CN113978316A - Method and device for calculating cruising mileage and storage medium - Google Patents

Method and device for calculating cruising mileage and storage medium Download PDF

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CN113978316A
CN113978316A CN202111227956.1A CN202111227956A CN113978316A CN 113978316 A CN113978316 A CN 113978316A CN 202111227956 A CN202111227956 A CN 202111227956A CN 113978316 A CN113978316 A CN 113978316A
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hydrogen
calculating
vehicle
hydrogen consumption
mileage
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CN113978316B (en
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胡金金
邱东
朱娟
侯欣
李敏
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Weichai Power Co Ltd
Weifang Weichai Power Technology Co Ltd
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Weichai Power Co Ltd
Weifang Weichai Power 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • 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
    • 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
    • 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
    • B60L2260/54—Energy consumption estimation
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Life Sciences & Earth Sciences (AREA)
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Abstract

The application relates to a method and a device for calculating cruising mileage and a storage medium. The method comprises the following steps: judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate; if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage; calculating a second hydrogen consumption rate from the hydrogen consumption amount; calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems; and calculating the mileage of the vehicle which can be continued according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity. The method and the device can accurately calculate the cruising mileage of the hydrogen fuel cell vehicle under the current residual hydrogen so that a user can judge whether fuel needs to be added or not, and the condition that the hydrogen fuel cell vehicle consumes fuel and affects normal running in the running process is avoided.

Description

Method and device for calculating cruising mileage and storage medium
Technical Field
The present disclosure relates to the field of hydrogen fuel and mileage calculation, and more particularly, to a method, an apparatus, and a storage medium for calculating a cruising mileage.
Background
In recent years, new energy vehicles have been rapidly developed, and hydrogen fuel cell vehicles have attracted attention because of their high efficiency and low pollution. The fuel used by the hydrogen fuel cell vehicle is hydrogen gas, and the device for storing the hydrogen gas on the hydrogen fuel cell vehicle is a hydrogen storage system which comprises one or more hydrogen bottles, and the hydrogen gas is stored in the hydrogen bottles in a high-pressure mode. The hydrogen is stored in the hydrogen cylinder in a gaseous state, and the hydrogen in the high-pressure gas cylinder is continuously consumed by the hydrogen fuel cell vehicle in the running process. The hydrogen in the high-pressure gas cylinder is continuously consumed along with the running of the hydrogen fuel cell vehicle, and the cruising range of the hydrogen fuel cell vehicle is gradually reduced unless the hydrogen fuel cell vehicle is subjected to hydrogenation operation.
Because the hydrogen stored in the fuel cell vehicle is limited, the cruising range of the hydrogen fuel cell vehicle under the current residual hydrogen needs to be accurately calculated so as to avoid the condition that the normal running of the hydrogen fuel cell vehicle is influenced by fuel consumption in the running process of the hydrogen fuel cell vehicle.
Disclosure of Invention
Based on the technical problems, the invention aims to calculate the cruising mileage of the vehicle by distinguishing two stages and adopting different calculation modes corresponding to different stages respectively, so that the accuracy of calculating the hydrogen consumption rate can be improved, and the accuracy of calculating the cruising mileage is further improved. And in the second stage, the hydrogen consumption in the static state of the vehicle is removed, so that the situation that the hydrogen consumption rate in the distance section is higher due to the hydrogen consumption in the static state of the vehicle can be prevented.
The invention provides a method for calculating a cruising mileage, which comprises the following steps:
judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage;
calculating a second hydrogen consumption rate from the hydrogen consumption amount;
calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems;
and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
Specifically, the calculating of the hydrogen consumption amount within the traveled interval mileage based on the traveled interval mileage includes:
averagely dividing the traveled interval mileage into N sections, wherein N is a natural number;
and sequentially calculating the hydrogen consumption of the vehicle in the non-static state within N sections of mileage to obtain N hydrogen consumption.
Still more specifically, the calculating of the second hydrogen consumption rate from the hydrogen consumption amount includes:
respectively calculating N corresponding hydrogen consumption rates according to the N hydrogen consumption amounts;
the N hydrogen consumption rates are averaged, and the average value is taken as the second hydrogen consumption rate.
Further, the sequentially calculating hydrogen consumption amounts of the vehicle in the non-stationary state within the N mileage sections to obtain N hydrogen consumption amounts includes:
sequentially calculating the hydrogen consumption of each section of vehicle in a static state within N sections of mileage to obtain N hydrogen consumption;
and (4) subtracting the hydrogen consumption in the static state in each section from the total hydrogen consumption in each section in N sections of mileage to obtain N hydrogen consumptions in the non-static state.
Still further, the total hydrogen consumption and the hydrogen consumption in the static state are both obtained by integrating mass flow consumed by hydrogen, and the calculation method of the mass flow consumed by hydrogen is as follows:
Figure BDA0003314973170000031
wherein dm represents the mass flow rate of hydrogen consumption, n represents the number of cells,
Figure BDA0003314973170000032
indicating the hydrogen metering ratio, I indicating the stack current,
Figure BDA0003314973170000033
represents the hydrogen molar mass, and F represents the Faraday constant.
Further preferably, the calculating the current hydrogen gas remaining amount based on the hydrogen cylinder pressures of the different hydrogen storage systems includes:
calculating the total hydrogen storage amount according to a high-pressure threshold of a hydrogen bottle of the hydrogen storage system;
calculating the hydrogen residual quantity when the hydrogen storage system can not supply hydrogen according to the hydrogen bottle low-pressure threshold value of the hydrogen storage system;
and subtracting the residual amount of the hydrogen when the hydrogen storage system cannot supply the hydrogen from the total hydrogen storage amount to obtain the current residual amount of the hydrogen.
Further still preferably, the method of calculating the total hydrogen storage amount and the remaining amount of hydrogen gas when the hydrogen storage system cannot supply hydrogen gas is:
Figure BDA0003314973170000034
wherein N represents the number of the gas cylinders of the hydrogen storage system, V represents the single-cylinder volume of the hydrogen cylinder, T represents the average temperature of the hydrogen cylinder opening of the hydrogen storage system, and P represents the pressure value of the hydrogen cylinder of the hydrogen storage system.
A second aspect of the invention provides a cruising range calculating apparatus, comprising:
the first module is used for judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
a second module for determining that the vehicle is in a second phase and calculating a hydrogen consumption amount within a traveled interval mileage based on the traveled interval mileage;
a third module for calculating a second hydrogen consumption rate from the hydrogen consumption amount;
the fourth module is used for calculating the current hydrogen residual quantity based on the hydrogen cylinder pressure of different hydrogen storage systems;
and the fifth module is used for calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen surplus or according to the second hydrogen consumption rate and the current hydrogen surplus.
A third aspect of the invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage;
calculating a second hydrogen consumption rate from the hydrogen consumption amount;
calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems;
and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
A fourth aspect of the invention provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:
judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage;
calculating a second hydrogen consumption rate from the hydrogen consumption amount;
calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems;
and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
The beneficial effect of this application does: according to the method and the device, the two stages are distinguished and different calculation modes are adopted corresponding to the different stages respectively, the cruising mileage of the vehicle is calculated, the accuracy of hydrogen consumption rate calculation can be improved, and the accuracy of cruising mileage calculation is improved. And in the second stage, the hydrogen consumption in the static state of the vehicle is removed, so that the situation that the hydrogen consumption rate in the distance section is higher due to the hydrogen consumption in the static state of the vehicle can be prevented. In a word, the method can accurately calculate the cruising mileage of the hydrogen fuel cell vehicle under the current residual hydrogen so that a user can judge whether fuel needs to be added or not, and the condition that the normal running of the hydrogen fuel cell vehicle is influenced by fuel consumption in the running process is avoided.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The present application may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:
FIG. 1 illustrates a schematic diagram of method steps of an exemplary embodiment of the present application;
FIG. 2 illustrates a method flow diagram of an exemplary embodiment of the present application;
FIG. 3 illustrates a graph of interval mileage in an exemplary embodiment of the present application;
FIG. 4 shows a schematic diagram of an apparatus in an exemplary embodiment of the present application;
FIG. 5 is a schematic diagram illustrating an electronic device according to an exemplary embodiment of the present application;
fig. 6 illustrates a schematic diagram of a storage medium provided by an exemplary embodiment of the present application.
Detailed Description
Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present application. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present application. It will be apparent to one skilled in the art that the present application may be practiced without one or more of these details. In other instances, well-known features of the art have not been described in order to avoid obscuring the present application.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. The figures are not drawn to scale, wherein certain details may be exaggerated and omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
Several examples are given below in conjunction with the description of figures 1-6 to describe exemplary embodiments according to the present application. It should be noted that the following application scenarios are merely illustrated for the convenience of understanding the spirit and principles of the present application, and the embodiments of the present application are not limited in this respect. Rather, embodiments of the present application may be applied to any scenario where applicable.
Example 1:
the embodiment implements a method for calculating a cruising range, as shown in fig. 1, including:
s1, judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
s2, if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage;
s3, calculating a second hydrogen consumption rate according to the hydrogen consumption;
s4, calculating the current hydrogen residual quantity based on the hydrogen bottle pressure of different hydrogen storage systems;
and S5, calculating the mileage of the vehicle which can be continued according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
The vehicle herein mainly refers to a fuel cell vehicle, particularly a hydrogen fuel cell vehicle. It should be noted that the hydrogen consumption rate (g/km) is the quotient of the mass of hydrogen consumed over a distance interval and the mileage, i.e. the hydrogen consumption per kilometer, and is expressed in g/km. An apparatus for storing hydrogen gas on a fuel cell vehicle is a hydrogen storage system comprising one or more hydrogen cylinders in which hydrogen gas is stored in a high pressure form. In addition, the first hydrogen consumption rate can be empirically determined as a fixed value because the fuel cell vehicle consumes a relatively small amount of hydrogen or when the vehicle has a relatively small mileage (e.g., a new vehicle) is the first stage.
Specifically, calculating the hydrogen consumption amount within the traveled distance range based on the traveled distance range includes: dividing the traveled interval mileage into N sections averagely, wherein N is a natural number; and sequentially calculating the hydrogen consumption of the vehicle in the non-static state within N sections of mileage to obtain N hydrogen consumption. Preferably, N is 5, and the traveled interval mileage is L, as shown in fig. 2, the interval mileage is divided into 5 segments, and each segment is L/5. As shown in fig. 2, the abscissa is the mileage, and the ordinate is the corresponding hydrogen consumption M [ i ] after the traveled interval mileage is divided into 5 segments, where i is 1 to 5.
In addition, since the distance traveled may span multiple driving cycles, the initial distance traveled for each distance interval may need to be stored in an Erasable Programmable Read-Only Memory (EEPROM) to prevent power loss.
Still more specifically, calculating the second hydrogen consumption rate from the hydrogen consumption amount includes: respectively calculating N corresponding hydrogen consumption rates according to the N hydrogen consumption amounts; the N hydrogen consumption rates are averaged, and the average value is defined as a second hydrogen consumption rate. For example, if there are 5, the average value is calculated as follows:
Figure BDA0003314973170000081
wherein,
Figure BDA0003314973170000082
l represents the distance traveled, M [ i ]]Wherein i is 1 to 5, M1]To M [5 ]]Hydrogen consumption from the first distance interval to the fifth distance interval.
Further, sequentially calculating hydrogen consumption of the vehicle in a non-static state within N mileage sections to obtain N hydrogen consumption, including: sequentially calculating the hydrogen consumption of each section of vehicle in a static state within N sections of mileage to obtain N hydrogen consumption; and (4) subtracting the hydrogen consumption in the static state in each section from the total hydrogen consumption in each section in N sections of mileage to obtain N hydrogen consumptions in the non-static state.
Still further, the total hydrogen consumption and the hydrogen consumption in a static state are both obtained by integrating the mass flow of hydrogen consumption, and the calculation method of the mass flow of hydrogen consumption comprises the following steps:
Figure BDA0003314973170000091
wherein dm represents the mass flow rate of hydrogen consumption, n represents the number of cells,
Figure BDA0003314973170000092
indicating the hydrogen metering ratio, I indicating the stack current,
Figure BDA0003314973170000093
represents the hydrogen molar mass, and F represents the Faraday constant.
Further preferably, the calculating the current hydrogen gas remaining amount based on the hydrogen cylinder pressures of the different hydrogen storage systems includes: calculating the total hydrogen storage amount according to a high-pressure threshold of a hydrogen bottle of the hydrogen storage system; calculating the hydrogen residual quantity when the hydrogen storage system can not supply hydrogen according to the hydrogen bottle low-pressure threshold value of the hydrogen storage system; and subtracting the residual amount of the hydrogen when the hydrogen storage system cannot supply the hydrogen from the total hydrogen storage amount to obtain the current residual amount of the hydrogen.
Further still preferably, the method of calculating the total hydrogen storage amount and calculating the remaining amount of hydrogen gas when the hydrogen storage system cannot supply hydrogen gas is:
Figure BDA0003314973170000094
wherein, N represents the number of the gas cylinders of the hydrogen storage system, and the unit is one; v represents the volume of a hydrogen bottle per bottle, and the unit is L; t represents the average temperature of the hydrogen bottle mouth of the hydrogen storage system and has the unit of; p represents the pressure value of the hydrogen cylinder of the hydrogen storage system in MPa.
Specifically, the different P values are used to calculate the hydrogen residual quantity when the total hydrogen storage quantity is not supplied by the hydrogen storage system, so as to obtainWhen the pressure in the hydrogen bottle in the hydrogen storage system is lower than a certain limit value Pmin, the hydrogen in the hydrogen bottle can not be output any more, and the high-pressure threshold value is substituted into the formula to calculate the total hydrogen storage quantity MH2Because the pressure in the hydrogen cylinder in the hydrogen storage system is lower than a certain limit value PminIn the meantime, the hydrogen in the hydrogen bottle can not be output any more, so that P needs to be addedminSubstituting the formula to obtain MlimThe two are subtracted and divided by the hydrogen consumption rate R, and the formula is as follows:
Figure BDA0003314973170000101
and calculating the mileage of the vehicle which can continue to travel according to the first hydrogen consumption rate and the current hydrogen residual quantity obtained in different stages or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
Example 2:
the embodiment provides a method for calculating a cruising range, as shown in fig. 3, the method includes: judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are both lower than a preset threshold value, if so, judging that the hydrogen consumption rate of the vehicle in the stage 1 is a fixed value r; if not, as shown in FIG. 3, determining that the vehicle is in stage 2 and calculating the hydrogen consumption based on the traveled interval mileage L; calculating a second hydrogen consumption rate from the hydrogen consumption amount; calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems; and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
Specifically, calculating the second hydrogen consumption rate from the hydrogen consumption amount includes: respectively calculating N corresponding hydrogen consumption rates according to the N hydrogen consumption amounts; the N hydrogen consumption rates are averaged, and the average value is defined as a second hydrogen consumption rate. Here, if N is 5, the average value is calculated as follows:
Figure BDA0003314973170000102
wherein,
Figure BDA0003314973170000103
l represents the distance traveled, M [ i ]]Wherein i is 1 to 5, M1]To M [5 ]]Hydrogen consumption from the first distance interval to the fifth distance interval.
Still more specifically, the calculating of the hydrogen consumption amount within the traveled interval mileage based on the traveled interval mileage includes: averagely dividing the traveled interval mileage into 5 sections; and sequentially calculating the hydrogen consumption of the vehicle in the non-static state within 5 mileage sections to obtain 5 hydrogen consumption. The judgment standard for the vehicle to be stationary is as follows: when the vehicle is in a running state but the vehicle speed V is lower than the limit value Vmin, the vehicle is considered to be in a stationary state, and hydrogen gas is consumed in this state, so the hydrogen gas consumption M [ i ] in the non-stationary state of the vehicle in each distance segment is equal to the total hydrogen gas consumption Mtot [ i ] in the distance segment minus the consumption Msat [ i ] of hydrogen gas when the vehicle is stationary. The hydrogen consumption is the integration of the mass flow consumed by the hydrogen no matter whether the hydrogen is static or moving, and the calculation method of the mass flow consumed by the hydrogen comprises the following steps:
Figure BDA0003314973170000111
wherein dm represents the mass flow rate of hydrogen consumption, n represents the number of cells,
Figure BDA0003314973170000112
indicating the hydrogen metering ratio, I indicating the stack current,
Figure BDA0003314973170000113
represents the hydrogen molar mass, and F represents the Faraday constant.
Further preferably, the calculating the current hydrogen gas remaining amount based on the hydrogen cylinder pressures of the different hydrogen storage systems includes: calculating the total hydrogen storage amount according to a high-pressure threshold of a hydrogen bottle of the hydrogen storage system; calculating the hydrogen residual quantity when the hydrogen storage system can not supply hydrogen according to the hydrogen bottle low-pressure threshold value of the hydrogen storage system; and subtracting the residual amount of the hydrogen when the hydrogen storage system cannot supply the hydrogen from the total hydrogen storage amount to obtain the current residual amount of the hydrogen.
Further still preferably, the method of calculating the total hydrogen storage amount and calculating the remaining amount of hydrogen gas when the hydrogen storage system cannot supply hydrogen gas is:
Figure BDA0003314973170000114
wherein, N represents the number of the gas cylinders of the hydrogen storage system, and the unit is one; v represents the volume of a hydrogen bottle per bottle, and the unit is L; t represents the average temperature of the hydrogen bottle mouth of the hydrogen storage system and has the unit of; p represents the pressure value of the hydrogen cylinder of the hydrogen storage system in MPa.
Specifically, the residual amount of hydrogen when the hydrogen storage system can not supply hydrogen is obtained by different P values, the hydrogen in the hydrogen cylinder can not be output when the pressure in the hydrogen cylinder in the hydrogen storage system is lower than a certain limit value Pmin, and the total hydrogen storage amount M is obtained by substituting the high-pressure threshold value into the formulaH2Because the pressure in the hydrogen cylinder in the hydrogen storage system is lower than a certain limit value PminIn the meantime, the hydrogen in the hydrogen bottle can not be output any more, so that P needs to be addedminSubstituting the formula to obtain MlimThe two are subtracted and divided by the hydrogen consumption rate R, and the formula is as follows:
Figure BDA0003314973170000121
and calculating the mileage of the vehicle which can continue to travel according to the first hydrogen consumption rate and the current hydrogen residual quantity obtained in different stages or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
According to the method and the device, the two stages are distinguished and different calculation modes are adopted corresponding to the different stages respectively, the cruising mileage of the vehicle is calculated, the accuracy of hydrogen consumption rate calculation can be improved, and the accuracy of cruising mileage calculation is improved. And in the second stage, the hydrogen consumption in the static state of the vehicle is removed, so that the situation that the hydrogen consumption rate in the distance section is higher due to the hydrogen consumption in the static state of the vehicle can be prevented. In a word, the method can accurately calculate the cruising mileage of the hydrogen fuel cell vehicle under the current residual hydrogen so that a user can judge whether fuel needs to be added or not, and the condition that the normal running of the hydrogen fuel cell vehicle is influenced by fuel consumption in the running process is avoided.
Example 3:
the embodiment provides a calculation device of cruising range, as shown in fig. 4, the device includes:
the first module 401 is configured to determine whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are both lower than a preset threshold, and if yes, determine that the vehicle is in a first stage and obtain a first hydrogen consumption rate;
a second module 402 for determining that a vehicle is in a second phase and calculating a hydrogen consumption amount within a traveled interval based on the traveled interval;
a third module 403 for calculating a second hydrogen consumption rate from the hydrogen consumption amount;
a fourth module 404 for calculating a current hydrogen gas remaining amount based on hydrogen cylinder pressures of different hydrogen storage systems;
a fifth module 405, configured to calculate a mileage that the vehicle can continue to travel according to the first hydrogen consumption rate and the current remaining amount of hydrogen or according to the second hydrogen consumption rate and the current remaining amount of hydrogen.
Reference is now made to fig. 5, which is a schematic diagram illustrating an electronic device provided in some embodiments of the present application. As shown in fig. 5, the electronic device 2 includes: the system comprises a processor 200, a memory 201, a bus 202 and a communication interface 203, wherein the processor 200, the communication interface 203 and the memory 201 are connected through the bus 202; the memory 201 stores a computer program that can be executed on the processor 200, and the processor 200 executes the computer program to perform the method for calculating the cruising range provided by any one of the preceding embodiments of the present application, where the electronic device may be an electronic device with a touch-sensitive display.
The Memory 201 may include a high-speed Random Access Memory (RAM) and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 203 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
Bus 202 can be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 201 is used for storing a program, and the processor 200 executes the program after receiving an execution instruction, and the method for calculating the cruising range disclosed by any one of the embodiments of the present application may be applied to the processor 200, or implemented by the processor 200.
The processor 200 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 200. The Processor 200 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 201, and the processor 200 reads the information in the memory 201 and completes the steps of the method in combination with the hardware thereof.
The electronic equipment provided by the embodiment of the application and the method for calculating the cruising mileage provided by the embodiment of the application have the same beneficial effects as the method adopted, operated or realized by the electronic equipment.
Referring to fig. 6, the computer-readable storage medium shown in fig. 6 is an optical disc 30, and a computer program (i.e., a program product) is stored on the optical disc 30, and when being executed by a processor, the computer program executes the method for calculating the cruising range provided by any of the foregoing embodiments.
In addition, examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory, or other optical and magnetic storage media, which are not described in detail herein.
The computer-readable storage medium provided by the above-mentioned embodiment of the present application and the quantum key distribution channel allocation method in the spatial division multiplexing optical network provided by the embodiment of the present application have the same inventive concept, and have the same beneficial effects as the method adopted, run, or implemented by the application program stored in the computer-readable storage medium.
Embodiments of the present application further provide a computer program product, which includes a computer program, when executed by a processor, implementing the steps of the method for calculating a cruising range provided in any of the foregoing embodiments, the steps of the method including: judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate; if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage; calculating a second hydrogen consumption rate from the hydrogen consumption amount; calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems; and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
It should be noted that: the algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose devices may be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. In addition, this application is not directed to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of the present application as described herein, and any descriptions of specific languages are provided above to disclose the best modes of the present application. In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification, and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except that at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification may be replaced by an alternative feature serving the same, equivalent or similar purpose, unless expressly stated otherwise.
The various component embodiments of the present application may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the creation apparatus of a virtual machine according to embodiments of the present application. The present application may also be embodied as an apparatus or device program for carrying out a portion or all of the methods described herein. A program implementing the application may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for calculating a cruising range, comprising:
judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
if not, determining that the vehicle is in the second stage and calculating the hydrogen consumption in the traveled interval mileage based on the traveled interval mileage;
calculating a second hydrogen consumption rate from the hydrogen consumption amount;
calculating the current hydrogen residual quantity based on the hydrogen bottle pressures of different hydrogen storage systems;
and calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen residual quantity or according to the second hydrogen consumption rate and the current hydrogen residual quantity.
2. The method of calculating a cruising range according to claim 1, wherein the calculating a hydrogen consumption amount within the traveled interval range based on the traveled interval range includes:
averagely dividing the traveled interval mileage into N sections, wherein N is a natural number;
and sequentially calculating the hydrogen consumption of the vehicle in the non-static state within N sections of mileage to obtain N hydrogen consumption.
3. The method of calculating range according to claim 2, wherein the calculating a second hydrogen consumption rate from the hydrogen consumption amount includes:
respectively calculating N corresponding hydrogen consumption rates according to the N hydrogen consumption amounts;
the N hydrogen consumption rates are averaged, and the average value is taken as the second hydrogen consumption rate.
4. The method for calculating the cruising range according to claim 3, wherein the sequentially calculating the hydrogen consumption of the vehicle in the non-static state within the N mileage sections to obtain N hydrogen consumption comprises:
sequentially calculating the hydrogen consumption of each section of vehicle in a static state within N sections of mileage to obtain N hydrogen consumption;
and (4) subtracting the hydrogen consumption in the static state in each section from the total hydrogen consumption in each section in N sections of mileage to obtain N hydrogen consumptions in the non-static state.
5. The method of calculating the cruising range according to claim 4, wherein the total hydrogen consumption and the hydrogen consumption in the stationary state are integrated with a mass flow rate of hydrogen consumption, and the mass flow rate of hydrogen consumption is calculated by:
Figure FDA0003314973160000021
wherein dm represents the mass flow rate of hydrogen consumption, n represents the number of cells,
Figure FDA0003314973160000023
indicating the hydrogen metering ratio, I indicating the stack current,
Figure FDA0003314973160000024
represents the hydrogen molar mass, and F represents the Faraday constant.
6. The method for calculating the cruising range according to claim 1, wherein the calculating the current hydrogen remaining amount based on the hydrogen cylinder pressures of the different hydrogen storage systems comprises:
calculating the total hydrogen storage amount according to a high-pressure threshold of a hydrogen bottle of the hydrogen storage system;
calculating the hydrogen residual quantity when the hydrogen storage system can not supply hydrogen according to the hydrogen bottle low-pressure threshold value of the hydrogen storage system;
and subtracting the residual amount of the hydrogen when the hydrogen storage system cannot supply the hydrogen from the total hydrogen storage amount to obtain the current residual amount of the hydrogen.
7. The method for calculating the cruising range according to claim 6, wherein the method for calculating the total hydrogen storage amount and the remaining amount of hydrogen gas when the hydrogen storage system cannot supply hydrogen gas comprises:
Figure FDA0003314973160000022
wherein N represents the number of the gas cylinders of the hydrogen storage system, V represents the single-cylinder volume of the hydrogen cylinder, T represents the average temperature of the hydrogen cylinder opening of the hydrogen storage system, and P represents the pressure value of the hydrogen cylinder of the hydrogen storage system.
8. A cruising range computing apparatus, comprising:
the first module is used for judging whether the total hydrogen consumption of the vehicle and the total driving mileage of the vehicle are lower than a preset threshold value or not, if so, judging that the vehicle is in a first stage and obtaining a first hydrogen consumption rate;
a second module for determining that the vehicle is in a second phase and calculating a hydrogen consumption amount within a traveled interval mileage based on the traveled interval mileage;
a third module for calculating a second hydrogen consumption rate from the hydrogen consumption amount;
the fourth module is used for calculating the current hydrogen residual quantity based on the hydrogen cylinder pressure of different hydrogen storage systems;
and the fifth module is used for calculating the mileage of the vehicle which can continue the journey according to the first hydrogen consumption rate and the current hydrogen surplus or according to the second hydrogen consumption rate and the current hydrogen surplus.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
10. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method according to any of claims 1-7 when executed by a processor.
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