CN116620116A - Whole-vehicle hydrogen consumption estimation system and method for hydrogen fuel cell - Google Patents
Whole-vehicle hydrogen consumption estimation system and method for hydrogen fuel cell Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 298
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 298
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 292
- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 77
- 230000008859 change Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
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- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
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- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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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
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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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/50—Control modes by future state prediction
- B60L2260/54—Energy consumption estimation
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Abstract
The invention relates to the technical field of battery control, and provides a system and a method for estimating the hydrogen consumption of a whole hydrogen fuel cell, wherein the system comprises the following steps: acquiring a pressure signal of a hydrogen system of a vehicle and a current temperature signal of the hydrogen system; controlling hydrogenation according to hydrogenation conditions, and determining the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal; based on an ideal state equation, calculating the residual quantity of hydrogen in a hydrogen system of the vehicle according to a hydrogen system pipeline pressure signal and a hydrogen system temperature signal at the end of mileage to be measured; converting the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery; and calculating to obtain hundred kilometers of hydrogen consumption according to the hydrogenation amount, the residual hydrogen amount and the converted hydrogen consumption of the power battery in the mileage to be measured. The system and the method take the states of the whole vehicle power battery system, the fuel battery system and the hydrogen system into consideration in multiple dimensions, estimate the hundred kilometers of hydrogen consumption of the whole vehicle of the fuel battery, improve the accuracy of hydrogen consumption estimation and are beneficial to improving the whole vehicle performance of the hydrogen fuel battery.
Description
Technical Field
The disclosure relates to the technical field of battery control, in particular to a system and a method for estimating the hydrogen consumption of a whole hydrogen fuel cell.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fuel cell is used as a clean energy source with high chemical reaction conversion rate, high specific power and no pollution, and is widely applied to road vehicles in recent years. Compared with the traditional fuel oil and pure electric vehicles, the fuel cell vehicle has wider driving mileage and no pollution in the whole running period. Hydrogen gas is used as the fuel cell anode reactant, and hydrogen gas is supplied from a hydrogen bottle during the fuel cell reaction to maintain the operation of the fuel cell system.
The evaluation index of the whole car economy of the hydrogen fuel cell is hydrogen consumption, the hydrogen is consumed in the running process of the car, the hydrogen cost and the selling price are higher, the price of 1 kilogram of hydrogen on the market is 60-70 yuan currently, if a 4 hydrogen bottle group is taken as an example, the hydrogen consumption is about 2000 yuan, so that the hydrogen consumption becomes one of key influencing factors of the economy, and the whole car matching and design rationality arguments are provided according to the hydrogen consumption index, thereby improving the performance of the whole car. The inventor finds that the current vehicle hydrogen consumption determination method does not consider whether hydrogenation exists in a calculation period or whether hydrogenation problem cannot be accurately judged, so that hydrogen consumption estimation is inaccurate.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a system and a method for estimating the hydrogen consumption of a whole hydrogen fuel cell, which can accurately and conveniently estimate the hydrogen consumption evaluation index.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
one or more embodiments provide a hydrogen consumption determining method for a hydrogen fuel cell whole vehicle, including the steps of:
acquiring a pressure signal of a hydrogen system of a vehicle and a current temperature signal of the hydrogen system;
controlling hydrogenation according to hydrogenation conditions, and determining the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
based on an ideal state equation, calculating the residual quantity of hydrogen in a hydrogen system of the vehicle according to a hydrogen system pipeline pressure signal and a hydrogen system temperature signal at the end of mileage to be measured;
converting the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
and calculating to obtain hundred kilometers of hydrogen consumption according to the hydrogenation amount, the residual hydrogen amount and the converted hydrogen consumption of the power battery in the mileage to be measured.
One or more embodiments provide a hydrogen fuel cell whole vehicle hydrogen consumption determination system including:
and a monitoring module: configured to acquire a vehicle hydrogen system pressure signal, and a hydrogen system current temperature signal;
and a judging module: the hydrogenation control device is configured to control hydrogenation according to hydrogenation conditions, and determine the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
and a conversion module: is configured to convert the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
the calculation module: and the hydrogen consumption is calculated to obtain hundred kilometers according to the hydrogenation amount, the residual hydrogen amount and the conversion hydrogen consumption of the power battery in the mileage to be measured.
An electronic device comprising a memory and a processor and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps of the method described above.
A computer readable storage medium storing computer instructions which, when executed by a processor, perform the steps of the method described above.
Compared with the prior art, the beneficial effects of the present disclosure are:
in the present disclosure, the hydrogen consumption is from the perspective of the fuel cell system, but not limited to the consumption of the fuel cell, but also relates to various factors such as the conversion of the power cell, the hydrogenation in the middle and the like; the hydrogen consumption estimation method under hydrogenation and non-hydrogenation states is provided, the states of a whole vehicle power battery system, a fuel battery system and a hydrogen system are considered in a multi-dimensional manner, the hydrogen consumption of the whole vehicle of the fuel battery is estimated, the accuracy of hydrogen consumption estimation can be improved, and therefore the matching performance of the power of the fuel battery and the electric quantity of the power battery is comprehensively estimated, and the improvement of the whole vehicle performance of the hydrogen fuel battery is facilitated.
The advantages of the present disclosure, as well as those of additional aspects, will be described in detail in the following detailed description of embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain and do not limit the disclosure.
FIG. 1 is a flow chart of a method of embodiment 1 of the present disclosure;
fig. 2 is a system block diagram of embodiment 2 of the present disclosure.
Detailed Description
The disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof. It should be noted that, without conflict, the various embodiments and features of the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
Example 1
In one or more embodiments, as shown in fig. 1, a method for determining hydrogen consumption of a hydrogen fuel cell whole vehicle includes the following steps:
step 1, acquiring a pressure signal of a hydrogen system of a vehicle and a current temperature signal of the hydrogen system;
step 2, controlling hydrogenation according to hydrogenation conditions, and determining the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
step 3, calculating the residual quantity of hydrogen in the hydrogen system of the vehicle according to the hydrogen system pipeline pressure signal and the hydrogen system temperature signal at the end of the mileage to be measured based on an ideal state equation;
step 4, converting the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
and 5, calculating to obtain hundred kilometers of hydrogen consumption according to the hydrogenation amount, the residual hydrogen amount and the conversion hydrogen consumption of the power battery in the mileage to be measured.
In this embodiment, the hydrogen consumption is from the point of view of the fuel cell system, but not limited to the consumption of the fuel cell itself, but also relates to various factors such as the conversion of the power cell, the hydrogenation in the middle, and the like; the hydrogen consumption estimation method under hydrogenation and non-hydrogenation states is provided, the states of a whole vehicle power battery system, a fuel battery system and a hydrogen system are considered in a multi-dimensional manner, the hydrogen consumption of the whole vehicle of the fuel battery is estimated, the accuracy of hydrogen consumption estimation can be improved, and therefore the matching performance of the power of the fuel battery and the electric quantity of the power battery is comprehensively estimated, and the improvement of the whole vehicle performance of the hydrogen fuel battery is facilitated.
Firstly, initializing a vehicle system before the operation of a hydrogen system, turning ON a mechanical power hand-pulling switch of the whole vehicle and an ACC rocker of the power supply, and then rotating an ignition key to an ON gear, wherein a whole vehicle controller and the hydrogen controller supply power at low voltage, and a controller CAN message is normally received and sent in a low-voltage state;
the ignition key continues to rotate to a start gear, the whole vehicle is ready at high voltage, the FC rocker switch is pressed down, the VCU sends a starting control command to the FCU, and the whole vehicle is powered on at normal electricity, high voltage electricity and low voltage electricity in sequence to turn on the hydrogen switch; the fuel cell enters a normal running state after being sequentially started (Powerup), standby state, start-up self-check and in a starting state. The hydrogen system control signal (FCU) determines a target range in response to a power request response from the Vehicle Control Unit (VCU).
Alternatively, a hydrogen pressure signal on a hydrogen system line may be collected, preferably, a pressure signal at a main valve of the hydrogen system may be collected as a hydrogen system pressure signal.
Specifically, the hydrogen system can be generally provided with two pressure sensors, which are respectively positioned on the pipeline between the main valve of the hydrogen system and the rear end of the pressure reducing electromagnetic valve to the inlet of the electric pile, and the high pressure and low pressure states of the pipeline of the hydrogen system are monitored.
Wherein the hydrogen bottle is a gas cylinder for storing compressed hydrogen in a hydrogen system.
Further, the electrical signal of the pressure sensor is converted into a digital quantity, and the range of the digital quantity with normal output pressure is as follows: the digital quantity of the pressure sensor is not less than 350 and not more than 3800. The detected hydrogen system pressure value can also be sent to the whole vehicle controller.
In step 1, the maximum value of the measured temperatures of all hydrogen bottles is used as the current temperature signal of the hydrogen system.
The hydrogen bottle hydrogen system temperature sensor is determined according to the number of hydrogen bottles, the temperature sensor is arranged at the bottle mouth of each hydrogen bottle, the hydrogen temperature sensor monitors the temperature of each hydrogen bottle of the hydrogen system in real time, and the temperatures of the hydrogen bottles are compared to obtain the maximum value of the temperature, namely the current temperature value of the hydrogen system.
Further, the electric signal of the temperature sensor is converted into a digital quantity, and the normal range of the digital quantity of the temperature sensor is as follows: the digital quantity of the pressure sensor is less than or equal to 300 and less than or equal to 3900, and when the output temperature of the sensor is normal, the temperature sensor can acquire the highest temperature value of the hydrogen bottle and can be used as the temperature value of the hydrogen system to be sent to the whole vehicle controller.
In this embodiment, the normal range of the digital pressure signal quantity and the digital temperature signal quantity is given, and the abnormal value can be determined according to the normal range, so that the accuracy of the pressure signal and the temperature signal is improved, and the accuracy of estimating the hydrogen consumption is improved.
In the step 2, the hydrogenation condition can be a threshold value of the hydrogen allowance, and the instrument displays the hydrogen allowance shortage early warning when the hydrogen allowance is lower than a first threshold value, and the fuel cell system is automatically shut down when the hydrogen allowance is lower than a second threshold value; the first threshold is greater than the second threshold.
The first threshold value is the corresponding hydrogen amount when the hydrogen pressure value of the hydrogen surplus is lower than 11% of the pressure in the full hydrogen state, and the second threshold value is the corresponding hydrogen amount when the hydrogen pressure value of the hydrogen surplus is lower than 9% of the pressure in the full hydrogen state.
Further, whether hydrogenation is performed or not is judged through the detected values of the pressure signal and the temperature signal of the hydrogen system, and the single hydrogenation amount is calculated based on an ideal gas state equation through the temperature change and the pressure change before and after hydrogenation, wherein the total hydrogenation amount is the sum of a plurality of hydrogenation amounts.
The mass of hydrogen in the hydrogen system is calculated according to an ideal gas state equation, and a specific calculation formula is as follows:
wherein M is hydrogen mass, V is a fixed value, namely hydrogen volume of a hydrogen bottle, P is hydrogen pressure, T is hydrogen temperature, and alpha is compression coefficient; the corresponding hydrogen mass at a certain P and T state is related to the compression coefficient α.
Specifically, the hydrogen mass before and after hydrogenation can be calculated by collecting the hydrogen pressure and the hydrogen temperature before hydrogenation, and the difference value is the hydrogenation amount.
In the embodiment, the pressure of the hydrogen system in the full hydrogen state is 35MPa, and when the hydrogen pressure value of the hydrogen residual quantity is lower than 11% of the pressure in the full hydrogen state, the instrument displays the early warning of the hydrogen residual quantity shortage; when the hydrogen pressure value of the hydrogen allowance is lower than 9% of the pressure in the full hydrogen state, the fuel cell system is automatically shut down; whether hydrogenation is required or not can be judged according to the hydrogen residual quantity.
The hydrogen system controller (FCU) sends the residual percentage of the hydrogen to the whole vehicle controller, the residual of the hydrogen system determines the hydrogen pressure, and the hydrogen pressure is one of the influencing factors for determining the quality; the remaining hydrogen system amount also determines to some extent whether the hydrogen system is operating continuously.
In some embodiments, a mileage starting point L is selected, a pressure value at a main valve of the hydrogen system detected by the pressure sensor is taken as a pressure value of the hydrogen system and is marked as P, and the highest value of all bottle valve temperatures detected by the temperature sensor is taken as a temperature value of the hydrogen system and is marked as T; the hydrogen mass in the initial state can be calculated by an ideal gas state equation calculation formula.
Further, before the first hydrogenation, the hydrogen system pressure value detected by the pressure sensor is recorded as P1; the temperature value of the hydrogen system detected by the temperature sensor is recorded as T1; the mass of hydrogen before the first hydrogenation can be calculated by calculating the formula (1) according to the ideal gas state equation.
Further, after the first hydrogenation, the hydrogen system pressure value detected by the pressure sensor is recorded as P2; the temperature value of the hydrogen system detected by the temperature sensor is recorded as T2; the hydrogen mass after the first hydrogenation can be calculated by calculating the formula (1) according to the ideal gas state equation.
Further, the corresponding hydrogen system pressure PN and the corresponding hydrogen system temperature TN of the hydrogenation times N in the specified mileage can still be acquired by using the pressure sensor and the temperature sensor; the hydrogen mass before the nth hydrogenation can be calculated by calculating the formula (1) according to the ideal gas state equation.
Further, selecting a mileage ending point Ln+1, wherein the hydrogen system pressure value detected by the pressure sensor is recorded as Pn+1, and the hydrogen system temperature value detected by the temperature sensor is recorded as Tn+1; the final hydrogen mass can be calculated by calculating equation (1) for the ideal gas state equation.
And calculating the residual hydrogen mass in the hydrogen bottle according to the hydrogen volume, the hydrogen pressure, the hydrogen temperature and the gas compression factor, wherein if no hydrogen is filled in the middle, the hydrogen consumption is the sum of the hydrogen consumption of the fuel cell and the hydrogen consumption corresponding to the SOC change of the power cell, and if the hydrogen is filled in the middle, the hydrogen consumption is the sum of the hydrogen consumption of the fuel cell, the hydrogen filling mass and the hydrogen consumption corresponding to the SOC change of the power cell.
In some embodiments, the fuel cell hydrogen consumption is: the hydrogen mass of the hydrogen system before the test is subtracted from the hydrogen mass of the hydrogen system after the test is completed.
The mass of hydrogen in the hydrogen system is calculated according to an ideal gas state equation, and a specific calculation formula is as follows:
wherein M is hydrogen mass, V is a fixed value, namely hydrogen volume of a hydrogen bottle, P is hydrogen pressure, T is hydrogen temperature, and alpha is compression coefficient; the corresponding hydrogen mass at a certain P and T state is related to the compression coefficient α.
The volume of a hydrogen bottle corresponding to the 35MPa hydrogen system is 40L, the FCU sends the hydrogen volume, the hydrogen pressure, the hydrogen temperature and the gas compression factor to the whole vehicle controller, and the whole vehicle controller calculates the hydrogen quality according to the parameters.
When the whole vehicle runs in a large mileage or high power, the output power of the fuel cell system is insufficient to support the power requirement of the whole vehicle, and the rest part is provided by the output power of the power cell to continue running of the whole vehicle. The hydrogen consumption is mainly consumed by the fuel cell, and the hydrogen consumption of the whole vehicle during operation can be accurately estimated and monitored by combining the electric energy-hydrogen energy conversion part for estimation.
In some embodiments, the power battery is used as a fuel cell replacement energy source, when the power of the fuel battery does not meet the requirement, part of the electric quantity of the power battery is consumed for the whole vehicle, the hydrogen consumption corresponding to the SOC variation of the power battery is calculated according to the state of charge variation values of the power battery before and after the test, and the state of charge variation value of the power battery and the hydrogen consumption mass M d Corresponding toThe relation formula is:
wherein SOCch is the difference of the start and stop values of the SOC of the power battery, C 0 Is the total electric quantity of the power battery, m 1 The power consumption corresponds to the unit hydrogen consumption.
When the total electric quantity of the power battery is 105.82kW.h, each 16kW.h electric quantity corresponds to 1kg of hydrogen, and the hydrogen consumption calculation formula corresponding to the power consumption of the power battery is as follows:
further, if the pressure of the remaining hydrogen is always greater than 11% of the pressure in the full hydrogen state, hydrogen is not required to be added, and hydrogen consumption=fuel cell hydrogen consumption+hydrogen consumption corresponding to the change of the power cell SOC; if the amount of hydrogen is less than 11%, the hydrogen consumption=the fuel cell hydrogen consumption amount+the hydrogen filling mass+the hydrogen consumption amount corresponding to the power cell SOC change is required.
Further, for single hydrogenation identification, a hydrogen change threshold A is set, if the hydrogenation quality calculated by hydrogenation exceeds the threshold A, the whole vehicle controller identifies that the hydrogenation is successful once, then the data is read, and the hydrogenation quality is smaller than the threshold A, so that the hydrogenation is judged to be unsuccessful.
Because hydrogen is influenced by temperature factors, the gas is heated and expanded, the calculation of the hydrogen quality is inaccurate, a hydrogen change threshold is set, whether the hydrogenation is functional or not is judged to exclude the influence of calculation errors, and the hydrogenation can not be misjudged under the condition of no hydrogenation.
Further, the calculation method of hydrogen consumption per kilometer comprises the following steps: firstly, calculating hydrogen consumption per kilometer, which is the ratio of the hydrogen consumption generated in the whole driving test mileage to a target mileage, wherein the target mileage is Ln+1-L, and the hundred kilometers of hydrogen consumption is multiplied by 100 on the basis of the hydrogen consumption per kilometer.
Example 2
Based on embodiment 1, there is provided a hydrogen consumption determining system of a hydrogen fuel cell whole vehicle in this embodiment, as shown in fig. 2, including:
and a monitoring module: configured to acquire a vehicle hydrogen system pressure signal, and a hydrogen system current temperature signal;
and a judging module: the hydrogenation control device is configured to control hydrogenation according to hydrogenation conditions, and determine the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
and a conversion module: is configured to convert the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
the calculation module: and the hydrogen consumption is calculated to obtain hundred kilometers according to the hydrogenation amount, the residual hydrogen amount and the conversion hydrogen consumption of the power battery in the mileage to be measured.
Alternatively, the monitoring module may include a pressure monitoring module and a temperature monitoring module, where the pressure monitoring module obtains a pressure signal of the hydrogen system of the vehicle, and the temperature monitoring module obtains a current temperature signal of the hydrogen system.
The software system of the embodiment may be implemented in one controller or may be implemented by multiple controllers, and optionally, the pressure monitoring module, the temperature monitoring module, the judging module and the calculating module may be set in a hydrogen system controller, and the converting module may be set in a fuel system controller, so that overall monitoring, data transmission and display control are performed by the whole vehicle controller.
Example 3
The present embodiment provides an electronic device comprising a memory and a processor, and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps recited in the method of embodiment 1.
Example 4
The present embodiment provides a computer readable storage medium storing computer instructions that, when executed by a processor, perform the steps of the method of embodiment 1.
The electronic device provided by the present disclosure may be a mobile terminal and a non-mobile terminal, where the non-mobile terminal includes a desktop computer, and the mobile terminal includes a Smart Phone (such as an Android Phone, an IOS Phone, etc.), a Smart glasses, a Smart watch, a Smart bracelet, a tablet computer, a notebook computer, a personal digital assistant, and other mobile internet devices capable of performing wireless communication.
It should be appreciated that in this disclosure, the processor may be a central processing unit, CPU, the processor may also be other general purpose processors, digital signal processors, DSPs, application specific integrated circuits, ASICs, off-the-shelf programmable gate arrays, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may include read only memory and random access memory and provide instructions and data to the processor, and a portion of the memory may also include non-volatile random access memory. For example, the memory may also store information of the device type.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the present disclosure may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein. Those of ordinary skill in the art will appreciate that the elements of the various examples described in connection with the embodiments disclosed herein, i.e., the algorithm steps, can be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units is merely a division of one logic function, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in essence or a part contributing to the prior art or a part of the technical solution, or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing description of the preferred embodiments of the present disclosure is provided only and not intended to limit the disclosure so that various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
While the specific embodiments of the present disclosure have been described above with reference to the drawings, it should be understood that the present disclosure is not limited to the embodiments, and that various modifications and changes can be made by one skilled in the art without inventive effort on the basis of the technical solutions of the present disclosure while remaining within the scope of the present disclosure.
Claims (10)
1. The method for determining the hydrogen consumption of the whole hydrogen fuel cell is characterized by comprising the following steps of:
acquiring a pressure signal of a hydrogen system of a vehicle and a current temperature signal of the hydrogen system;
controlling hydrogenation according to hydrogenation conditions, and determining the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
based on an ideal state equation, calculating the residual quantity of hydrogen in a hydrogen system of the vehicle according to a hydrogen system pipeline pressure signal and a hydrogen system temperature signal at the end of mileage to be measured;
converting the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
and calculating to obtain hundred kilometers of hydrogen consumption according to the hydrogenation amount, the residual hydrogen amount and the converted hydrogen consumption of the power battery in the mileage to be measured.
2. The hydrogen consumption determining method for a hydrogen fuel cell whole vehicle according to claim 1, wherein: and acquiring a pressure signal at a main valve of the hydrogen system as a hydrogen system pressure signal.
3. The hydrogen consumption determining method for a hydrogen fuel cell whole vehicle according to claim 1, wherein: the maximum value of all the measured temperatures of the hydrogen bottles is taken as the current temperature signal of the hydrogen system.
4. The hydrogen consumption determining method for a hydrogen fuel cell whole vehicle according to claim 1, wherein:
the hydrogenation conditions are as follows: setting a threshold value of hydrogen residual quantity, displaying an insufficient hydrogen residual quantity early warning by an instrument when the hydrogen residual quantity is lower than a first threshold value, carrying out hydrogenation, and automatically shutting down the fuel cell system when the hydrogen residual quantity is lower than a second threshold value; the first threshold is greater than the second threshold.
5. The hydrogen consumption determining method for a hydrogen fuel cell whole vehicle according to claim 1, wherein:
calculating the mass of the residual hydrogen in the hydrogen bottle according to the volume of the hydrogen, the pressure of the hydrogen, the temperature of the hydrogen and the gas compression factor; if the hydrogen is not filled in the middle, the hydrogen consumption is the sum of the hydrogen consumption of the fuel cell and the hydrogen consumption corresponding to the change of the SOC of the power cell, and if the hydrogen is filled in the middle, the hydrogen consumption is the sum of the hydrogen consumption of the fuel cell, the quality of the filled hydrogen and the hydrogen consumption corresponding to the change of the SOC of the power cell.
6. The hydrogen consumption determining method for a hydrogen fuel cell whole vehicle according to claim 1, wherein: the method for calculating the quality of the filled hydrogen comprises the following steps: judging whether hydrogenation is carried out according to the detected values of the pressure signal and the temperature signal of the hydrogen system, and calculating a single hydrogenation amount based on an ideal gas state equation according to the temperature change and the pressure change before and after hydrogenation, wherein the total hydrogenation amount is the sum of a plurality of hydrogenation amounts;
for single hydrogenation identification, setting a hydrogen change threshold A, and if the hydrogenation quality calculated by hydrogenation exceeds the threshold A, identifying that one-time successful hydrogenation is performed, and reading data; and determining that the hydrogenation is unsuccessful when the hydrogenation quality is smaller than the threshold value A.
7. A hydrogen fuel cell whole vehicle hydrogen consumption determination system, characterized by comprising:
and a monitoring module: configured to acquire a vehicle hydrogen system pressure signal, and a hydrogen system current temperature signal;
and a judging module: the hydrogenation control device is configured to control hydrogenation according to hydrogenation conditions, and determine the hydrogenation amount in the mileage to be measured through a pressure signal and a temperature signal;
and a conversion module: is configured to convert the power consumption of the power battery into corresponding hydrogen consumption according to the change of the state of charge of the power battery;
the calculation module: and the hydrogen consumption is calculated to obtain hundred kilometers according to the hydrogenation amount, the residual hydrogen amount and the conversion hydrogen consumption of the power battery in the mileage to be measured.
8. A hydrogen fuel cell whole vehicle hydrogen consumption determination system according to claim 7, wherein:
the monitoring module comprises a pressure monitoring module and a temperature monitoring module, wherein the pressure monitoring module acquires a pressure signal of the hydrogen system of the vehicle, and the temperature monitoring module acquires a current temperature signal of the hydrogen system.
9. An electronic device comprising a memory and a processor and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps of the method of any one of claims 1-6.
10. A computer readable storage medium storing computer instructions which, when executed by a processor, perform the steps of the method of any of claims 1-6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117194929A (en) * | 2023-11-06 | 2023-12-08 | 中汽研新能源汽车检验中心(天津)有限公司 | Fuel cell automobile hydrogenation behavior analysis method and system based on big data platform |
| CN118133482A (en) * | 2023-10-20 | 2024-06-04 | 佛山仙湖实验室 | Hydrogen bottle SOC estimation method, computer equipment and storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118133482A (en) * | 2023-10-20 | 2024-06-04 | 佛山仙湖实验室 | Hydrogen bottle SOC estimation method, computer equipment and storage medium |
| CN117194929A (en) * | 2023-11-06 | 2023-12-08 | 中汽研新能源汽车检验中心(天津)有限公司 | Fuel cell automobile hydrogenation behavior analysis method and system based on big data platform |
| CN117194929B (en) * | 2023-11-06 | 2024-01-30 | 中汽研新能源汽车检验中心(天津)有限公司 | Fuel cell automobile hydrogenation behavior analysis method and system based on big data platform |
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