving route; 2. the average running time t of the running route; 3. the average vehicle speed v of the travel route; 4. the road power consumption coefficient k of the travel route. The specific value of the road power consumption coefficient can be determined by referring to the following factors: the number of traffic lights along the driving route, the level change condition (uphill/downhill condition) of the road on the driving route, the speed limit information of the road on the driving route, the road surface condition of the road on the driving route, and the like; the larger the value of the road power consumption coefficient k is, the larger the influence degree of the road condition of the driving route on the increase of the power consumption of the electric automobile is. For example, the value range of the road power consumption coefficient k may be [0.8,1.2], and if the road on the driving route is muddy, the traffic lights are dense, and the up-down slope is frequent, the value of k is large.
In addition, the driving route acquired by the prompting system may specifically be composed of n segmented road segments, and accordingly, the prompting system may acquire the route d corresponding to each segmented road segmenti(i＝1，2，……n)Average travel time t of each segmented road sectioni(i＝1，2，……n)Average vehicle speed v corresponding to each segmented road sectioni(i＝1，2，……n)。
204. The prompting system predicts the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile.
In the embodiment of the present invention, the power consumption parameters of the electric vehicle may include, but are not limited to: 1. total power P of non-driving power consumption of electric automobile in current stateConsumption of electricity during non-drivingI.e. the total power of the electricity consuming units not related to the driving of the vehicle; 2. electric automobile power consumption A per hundred kilometers under NEDC working conditionNEDC。
Optionally, in this embodiment of the present invention, a specific implementation manner of step 204 may be as follows:
2041. the prompting system calculates the predicted power consumption per hundred kilometers when the electric automobile runs on the running route according to the corresponding relation between the power consumption per hundred kilometers and the speed of the electric automobile when the electric automobile actually runs and the average speed v of the running route.
In the embodiment of the invention, it can be understood that the electric automobile runs under different working conditions to generate different electricity consumption per hundred kilometers, and the electricity consumption per hundred kilometers during actual running has a certain corresponding relation with the vehicle speed. As an optional implementation manner, in the embodiment of the present invention, the corresponding relationship between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs may be obtained by:
s1, collecting automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
specifically, a travel schedule of each sample vehicle can be acquired, and each piece of data in the travel schedule is the real-time speed of the sample vehicle, the corresponding motor torque and the corresponding motor rotating speed under the real-time speed, and the like; segmenting all the strokes according to the speed, and calculating the corresponding automobile driving power consumption power under each speed segment, wherein the specific calculation mode can be as follows: the driving power consumption of the automobile is equal to motor torque and motor rotating speed/9500;
s2, calculating the electricity consumption per hundred kilometers actually generated by the sample vehicle under different real-time speeds according to the real-time speed of the sample vehicle and the vehicle driving electricity consumption power corresponding to the real-time speed; the specific calculation method may be:
Figure BDA0002053538870000121
and S3, performing function fitting on the power consumption per hundred kilometers actually generated by the plurality of sample vehicles under different real-time speeds to obtain the corresponding relation between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
Referring to fig. 3, fig. 3 is a data statistical chart of electricity consumption per hundred kilometers and real-time vehicle speed actually generated according to an embodiment of the present invention. Fig. 3 shows the data collected during months 6, 7 and 8. As an alternative embodiment, the data for month 8 may be used as a training set, and the data for months 6 and 7 may be used as a test set.
In training, the function f (x) … … ax is used3+bx2And fitting discrete points in the training set by the + cx + d, and finding out the most matched curve by using a linear algebraic least square method by controlling the coefficient of the highest order term. Meanwhile, the fitted curve needs to be compatible with the discrete points of the test set at the same time, so as to avoid under-fitting and over-fitting conditions. And finally, fitting to obtain a curve with the minimum error, wherein the curve can be used as the corresponding relation between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
For example, assume that the highest order term is x6The error of the test set is minimal. The correspondence between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually travels can be expressed as:
f(x)＝ax6+bx5+cx4+dx3+ex2+fx+g；
the above steps S1 to S3 may be performed in an off-line state, and the presentation system may directly call the function f (x) generated in advance to perform the calculation when performing step 2041.
Correspondingly, the predicted electricity consumption per hundred kilometers of the electric automobile when the electric automobile runs on the running route can be obtained by substituting the obtained average speed v of the running route into the function f (x).
In addition, in the embodiment of the invention, the prompting system is used for enabling the pure driving energy consumption E consumed by the electric automobile and the power consumption units related to driving to be consumedPure driveAnd a non-driving energy consumption E consumed by the driving-independent power consumption unitNon-drivingSeparate calculations are performed. Accordingly, step 2032 to step 2033 described below are performed.
2042. The prompting system predicts the pure driving energy consumption E consumed when the electric automobile runs on the running route according to the predicted electricity consumption per hundred kilometers and the distance d of the running routePure drive。
In the embodiment of the invention, the product of the predicted electricity consumption per hundred kilometers when the electric automobile runs on the running route and the distance d of the running route is the predicted pure driving energy consumption EPure drive。
It will be appreciated that if the driving route includes n segmented road segments, the segmented vehicle speed v may be set1、v2、v3、……vnRespectively substituting into the function f (x) to obtain the predicted electricity consumption per hundred kilometers corresponding to each segmented road section; multiplied by the corresponding segment distance d1、d2、d3、……dnObtaining the pure driving energy consumption corresponding to each subsection road section, and summing the pure driving energy consumption corresponding to each subsection road section to obtain the EPure drive。
2043. The prompting system is used for prompting the total non-driving power consumption power P of the electric automobile according to the average driving time t of the driving routeConsumption of electricity during non-drivingPredicting the non-driving energy consumption E consumed when the electric vehicle drives on the driving routeNon-driving。
In the embodiment of the present invention, it can be understood that, when the driving route includes n segment sections, the average driving time t may also directly use the total average driving time of the entire driving route.
2044. Prompt system utilization lineRoad power consumption coefficient k of driving route to pure driving power consumption EPure driveAnd energy consumption without driving ENon-drivingAnd correcting the sum to obtain a corrected result.
2045. The prompt system consumes A per hundred kilometers of electricity according to the correction result and the standard working condition of the electric automobileNEDCAnd calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route.
2046. The prompt system is used for prompting the current actual cruising mileage D of the electric automobileCurrent cruising mileageAnd the predicted consumption mileage, the predicted remaining cruising mileage D when the electric automobile arrives at the destination is determinedRemaining cruising mileage。
The specific implementation shown in steps 2041 to 2046 can be represented by the following calculation formula:
Dremaining cruising mileage＝DCurrent cruising mileage-(EPure drive+PConsumption of electricity during non-driving*t)*k/ANEDC；
It is understood that, in other possible embodiments, the calculation may be performed directly according to the power consumption condition of the electric vehicle without using the road power consumption coefficient k, and may be specifically represented by the following calculation formula:
Dremaining cruising mileage＝DCurrent cruising mileage-(EPure drive+PConsumption of electricity during non-driving*t)/ANEDC；
After calculating the predicted remaining cruising range DRemaining endurance mileageThereafter, the process continues to step 205 described below.
205. And when the remaining cruising mileage is less than or equal to the mileage threshold value, the prompting system outputs a charging prompting message.
It can be seen that, in the method described in fig. 2, when the driving destination of the electric vehicle is obtained, the prompting system may predict the possible remaining cruising mileage of the electric vehicle when the electric vehicle reaches the destination, so as to prompt the user to charge the electric vehicle in advance; and when the driving destination of the electric automobile is not acquired, the actual cruising mileage of the electric automobile can be monitored, and a user is prompted to charge the electric automobile. Furthermore, the prompting system performs big data mining on actual driving data of a plurality of sample vehicles, and establishes a corresponding relation between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually drives, so that the prompting system can predict the possible remaining cruising mileage of the electric vehicle more accurately. Furthermore, the road power consumption coefficient of the driving route can be added for correction, and the prediction accuracy is further improved.
EXAMPLE III
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a charging prompting method for an electric vehicle according to another embodiment of the present invention. As shown in fig. 4, the charging prompting method for an electric vehicle may include the following steps:
301. the prompting system detects whether a destination where the electric automobile runs is obtained; if yes, executing step 303-step 305; if not, step 302 is performed.
302. The prompting system monitors whether the current actual cruising mileage of the electric automobile is less than or equal to a mileage threshold value; if yes, executing step 306 to step 310; if not, execution continues with step 302.
303. The prompting system acquires a driving route of the electric automobile and road information of the driving route.
304. The prompting system predicts the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile.
In the embodiment of the present invention, the specific implementation manner of step 304 is as shown in step 2041 to step 2046 in embodiment two, and details are not described below.
305. The prompting system judges whether the predicted remaining cruising mileage is less than or equal to a mileage threshold value; if yes, executing step 306 to step 310; if not, the flow is ended.
306. And the prompting system searches for alternative charging piles in the range along the driving route.
In the embodiment of the present invention, when the destination where the electric vehicle travels is obtained, the travel route along the range may be: an area formed by the normal lines of each point on the driving route with the current position of the vehicle as a starting point and the destination as an end point, wherein the lengths of the normal lines of each point are the same; when the destination where the electric vehicle runs is not acquired, the running route along the range may be: and the distance between the vehicle and the current position of the vehicle is smaller than or equal to the area formed by the position points of the preset distance threshold.
307. When the number of the alternative charging piles is larger than one, the prompting system determines a first correction coefficient K1, a second correction coefficient K2, a third correction coefficient K3 and a fourth correction coefficient K4 of each alternative charging pile.
In the embodiment of the invention, the first correction coefficient corresponds to the historical charging times of the electric automobile which is charged in the alternative charging pile; the second correction coefficient corresponds to the number of the current idle charging positions of the alternative charging pile; determining a third correction coefficient and the user evaluation average score of the alternative charging pile; and the fourth correction coefficient corresponds to the charging unit price of the alternative charging pile. The value ranges of K1, K2, K3 and K4 may be (0, 1), it is understood that the value of K1 is smaller as the historical charging times of the alternative charging piles are larger, the value of K2 is smaller as the current idle charging bit number of the alternative charging piles is larger, the value of K3 is smaller as the user evaluation average score of the alternative charging piles is higher, and the value of K4 is smaller as the charging unit price of the alternative charging piles is lower.
308. The prompting system corrects the deviation distance L of the alternative charging pile from the driving route by using the first correction coefficient K1, the second correction coefficient K2, the third correction coefficient K3 and the fourth correction coefficient K4.
In the embodiment of the invention, the deviation distance L of the alternative charging pile from the driving route refers to the driving distance required by the electric automobile to leave the driving route to reach the position of the alternative charging pile and return to the driving route again. When the alternative charging pile triggers any one of the four conditions, the offset distance L may be multiplied by a certain correction coefficient.
For example, assuming that the deviation distance of an alternative charging pile is L1, the electric vehicle often goes to the alternative charging pile for charging, and the user evaluation average of the alternative charging pile is 4.5, then the corrected deviation distance of the alternative charging pile is L1 × K1 × K3. It can be understood that, in the above example, the charging unit price of the alternative charging pile and the current idle charging potential number are not obtained, then the values of K2 and K4 may default to 1.
309. And the prompt system selects the charging pile with the shortest corrected deviation distance from the alternative charging piles as the recommended charging pile.
In the embodiment of the invention, the shorter the deviation distance of the alternative charging pile is, the more conveniently the electric automobile can reach the alternative charging pile. Therefore, after the historical charging times, the current idle charging potential number, the user evaluation and the charging unit price of the alternative charging piles are comprehensively considered and corrected, the obtained alternative charging pile with the shortest deviation distance can be the optimal charging pile, and the optimal charging pile is recommended to the user.
310. The prompting system outputs the position of the recommended charging pile so as to prompt a user to charge the electric automobile by utilizing the recommended charging pile.
In the embodiment of the present invention, it can be understood that, if only one alternative charging pile is searched out when step 306 is executed, step 307 to step 309 may not be executed, and the searched alternative charging pile is directly output as the recommended charging pile.
Therefore, in the embodiment of the invention, when the actual cruising mileage or the predicted remaining cruising mileage of the electric automobile is less than or equal to the mileage threshold value, the prompting system automatically triggers the charging prompt; and, this suggestion of charging is the position of the electric pile of filling that the suggestion system recommends. The user is directly guided to the position of the charging pile to charge the electric automobile by outputting the recommended position of the charging pile. Further, if the number of the initially searched alternative charging piles is greater than one, the factors of the historical charging times of the alternative charging piles, the number of the current idle charging potentials, user evaluation, charging unit price and the like can be further considered, and the optimal charging pile is selected from the multiple alternative charging piles and recommended to the user.
Example four
Referring to fig. 5, fig. 5 is a schematic structural diagram of a charging prompt system of an electric vehicle according to an embodiment of the present invention. As shown in fig. 5, the charging prompt system of the electric vehicle may include:
an obtaining unit 501, configured to obtain a driving route of an electric vehicle and road information of the driving route;
in the embodiment of the present invention, the road information of the driving route acquired by the acquiring unit 501 may be an average driving time t of the driving route;
the prediction unit 502 is used for predicting the remaining cruising mileage of the electric automobile when the electric automobile reaches the destination of the driving route according to the road information of the driving route and the power consumption parameter of the electric automobile;
in the embodiment of the present invention, the power consumption parameters of the electric vehicle may include, but are not limited to: the total power consumption P of each power consumption unit of the electric vehicle in the current state, and the power consumption per hundred kilometers of the electric vehicle under the standard working condition, such as the power consumption per hundred kilometers A under the NEDC working conditionNEDC。
Prediction unit 502 predicts remaining cruising range D when electric vehicle reaches the destination of travel routeRemaining cruising mileageThe specific calculation formula of (a) can be expressed as follows:
Dremaining cruising mileage＝DCurrent cruising mileage-P*t/ANEDC；
Wherein D isCurrent cruising mileageThe current actual cruising mileage of the electric automobile.
The prompting unit 503 is configured to output a charging prompting message when the remaining cruising mileage is less than or equal to the mileage threshold.
In the embodiment of the present invention, preferably, the obtaining unit 501, the predicting unit 502, and the prompting unit 503 may be triggered to perform the above operations before the electric vehicle runs (for example, when the electric vehicle is ignited and enters the P range), so that it may be determined in advance whether the current actual cruising range can support the current trip when the electric vehicle starts, so as to remind the user of charging the vehicle in advance, and further reduce the risk of insufficient power.
It can be seen that, by implementing the charging prompting system for an electric vehicle shown in fig. 5, the remaining cruising range of the electric vehicle when the electric vehicle travels to the destination according to the travel route of the electric vehicle, the road information of the travel route, and the power consumption parameter of the electric vehicle itself can be predicted, so that when the predicted remaining cruising range is less than or equal to the range threshold, a charging prompting message can be output to prompt the user to charge the vehicle in advance, thereby reducing the risk of insufficient electric quantity of the vehicle, and reducing the problem that the insufficient cruising range of the vehicle is found during the travel.
EXAMPLE five
Referring to fig. 6, fig. 6 is a schematic structural diagram of another charging prompting system for an electric vehicle according to an embodiment of the present invention. The charging presentation system for the electric vehicle shown in fig. 6 is optimized from the charging presentation system for the electric vehicle shown in fig. 5. In the charging presentation system for an electric vehicle shown in fig. 6:
the road information of the travel route acquired by the acquisition unit 501 may include, but is not limited to: 1. the distance d of the driving route; 2. the average running time t of the running route; 3. the average vehicle speed v of the travel route; 4. the road power consumption coefficient k of the travel route. The larger the value of the road power consumption coefficient k is, the larger the influence degree of the road condition of the driving route on the increase of the power consumption of the electric automobile is. For example, k may have a value in the range of [0.8,1.2 ].
The power consumption parameters of the electric vehicle used by the prediction unit 502 may include, but are not limited to: 1. total power P of non-driving power consumption of electric automobile in current stateConsumption of electricity during non-drivingI.e. the total power of the electricity consuming units not related to the driving of the vehicle; 2. electric automobile power consumption A per hundred kilometers under NEDC working conditionNEDC。
Accordingly, the prediction unit 502 may specifically include:
the power consumption calculating subunit 5021 is configured to calculate the predicted power consumption per hundred kilometers of the electric vehicle when the electric vehicle runs on the running route according to the corresponding relationship between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs and the average vehicle speed v of the running route;
a first energy consumption calculating subunit 5022 forMeasuring the electricity consumption per hundred kilometers and the distance d of the driving route, and predicting the pure driving energy consumption E consumed by the electric automobile when the electric automobile drives on the driving routePure drive；
A second energy consumption calculating subunit 5023, configured to calculate a total power P of the electric vehicle without driving according to the average driving time t of the driving route and the total power P of the electric vehicle without drivingConsumption of electricity during non-drivingPredicting the non-driving energy consumption E consumed when the electric vehicle drives on the driving routeNon-driving；
A first mileage calculating subunit 5024 for calculating the energy consumption E according to the pure drivingPure driveEnergy consumption for non-drivingNon-drivingSum, and electric power consumption A per hundred kilometers under standard working conditions of electric vehicleNEDCCalculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route;
as an alternative implementation, the first mileage calculating subunit 5024 may specifically be configured to utilize the road power consumption coefficient k of the driving route to the pure driving energy consumption EPure driveAnd energy consumption without driving ENon-drivingThe sum is corrected to obtain a correction result; and according to the correction result and the electricity consumption A per hundred kilometers under the standard working condition of the electric automobileNEDCAnd calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route. That is, the first mileage calculating subunit 5024 may also add the road power consumption coefficient k as an influence factor when calculating the predicted consumed mileage.
A second mileage calculating subunit 5025, for calculating the actual cruising mileage D of the electric vehicleCurrent driving mileageAnd the predicted consumption mileage, the predicted remaining cruising mileage D when the electric automobile arrives at the destination is determinedRemaining endurance mileage。
In summary, the prediction unit 502 predicts the remaining cruising range D of the electric vehicle when the electric vehicle reaches the destination of the travel routeRemaining cruising mileageThe specific calculation formula of (a) can be expressed as follows:
Dremaining cruising mileage＝DCurrent cruising mileage-(EPure drive+PConsumption of electricity during non-driving*t)*k/ANEDC；
Alternatively, it can be expressed as follows:
Dremaining cruising mileage＝DCurrent cruising mileage-(EPure drive+PConsumption of electricity during non-driving*t)/ANEDC；
Further optionally, in the embodiment of the present invention, the power consumption calculating subunit 5021 may pre-generate the correspondence between the power consumption per hundred kilometers and the vehicle speed of the electric vehicle during actual driving, where the correspondence is called by the power consumption calculating subunit 5021 in an offline state. Specifically, the relevant generation operation may be performed by the following units in the charge presentation system of the electric vehicle:
the acquisition unit 504 is used for acquiring automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
specifically, the collecting unit 504 may collect a travel schedule of each sample vehicle, where each piece of data in the travel schedule is a real-time vehicle speed of the sample vehicle, a corresponding motor torque and a corresponding motor speed at the real-time vehicle speed, and the like; the acquisition unit 504 segments all the strokes according to the speed, and calculates the corresponding automobile driving power consumption under each speed segment, and the specific calculation mode may be: the driving power consumption of the automobile is equal to motor torque and motor rotating speed/9500;
the determining unit 505 is configured to calculate power consumption per hundred kilometers actually generated by the sample vehicle at different real-time speeds according to the real-time speed of the sample vehicle and the vehicle driving power consumption corresponding to the real-time speed; the specific calculation method may be:
Figure BDA0002053538870000191
the fitting unit 506 is configured to perform function fitting on the power consumption per hundred kilometers actually generated by the plurality of sample vehicles at different real-time vehicle speeds to obtain a corresponding relationship between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
Specifically, the fitting unit 506 may divide the collected driving data of the plurality of sample vehicles into a training set and a test set. During trainingThe function f (x) … … ax may be used3+bx2And fitting discrete points in the training set by the + cx + d, and finding out the most matched curve by using a linear algebraic least square method by controlling the coefficient of the highest order term. Meanwhile, the fitted curve needs to be compatible with the discrete points of the test set at the same time, so as to avoid under-fitting and over-fitting conditions. And finally, fitting to obtain a curve with the minimum error, wherein the curve can be used as the corresponding relation between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
Still further optionally, the charging prompt system of the electric vehicle shown in fig. 6 may further include:
a detection unit 507, configured to detect whether a destination where the electric vehicle travels is obtained;
accordingly, the above-mentioned obtaining unit 501 is specifically configured to, when the detection unit 507 obtains the destination, perform the above-mentioned operation of obtaining the driving route of the electric vehicle and the road information of the driving route;
the prompting unit 503 is further configured to output a charging prompting message if the current actual cruising mileage of the electric vehicle is less than or equal to the mileage threshold when the detecting unit 507 does not obtain the destination.
That is, the prompting unit 503 may output the charging prompting message when the actual current cruising range of the electric vehicle is less than or equal to the mileage threshold value, or when the remaining cruising range predicted by the electric vehicle is less than or equal to the mileage threshold value.
It can be seen that, when the charging prompting system for the electric vehicle shown in fig. 6 is implemented, when the driving destination of the electric vehicle is obtained, the possible remaining cruising mileage of the electric vehicle when the electric vehicle reaches the destination can be predicted, so as to prompt the user to charge the electric vehicle in advance; and when the driving destination of the electric automobile is not acquired, the actual cruising mileage of the electric automobile can be monitored, and a user is prompted to charge the electric automobile. Furthermore, the prompting system performs big data mining on actual driving data of a plurality of sample vehicles, and establishes a corresponding relation between the electricity consumption per hundred kilometers and the vehicle speed when the electric vehicle actually drives, so that the prompting system can predict the possible remaining cruising mileage of the electric vehicle more accurately. Furthermore, the road power consumption coefficient of the driving route can be added for correction, and the prediction accuracy is further improved.
EXAMPLE six
Referring to fig. 7, fig. 7 is a schematic structural diagram of a charging prompt system of another electric vehicle according to an embodiment of the disclosure. The charging presentation system for the electric vehicle shown in fig. 7 is optimized from the charging presentation system for the electric vehicle shown in fig. 6. In the charging presentation system for an electric vehicle shown in fig. 7:
the aforementioned prompting unit 503 may specifically include:
a search sub-unit 5031 for searching for a charging pile within a range along the driving route; when the detection unit 507 obtains the destination where the electric vehicle runs, the running route along the range may be: an area formed by the normal lines of each point on the driving route with the current position of the vehicle as a starting point and the destination as an end point, wherein the lengths of the normal lines of each point are the same; when the detection unit 507 does not acquire the destination where the electric vehicle runs, the running route along the range may be: and the distance between the vehicle and the current position of the vehicle is smaller than or equal to the area formed by the position points of the preset distance threshold.
The output sub-unit 5032 is configured to output the position of the charging pile to prompt a user to charge the electric vehicle through the charging pile.
Further optionally, the searching subunit 5031 may include the following modules, not shown in the figure:
the search module is used for searching for alternative charging piles in the range along the driving route;
the determining module is used for determining a first correction coefficient K1 of each alternative charging pile according to the historical charging times of the electric automobile which is charged in the alternative charging pile when the number of the alternative charging piles is more than one; determining a second correction coefficient K2 of the alternative charging pile according to the current idle charging potential number of the alternative charging pile; determining a third correction coefficient K3 of the alternative charging pile according to the user evaluation average score of the alternative charging pile; determining a fourth correction coefficient K4 of the alternative charging pile according to the charging unit price of the alternative charging pile;
in the embodiment of the invention, the value ranges of K1, K2, K3 and K4 may be (0, 1), it can be understood that the value of K1 is smaller as the historical charging times of the alternative charging piles are more, the value of K2 is smaller as the current idle charging bit number of the alternative charging piles is more, the value of K3 is smaller as the user evaluation average score of the alternative charging piles is higher, and the value of K4 is smaller as the charging unit price of the alternative charging piles is lower.
The correction module is used for correcting the deviation distance L of the alternative charging pile from the driving route by using a first correction coefficient K1, a second correction coefficient K2, a third correction coefficient K3 and a fourth correction coefficient K4;
in the embodiment of the present invention, when the alternative charging pile triggers any one of the four conditions, the correction module may multiply the offset distance L by a certain correction coefficient. If a certain condition is not triggered, the value of the correction coefficient corresponding to the condition can be defaulted to 1;
and the selecting module is used for selecting the charging pile with the shortest corrected deviation distance from all the alternative charging piles as the recommended charging pile.
Accordingly, the output sub-unit 5032 is specifically configured to output the position of the recommended charging pile to prompt the user to charge the electric vehicle by using the recommended charging pile.
It can be seen that, when the charging prompting system of the electric vehicle shown in fig. 7 is implemented, the charging prompt may be automatically triggered when the actual cruising range or the predicted remaining cruising range of the electric vehicle is less than or equal to the range threshold; and, this suggestion of charging is the position of the electric pile of filling that the suggestion system recommends. The user can be directly guided to the position of the charging pile to charge the electric automobile by outputting the recommended position of the charging pile. Further, if the number of the initially searched alternative charging piles is greater than one, the factors of the historical charging times of the alternative charging piles, the number of the current idle charging potentials, user evaluation, charging unit price and the like can be further considered, and the optimal charging pile is selected from the multiple alternative charging piles and recommended to the user.
EXAMPLE seven
Referring to fig. 8, fig. 8 is a schematic structural diagram of a charging prompt system of another electric vehicle according to an embodiment of the present invention. As shown in fig. 8, the charging prompt system of the electric vehicle may include:
a memory 701 in which executable program code is stored;
a processor 702 coupled to the memory 701;
the processor 702 calls the executable program code stored in the memory 701 to execute any one of the charging prompting methods for the electric vehicle shown in fig. 1, fig. 2, or fig. 4.
It should be noted that the charging prompting system of the electric vehicle shown in fig. 7 may further include components, which are not shown, such as a power supply, an input key, a speaker, a screen, an RF circuit, a Wi-Fi module, and a bluetooth module, which are not described in detail in this embodiment.
The embodiment of the invention discloses a vehicle which comprises any one of the charging prompt systems of electric automobiles shown in figures 5-8.
The embodiment of the invention discloses a computer-readable storage medium which stores a computer program, wherein the computer program enables a computer to execute any one of the charging prompting methods of an electric automobile shown in fig. 1, fig. 2 or fig. 4.
The embodiment of the invention discloses a computer program product, which comprises a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to make a computer execute any one of the charging prompting methods of electric vehicles shown in fig. 1, fig. 2 or fig. 4.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are exemplary and alternative embodiments, and that the acts and modules illustrated are not required in order to practice the invention.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not imply an inevitable order of execution, and the execution order of the processes should be determined by their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated units, if implemented as software functional units and sold or used as a stand-alone product, may be stored in a computer accessible memory. Based on such understanding, the technical solution of the present invention, which is a part of or contributes to the prior art in essence, or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a memory and includes several requests for causing a computer device (which may be a personal computer, a server, a network device, or the like, and may specifically be a processor in the computer device) to execute part or all of the steps of the above-described method of each embodiment of the present invention.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by hardware instructions of a program, and the program may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM), or other Memory, such as a magnetic disk, or a combination thereof, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
The charging prompting method, the charging prompting system and the vehicle of the electric vehicle disclosed by the embodiment of the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention. Meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (13)

1. A charging prompting method of an electric automobile is characterized by comprising the following steps:
acquiring a driving route of the electric automobile and road information of the driving route, wherein the road information of the driving route comprises: the distance of the driving route, the average driving time of the driving route and the average vehicle speed; the power consumption parameters of the electric automobile comprise: the total power of non-driving power consumption of the electric automobile and the power consumption per hundred kilometers under a standard working condition;
calculating the predicted power consumption per hundred kilometers when the electric automobile runs on the running route according to the corresponding relation between the power consumption per hundred kilometers and the speed of the electric automobile during actual running and the average speed of the running route;
according to the predicted electricity consumption per hundred kilometers and the distance of the driving route, predicting pure driving energy consumption consumed when the electric automobile drives on the driving route;
predicting non-driving energy consumption consumed when the electric automobile drives on the driving route according to the average driving time consumption of the driving route and the total non-driving power consumption of the electric automobile;
calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile;
determining the predicted residual cruising mileage of the electric automobile when the electric automobile reaches the destination according to the current actual cruising mileage of the electric automobile and the predicted consumed mileage;
and when the remaining cruising mileage is less than or equal to the mileage threshold value, outputting a charging prompt message.
2. The method according to claim 1, wherein the road information of the driving route further comprises a road power consumption coefficient of the driving route, and the larger the value of the road power consumption coefficient is, the larger the influence degree of the road condition of the driving route on the increase of the power consumption of the electric vehicle is;
the calculating the predicted consumed mileage when the electric vehicle reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric vehicle comprises the following steps:
correcting the sum of the pure driving energy consumption and the non-driving energy consumption by using the road power consumption coefficient of the driving route to obtain a correction result;
and calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the correction result and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile.
3. The method of claim 1, further comprising:
acquiring automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
calculating the electricity consumption per hundred kilometers actually generated by the sample vehicle under different real-time speeds according to the real-time speed of the sample vehicle and the automobile driving power consumption corresponding to the real-time speed;
and performing function fitting on the power consumption per hundred kilometers actually generated by a plurality of sample vehicles at different real-time speeds to obtain the corresponding relation between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
4. The method of claim 1, further comprising:
detecting whether a destination where the electric automobile runs is obtained or not;
if the road information is acquired, executing the step of acquiring the driving route of the electric automobile and the road information of the driving route;
and if the current actual cruising mileage of the electric automobile is not acquired, outputting a charging prompt message when the current actual cruising mileage of the electric automobile is less than or equal to a mileage threshold value.
5. The method according to any one of claims 1 to 4, wherein the outputting the charging prompt message comprises:
searching charging piles in the range along the driving route;
and outputting the position of the charging pile to prompt a user to utilize the charging pile to charge the electric automobile.
6. The method of claim 5, wherein the searching for charging posts within the range along the driving route comprises:
searching alternative charging piles in the range along the driving route;
when the number of the alternative charging piles is larger than one, determining a first correction coefficient of each alternative charging pile according to the historical charging times of the electric automobile which is charged in the alternative charging pile;
determining a second correction coefficient of the alternative charging pile according to the current idle charging potential number of the alternative charging pile;
determining a third correction coefficient of the alternative charging pile according to the user evaluation average score of the alternative charging pile;
determining a fourth correction coefficient of the alternative charging pile according to the charging unit price of the alternative charging pile;
correcting the deviation distance of the alternative charging pile from the driving route by using the first correction coefficient, the second correction coefficient, the third correction coefficient and the fourth correction coefficient;
selecting the charging pile with the shortest deviation distance after correction from the alternative charging piles as a recommended charging pile;
and, output the position of filling electric pile to the suggestion user utilizes it is right to fill electric automobile charges, include:
and outputting the position of the recommended charging pile to prompt a user to charge the electric automobile by using the recommended charging pile.
7. The utility model provides an electric automobile's suggestion system that charges which characterized in that includes:
an acquisition unit configured to acquire a driving route of the electric vehicle and road information of the driving route, wherein the road information of the driving route includes: the distance of the driving route, the average driving time of the driving route and the average vehicle speed; the power consumption parameters of the electric automobile comprise: the total power of non-driving power consumption of the electric automobile and the power consumption per hundred kilometers under a standard working condition;
the prediction unit comprises a power consumption calculation subunit, a first power consumption calculation subunit, a second power consumption calculation subunit, a first mileage calculation subunit and a second mileage calculation subunit;
the power consumption calculating subunit is configured to calculate power consumption per hundred kilometers predicted when the electric vehicle runs on the running route according to a correspondence between the power consumption per hundred kilometers and a vehicle speed when the electric vehicle actually runs and an average vehicle speed of the running route;
the first energy consumption calculating subunit is configured to predict, according to the predicted power consumption per hundred kilometers and the distance of the driving route, pure driving energy consumption consumed by the electric vehicle when the electric vehicle drives on the driving route;
the second energy consumption calculation subunit is used for predicting the non-driving energy consumption consumed by the electric automobile when the electric automobile drives on the driving route according to the average driving time consumption of the driving route and the total non-driving power consumption of the electric automobile;
the first mileage calculating subunit is used for calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the sum of the pure driving energy consumption and the non-driving energy consumption and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile;
the second mileage calculating subunit is used for determining the predicted remaining cruising mileage of the electric automobile when the electric automobile reaches the destination according to the current actual cruising mileage of the electric automobile and the predicted consumed mileage;
and the prompting unit is used for outputting a charging prompting message when the remaining cruising mileage is less than or equal to the mileage threshold value.
8. The system according to claim 7, wherein the road information of the travel route further includes a road power consumption coefficient of the travel route; the larger the value of the road power consumption coefficient is, the larger the influence degree of the road condition of the driving route on the increase of the power consumption of the electric automobile is;
the first mileage calculating unit is specifically configured to correct the sum of the pure driving energy consumption and the non-driving energy consumption by using a road power consumption coefficient of the driving route to obtain a correction result; and calculating the predicted consumed mileage when the electric automobile reaches the destination of the driving route according to the correction result and the electricity consumption per hundred kilometers under the standard working condition of the electric automobile.
9. The system of claim 7, further comprising:
the acquisition unit is used for acquiring automobile driving power consumption actually generated by a plurality of sample vehicles at different real-time speeds;
the determining unit is used for calculating the electricity consumption per hundred kilometers actually generated by the sample vehicle under different real-time speeds according to the real-time speed of the sample vehicle and the automobile driving power consumption corresponding to the real-time speed;
and the fitting unit is used for performing function fitting on the power consumption per hundred kilometers actually generated by the plurality of sample vehicles under different real-time speeds to obtain the corresponding relation between the power consumption per hundred kilometers and the vehicle speed when the electric vehicle actually runs.
10. The system of claim 7, further comprising:
the detection unit is used for detecting whether a destination where the electric automobile runs is obtained or not;
the obtaining unit is specifically configured to obtain a driving route of the electric vehicle and road information of the driving route when the detection unit obtains the destination;
the prompting unit is further configured to output a charging prompting message if the current actual cruising mileage of the electric vehicle is less than or equal to a mileage threshold value when the destination is not obtained by the detection unit.
11. The system according to any one of claims 7 to 10, wherein the prompting unit comprises:
the searching subunit is used for searching the charging piles within the range along the driving route;
and the output subunit is used for outputting the position of the charging pile so as to prompt a user to utilize the charging pile to charge the electric automobile.
12. The system of claim 11, wherein the search subunit comprises:
the searching module is used for searching the alternative charging piles in the range along the driving route;
the determining module is used for determining a first correction coefficient of the alternative charging piles according to the historical charging times of the electric automobile which is charged in the alternative charging piles for each alternative charging pile when the number of the alternative charging piles is larger than one; determining a second correction coefficient of the alternative charging pile according to the current idle charging potential number of the alternative charging pile; determining a third correction coefficient of the alternative charging pile according to the user evaluation average score of the alternative charging pile; determining a fourth correction coefficient of the alternative charging pile according to the charging unit price of the alternative charging pile;
the correction module is used for correcting the deviation distance of the alternative charging pile from the driving route by using the first correction coefficient, the second correction coefficient, the third correction coefficient and the fourth correction coefficient;
the selection module is used for selecting the charging pile with the shortest deviation distance after correction from the alternative charging piles as a recommended charging pile;
the output subunit is specifically configured to output the position of the recommended charging pile so as to prompt a user to charge the electric vehicle by using the recommended charging pile.
13. A vehicle, characterized by comprising: a system as claimed in any one of claims 7 to 12.
CN201910383128.3A 2019-05-08 2019-05-08 Charging prompting method and system of electric automobile and vehicle Active CN110103719B (en)

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