CN112477606B - New energy refrigerator car endurance mileage estimation method and system - Google Patents
New energy refrigerator car endurance mileage estimation method and system Download PDFInfo
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- CN112477606B CN112477606B CN202011595358.5A CN202011595358A CN112477606B CN 112477606 B CN112477606 B CN 112477606B CN 202011595358 A CN202011595358 A CN 202011595358A CN 112477606 B CN112477606 B CN 112477606B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
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Abstract
The invention discloses a method and a system for estimating the endurance mileage of a new energy refrigerator car, wherein the method comprises the following steps: estimating the power consumption of the cold machine according to the set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage; estimating the running power consumption of the automobile according to the current running condition of the automobile; and estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving. By adopting the technical scheme of the invention, the accuracy of estimating the mileage of the new energy refrigerator car can be improved.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to a method and a system for estimating the endurance mileage of a new energy refrigerator car.
Background
With the vigorous development and popularization of new energy industries in China, new energy automobiles are gradually popularized and developed. In the cold chain transportation industry, new energy refrigerated vehicles occupy an important position. As is well known, the endurance mileage is always a pain point which hinders the development of the electric vehicle due to the popularization of battery research technology and charging piles. The reliable estimation of the maximum driving distance under the condition of no supply of limited battery capacity is particularly important, and for the new energy refrigerated vehicle, as the transported goods have higher requirements on temperature, the reliable estimation of the cruising range can effectively avoid causing great economic loss. At present, most electric vehicles on the market have the function of displaying the remaining endurance mileage, but the new energy refrigerated vehicle is provided with a cold machine, so that the power consumption accounts for a large proportion, and when different goods are transported and in different working states of freezing and refrigerating, the power consumption is greatly different, so that certain difficulty is caused for estimating the endurance mileage of the whole vehicle.
Disclosure of Invention
The invention aims to solve the technical problem that the estimation of the endurance mileage of a new energy refrigerator car in the prior art is inaccurate, and provides a method and a system for estimating the endurance mileage of the new energy refrigerator car.
The embodiment of the invention provides a new energy refrigerator car endurance mileage estimation method, which comprises the following steps:
estimating the power consumption of the cold machine according to the set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage;
estimating the running power consumption of the automobile according to the current running condition of the automobile;
and estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving.
In the embodiment of the invention, the power data of the environment temperature and the set temperature inside and outside the carriage under various working conditions are prestored, and the power data under various working conditions are obtained by the cold machine through experiments under various working conditions.
In the embodiment of the invention, the working condition which is closest to the currently set refrigerating temperature of the refrigerator and the current internal and external environment temperature of the carriage is found by searching in the prestored multiple working conditions, and the power data corresponding to the working condition is used as the power consumption of the refrigerator under the current working condition.
In the embodiment of the invention, the following formula is adopted to estimate the running power consumption P of the automobileVehicle with wheels：
PVehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
In the embodiment of the invention, the driving mileage S of the automobile is estimated by adopting the following formula:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is the capacity of the automobile energy storage battery, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, and PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for the estimated running of the vehicle.
The embodiment of the invention also provides a system for estimating the endurance mileage of the new energy refrigerator car, which comprises the following components:
the refrigerator controller is used for estimating the power consumption of the refrigerator according to the set refrigerating temperature of the refrigerator and the current internal and external ambient temperature of the carriage;
the automobile running power consumption estimation module is used for estimating the running power consumption of the automobile according to the current running condition of the automobile;
and the automobile battery management module is used for estimating the cruising mileage of the automobile according to the estimated power consumption of the cold machine and the driving power consumption.
In the embodiment of the invention, the power data of the internal and external ambient temperatures and the set temperature of the carriage under various working conditions are prestored in the cold machine controller, and the power data under various working conditions are obtained by the experiment of the cold machine under various working conditions.
In the embodiment of the invention, the cold machine controller searches in a plurality of working conditions stored in advance, finds the working condition which is closest to the currently set refrigerating temperature of the cold machine and the current internal and external ambient temperatures of the carriage, and takes the power data corresponding to the working condition as the power consumption of the cold machine under the current working condition.
In the embodiment of the invention, the automobile running power consumption estimation module estimates the running power consumption P of the automobile by adopting the following formula:
Pvehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
In the embodiment of the invention, the automobile battery management module adopts the following formula to estimate the driving mileage S of an automobile:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is the capacity of the automobile energy storage battery, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, and PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for the estimated running of the vehicle.
Compared with the prior art, the method and the system for estimating the cruising mileage of the new energy refrigerator car enable the new energy refrigerator car to obtain the estimated power consumption condition of the refrigerator according to different refrigerating temperatures set by the refrigerator and the external working condition of the unit, and comprehensively obtain the estimated cruising mileage of the refrigerator car by combining the original load power consumption condition of the whole car, so that the accuracy of estimating the mileage of the new energy refrigerator car is greatly improved, a driver can know how far the new energy refrigerator car can travel, and the driving destination and the driving route are planned in advance.
Drawings
Fig. 1 is a schematic structural diagram of a new energy refrigerator car driving range estimation system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a new energy refrigerator car driving range estimation method according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in the embodiment of the present invention, a system for estimating a driving range of a new energy refrigerated vehicle is provided, which includes a cold machine hand operator 1, a cold machine controller 2, an indoor ambient temperature sensor 3, an outdoor ambient temperature sensor 4, an automobile driving power consumption estimation module 5, an automobile battery management module 6, and a driving range display instrument 7. The following description will be made separately.
And the manual refrigerator operator 1 is connected with the refrigerator controller 2 and is used for setting the refrigerating temperature of the refrigerator. And the cold machine controller 2 is used for controlling the refrigerating machine to refrigerate the automobile carriage according to the refrigerating temperature set by the cold machine manual operator 1. The indoor environment temperature sensor 3 and the outdoor environment temperature sensor 4 are connected to the refrigerator controller 2, and are configured to detect the ambient temperatures inside and outside the automobile respectively, and send the ambient temperatures to the refrigerator controller 2.
And the cold machine controller 2 further estimates the power consumption of the cold machine according to the set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage. It should be noted that, because the refrigeration power of the chiller is related to the ambient temperature inside and outside the vehicle compartment and the set refrigeration temperature, the refrigeration power of the chiller is different under different working conditions. Therefore, in the embodiment of the invention, the power data of the environment temperature inside and outside the carriage and the set temperature under various working conditions are stored in the cold machine controller in advance, and the power data under various working conditions are obtained through experiments of the cold machine under various working conditions. In the experimental process, due to the consideration of cost, all the working conditions are not exhausted, but some typical working conditions are tested to obtain the cold machine power data under the working conditions. Therefore, after the refrigerating temperature of the refrigerator is set, when the power consumption of the refrigerator is estimated, the refrigerator controller searches in a plurality of working conditions stored in advance, finds the working condition which is closest to the currently set refrigerating temperature of the refrigerator and the current internal and external ambient temperatures of the carriage, and takes the power data corresponding to the working condition as the power consumption of the refrigerator under the current working condition.
And the automobile running power consumption estimation module 5 is used for estimating the running power consumption of the automobile according to the current running condition of the automobile.
In the embodiment of the invention, the automobile running power consumption estimation module estimates the running power consumption P of the automobile by adopting the following formulaVehicle with wheels：
PVehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
It should be noted that the traction force F of the automobile can be equivalent to the sum of the friction force and the wind resistance of the road surface when the automobile runs, the friction force of the road surface when the automobile runs is related to the full load of the automobile, and the wind resistance is related to the model of the automobile, so that the traction force of the automobile can be estimated through the load data and the model data of the automobile.
And the automobile battery management module 6 is used for estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving.
In the embodiment of the invention, the automobile battery management module 6 estimates the driving mileage S of the automobile by adopting the following formula:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is automobile energy storage electricityThe capacity of the pool, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for estimated vehicle running
It should be noted that, for the car battery, a minimum electric quantity percentage a is generally set to prevent the car from completely moving after the battery is completely discharged, so as to deal with various emergency situations, for example, the electric quantity percentage may be set to 5%.
And the cruising mileage display instrument 7 is used for displaying the remaining cruising mileage of the automobile estimated by the automobile battery management module 6, so that a driver knows how far the automobile can run, and plans a running destination and a running route in advance.
As shown in fig. 2, in the embodiment of the present invention, a new energy refrigerator car driving range estimation method is further provided, which includes steps S1-S3. The following description will be made separately.
Step S1: and estimating the power consumption of the cold machine according to the set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage.
In the embodiment of the invention, the power data of the environment temperature and the set temperature inside and outside the carriage under various working conditions are prestored, and the power data under various working conditions are obtained by the cold machine through experiments under various working conditions. When estimating the power consumption of the cold machine, searching in a plurality of working conditions stored in advance, finding the working condition which is closest to the currently set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage, and taking the power data corresponding to the working condition as the power consumption of the cold machine under the current working condition.
Step S2: and estimating the running power consumption of the automobile according to the current running condition of the automobile.
In the embodiment of the invention, the following formula is adopted to estimate the running power consumption P of the automobileVehicle with wheels：
PVehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
Step S3: and estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving.
In the embodiment of the invention, the driving mileage S of the automobile is estimated by adopting the following formula:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is the capacity of the automobile energy storage battery, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, and PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for the estimated running of the vehicle.
It should be noted that the sequence of step S1 and step S2 is not sequential, and may be executed simultaneously, or step S2 may be executed first, and then step S1 is executed.
In conclusion, by adopting the method and the system for estimating the cruising mileage of the new energy refrigerator car, the new energy refrigerator car can obtain the estimated power consumption condition of the refrigerator according to different refrigerating temperatures set by the refrigerator and the external working condition of the unit, and the estimated driving mileage of the refrigerator car is comprehensively obtained by combining the original load power consumption condition of the whole car, so that the accuracy of estimating mileage driving of the new energy refrigerator car is greatly improved, a driver can know how far the new energy refrigerator car can drive, and a driving destination and a driving route are planned in advance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A new energy refrigerator car endurance mileage estimation method is characterized by comprising the following steps:
estimating the power consumption of the cold machine according to the set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage;
estimating the running power consumption of the automobile according to the current running condition of the automobile;
estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving;
the process of estimating the power consumption of the cold machine comprises the following steps:
the power data of the environment temperature and the set temperature inside and outside the carriage under various working conditions are stored in advance, and the power data under various working conditions are obtained through experiments of the refrigerator under various working conditions;
searching in a plurality of working conditions stored in advance, finding the working condition which is closest to the refrigerating temperature of the refrigerator set at present and the internal and external ambient temperatures of the carriage at present, and taking the power data corresponding to the working condition as the power consumption of the refrigerator under the current working condition.
2. The method for estimating driving mileage of a new energy refrigerator car according to claim 1, wherein the power consumption P for driving the car is estimated by using the following formulaVehicle with wheels：
PVehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
3. The new energy refrigerator car driving range estimation method according to claim 1, wherein the driving range S of the car is estimated by using the following formula:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is the capacity of the automobile energy storage battery, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, and PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for the estimated running of the vehicle.
4. A new energy refrigerator car driving mileage estimation system is characterized by comprising:
the refrigerator controller is used for estimating the power consumption of the refrigerator according to the set refrigerating temperature of the refrigerator and the current internal and external ambient temperature of the carriage;
the automobile running power consumption estimation module is used for estimating the running power consumption of the automobile according to the current running condition of the automobile;
the automobile power management module is used for estimating the endurance mileage of the automobile according to the estimated power consumption of the cold machine and the estimated power consumption during driving;
the power data of the internal and external ambient temperatures of the carriage and the set temperature under various working conditions are prestored in the cold machine controller, the power data under various working conditions are obtained through experiments of the cold machine under various working conditions, the cold machine controller searches in the prestored various working conditions to find the working condition which is closest to the currently set refrigeration temperature of the cold machine and the current internal and external ambient temperatures of the carriage, and the power data corresponding to the working condition are used as the power consumption of the cold machine under the current working condition.
5. The system for estimating driving mileage of a new energy refrigerator car according to claim 4, wherein the vehicle driving power consumption estimation module estimates the driving power consumption P of the vehicle by using the following formulaVehicle with wheels：
PVehicle with wheels=FV，
Wherein V is the driving speed of the automobile, F is the traction of the automobile, and F is obtained by estimating the load data and the model data of the automobile.
6. The new energy refrigerator car range estimation system of claim 4, wherein the car battery management module estimates the car' S driving range S using the formula:
S=C ×η×（1-a）÷（Pcold+PVehicle with wheels）,
Wherein C is the capacity of the automobile energy storage battery, eta is the efficiency of the automobile driving motor, a is the minimum electric quantity percentage of the automobile energy storage battery, and PColdFor estimated power consumed by the cold machine, PVehicle with wheelsConsuming electric power for the estimated running of the vehicle.
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