Hydrogen discharge amount acquisition method and device, computer device, medium and product

Abstract

The application relates to a hydrogen emission amount acquisition method and device, computer equipment, a medium and a product. Current data and valve data of an electric pile are acquired, a first hydrogen amount actually participating in a reaction is calculated based on the current data, a second hydrogen amount injected into the electric pile is calculated based on the valve data, and the hydrogen emission amount is acquired according to the first hydrogen amount and the second hydrogen amount. The hydrogen amount injected into the electric pile and the air amount actually participating in the power generation can be accurately calculated, and the hydrogen emission amount can be accurately obtained.

Description

Technical Field

[0001] This application relates to the field of fuel cell technology, and in particular to a method, apparatus, computer equipment, medium, and product for obtaining hydrogen emissions. Background Technology

[0002] During fuel cell operation, water and nitrogen generated on the cathode side can permeate to the anode, causing a continuous decrease in the hydrogen concentration on the anode side, thus affecting the efficiency and performance of the fuel cell system. Therefore, fuel cell systems are often equipped with nitrogen venting valves and water draining valves to periodically remove nitrogen and water from the anode side. However, because the exact nitrogen concentration on the anode side cannot be known, the amount of oxygen discharged cannot be precisely controlled.

[0003] The traditional method involves installing a high-precision hydrogen concentration sensor and flow meter inside the fuel cell exhaust pipe to calculate the amount of hydrogen emitted.

[0004] However, this method can only be run on laboratory benchtops and is costly. Summary of the Invention

[0005] Therefore, it is necessary to provide a simple and efficient method, apparatus, computer equipment, medium, and product for calculating hydrogen emissions, addressing the aforementioned technical problems.

[0006] In a first aspect, this application provides a method for obtaining hydrogen emissions, the method comprising:

[0007] Acquire current data from the fuel cell stack and valve data;

[0008] The first amount of hydrogen actually participating in the reaction is calculated based on the current data, and the second amount of hydrogen injected into the fuel cell stack is calculated based on the valve data.

[0009] The hydrogen emission is obtained based on the first hydrogen quantity and the second hydrogen quantity.

[0010] In one embodiment, the above-mentioned calculation of the first amount of hydrogen gas actually participating in the reaction based on current data includes:

[0011] The hydrogen molar flow rate of the fuel cell stack was calculated based on the current data.

[0012] Calculate the hydrogen mass flow rate of the fuel cell stack based on the hydrogen molar flow rate;

[0013] The first hydrogen quantity is calculated based on the hydrogen mass flow rate of the fuel cell stack.

[0014] In one embodiment, the above-mentioned calculation of the hydrogen molar flow rate of the fuel cell stack based on current data includes:

[0015] Calculate the hydrogen molar flow rate of a single cell in the fuel cell stack based on the current data;

[0016] The hydrogen molar flow rate of the fuel cell stack is obtained from the amount of hydrogen produced by the single-cell reaction.

[0017] In one embodiment, the above-mentioned calculation of the second hydrogen quantity based on valve data includes:

[0018] Obtain the air pressure difference and valve opening from the valve data;

[0019] The second hydrogen quantity is calculated based on the pressure difference and valve opening.

[0020] In one embodiment, the calculation of the second hydrogen quantity based on the pressure difference and valve opening includes:

[0021] Linear interpolation is performed on the pressure difference and valve opening to obtain the mass flow calculation coefficient;

[0022] The second hydrogen quantity is obtained by calculating the coefficient based on the mass flow rate.

[0023] In one embodiment, obtaining the hydrogen emission amount based on the first hydrogen quantity and the second hydrogen quantity includes:

[0024] Subtracting the first hydrogen quantity from the second hydrogen quantity yields the hydrogen emission quantity.

[0025] Secondly, this application also provides a hydrogen emission acquisition device, which includes:

[0026] The data acquisition module is used to acquire current data of the fuel cell stack and valve data;

[0027] The hydrogen quantity acquisition module is used to calculate the first amount of hydrogen actually participating in the reaction based on current data, and to calculate the second amount of hydrogen injected into the fuel cell stack based on valve data.

[0028] The emission acquisition module is used to acquire hydrogen emissions based on the first hydrogen quantity and the second hydrogen quantity.

[0029] Thirdly, this application also provides a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method steps in any of the first aspects.

[0030] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method steps of any of the first aspects.

[0031] Fifthly, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the method steps of any of the first aspects.

[0032] The aforementioned method, apparatus, computer equipment, medium, and product for obtaining hydrogen emissions acquire current data and valve data from the fuel cell stack. Based on the current data, the first amount of hydrogen actually participating in the reaction is calculated, and based on the valve data, the second amount of hydrogen injected into the fuel cell stack is calculated. Based on the first and second amounts of hydrogen, the hydrogen emissions are obtained. This allows for accurate calculation of the amount of hydrogen injected into the fuel cell stack and the amount of air actually participating in the reaction for power generation, thereby accurately obtaining the hydrogen emissions. Attached Figure Description

[0033] Figure 1 This is a diagram illustrating the application environment of a hydrogen emission measurement method in one embodiment.

[0034] Figure 2 This is a flowchart illustrating a method for obtaining hydrogen emissions in one embodiment;

[0035] Figure 3 for Figure 2 The schematic diagram of the fuel cell hydrogen supply system in the embodiment shown is as follows;

[0036] Figure 4 for Figure 2 A flowchart illustrating step S202 in the illustrated embodiment;

[0037] Figure 5 for Figure 2 A schematic diagram of the mass flow characteristics of the hydrogen injection valve in the illustrated embodiment;

[0038] Figure 6 This is a flowchart illustrating the method for obtaining hydrogen emissions in another embodiment;

[0039] Figure 7 This is a structural block diagram of a hydrogen emission acquisition device in one embodiment;

[0040] Figure 8 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] The hydrogen emission measurement method provided in this application embodiment can be applied to, for example... Figure 1In the application environment shown, the control module 102 communicates with the measurement module 104 via a network. The measurement module 104 includes a current measurement unit and a gas flow measurement unit. The current measurement unit measures the current data of the fuel cell stack, and the gas flow measurement unit measures the hydrogen flow rate reacting within the fuel cell stack and the hydrogen flow rate injected into the fuel cell stack via the hydrogen injection valve. The control module 102 acquires the current data of the fuel cell stack and the valve data from the measurement module 104 via the network. Based on the current data, it calculates the first amount of hydrogen actually participating in the reaction, and based on the valve data, it calculates the second amount of hydrogen injected into the fuel cell stack, thereby obtaining the hydrogen emission amount based on the first and second hydrogen amounts. The control module 102 can be a fuel cell control unit (FCCU), and the measurement module 104 can be a measurement module in a fuel cell hydrogen supply system.

[0043] In one embodiment, such as Figure 2 As shown, a method for obtaining hydrogen emissions is provided, which can be applied to... Figure 1 Taking the control module 102 as an example, the following steps are included:

[0044] S201: Obtain current data and valve data of the fuel cell stack.

[0045] Among them, the current data refers to the real-time current of the fuel cell stack, used to calculate the real-time hydrogen consumption. The valve data refers to the flow rate data of the hydrogen injection valve, used to calculate the amount of hydrogen injected into the fuel cell stack through the hydrogen injection valve. The structure of the fuel cell hydrogen supply system is as follows: Figure 3 As shown, it includes a high-pressure hydrogen tank 1, a pressure reducing valve 2, a hydrogen injection valve 3, an ejector 4, a circulating pump water distributor 8, a water distributor 9, a nitrogen discharge valve 10, and a drain valve 11, etc. The fuel cell stack includes an anode 5, a membrane electrode 6, and a cathode 7.

[0046] The electrochemical equation for the anode side during fuel cell operation is as follows: The electrochemical equation on the cathode side is: In this process, the hydrogen ions generated at anode 5 will pass through the proton exchange membrane to cathode 7 in the form of hydrated hydrogen ions, and electrons will flow from the external circuit from anode 5 to cathode 7 to generate current.

[0047] Hydrogen injection valves generally come in two forms: proportional valves and injectors. Proportional valves remain open throughout stack operation, only varying in degree of opening. Hydrogen injectors, on the other hand, are controlled by a switching valve, using high-frequency switching to regulate the pressure of the hydrogen entering the stack.

[0048] S202: The first amount of hydrogen actually participating in the reaction is calculated based on the current data, and the second amount of hydrogen injected into the fuel cell stack is calculated based on the valve data.

[0049] The molar flow rate of hydrogen in the fuel cell stack can be obtained based on the current data output by the stack, and then the mass flow rate of the stack can be calculated. Based on the mass flow rate, the amount of hydrogen consumed in the reaction, i.e., the first hydrogen quantity, can be determined. Molar flow rate refers to the number of moles of substance flowing through a cross-section per unit time, while mass flow rate refers to the mass of fluid passing through the effective cross-section of a closed pipe or open tank per unit time. The actual amount of hydrogen injected into the fuel cell stack, i.e., the second hydrogen quantity, can be obtained based on valve data and the hydrogen injection characteristics of the hydrogen injection valve.

[0050] S203: Obtain the hydrogen emission amount based on the first hydrogen quantity and the second hydrogen quantity.

[0051] The difference between the actual amount of hydrogen injected into the fuel cell stack and the amount of hydrogen consumed in real-time reaction is the real-time hydrogen emission, and the actual utilization rate of hydrogen is calculated based on the emission.

[0052] In the above-mentioned method for obtaining hydrogen emissions, the current data and valve data of the fuel cell stack are obtained. The first amount of hydrogen actually participating in the reaction is calculated based on the current data, and the second amount of hydrogen injected into the fuel cell stack is calculated based on the valve data. The hydrogen emissions are obtained based on the first amount of hydrogen and the second amount of hydrogen. This method can accurately calculate the amount of hydrogen injected into the fuel cell stack and the amount of air actually participating in the reaction for power generation, thereby accurately obtaining the hydrogen emissions.

[0053] In one embodiment, such as Figure 4 As shown, the amount of hydrogen gas actually participating in the reaction, calculated based on the current data, includes:

[0054] S401: Calculate the hydrogen molar flow rate of the fuel cell stack based on the current data.

[0055] The formula for calculating the output current of the fuel cell stack is as follows:

[0056]

[0057] Where Q represents the charge of a single cell in the fuel cell stack; t represents time.

[0058] From the electrochemical equations for the anode and cathode sides of the fuel cell described above, it can be seen that all hydrogen molecules reacting release two electrons, flowing from the anode to the cathode through the external circuit. Therefore, every 1 mole (mol) of hydrogen outputs 2 mol of electrons to generate water. The formula for calculating the current can then be expressed as:

[0059]

[0060] Where e is the charge of one electron: 1.60 × 10⁻¹⁹ coulombs (C); m is the number of electrons per mol: 6.02 × 10²³; Q mol This represents the amount of hydrogen produced in a single-cell reaction.

[0061] therefore:

[0062]

[0063] Among them, Q sm This represents the molar flow rate of hydrogen in a single-cell reaction.

[0064] Then we have:

[0065]

[0066] The molar flow rate of hydrogen in the fuel cell stack can be expressed as:

[0067]

[0068] Where n is the number of individual cells in the fuel cell stack.

[0069] S402: Calculate the hydrogen mass flow rate of the fuel cell stack based on the hydrogen molar flow rate.

[0070] Among them, because:

[0071]

[0072] Among them, Q kg M represents the hydrogen mass flow rate during the reaction within the fuel cell stack. H2 The molar mass of hydrogen is expressed as: 2.016*10-3 kg / mol.

[0073] We can obtain:

[0074]

[0075] Therefore, the hydrogen mass flow rate of the fuel cell stack is:

[0076]

[0077] S403: The first hydrogen quantity is calculated based on the hydrogen mass flow rate of the fuel cell stack.

[0078] Among them, M H2 Substituting the values ​​of e and m into the hydrogen mass flow rate formula for the fuel cell stack, we obtain the first hydrogen quantity:

[0079]

[0080] In this embodiment, the hydrogen molar flow rate of the fuel cell stack is calculated based on the current data, and the hydrogen mass flow rate of the fuel cell stack is calculated based on the hydrogen molar flow rate. Thus, the first amount of hydrogen is calculated based on the hydrogen mass flow rate of the fuel cell stack, which can accurately calculate the mass flow rate of hydrogen actually participating in the reaction using the basic electrochemical principles of fuel cells.

[0081] In one embodiment, the above-mentioned calculation of the hydrogen molar flow rate of the fuel cell stack based on current data includes: calculating the hydrogen molar flow rate of a single cell in the fuel cell stack based on current data; and obtaining the hydrogen molar flow rate of the fuel cell stack based on the amount of hydrogen produced by the single cell reaction.

[0082] The hydrogen molar flow rate of a single cell is calculated from the current of the single cell, and the hydrogen molar flow rate of the stack is the sum of the hydrogen molar flow rates of the n single cells in the stack.

[0083] In this embodiment, the hydrogen molar flow rate of a single cell in the fuel cell stack is calculated based on the current data, and the hydrogen molar flow rate of the fuel cell stack is obtained based on the amount of hydrogen produced by the single cell reaction. This allows for accurate calculation of the hydrogen molar flow rate of the fuel cell stack, thereby ensuring the accuracy of the hydrogen mass flow rate.

[0084] In one embodiment, the above-mentioned calculation of the second hydrogen quantity based on valve data includes: obtaining the pressure difference and valve opening from the valve data; and calculating the second hydrogen quantity based on the pressure difference and valve opening.

[0085] Based on the physical characteristics of the hydrogen injection valve, the mass flow rate of hydrogen injected into the fuel cell stack can be calculated using the pressure difference between the inlet and outlet of the hydrogen injection valve and the valve opening degree. Specifically, the calculation formula is as follows:

[0086]

[0087] in, is the mass flow rate of hydrogen injected into the fuel cell stack by the injection valve; k is the calculation coefficient for the mass flow rate of hydrogen injected by the hydrogen injection valve. This represents the hydrogen pressure difference between the inlet and outlet of the hydrogen injection valve; when the hydrogen injection valve is a proportional valve... This indicates the opening degree of the proportional valve. When the hydrogen injection valve is an injector, This indicates the drive duty cycle of the injector.

[0088] In this embodiment, by obtaining the gas pressure difference and valve opening from the valve data, and calculating the second hydrogen quantity based on the gas pressure difference and valve opening, the actual amount of hydrogen injected into the fuel cell stack can be accurately calculated.

[0089] In one embodiment, the above-mentioned calculation of the second hydrogen quantity based on the pressure difference and valve opening includes: performing linear interpolation on the pressure difference and valve opening respectively to obtain the mass flow rate calculation coefficient; and obtaining the second hydrogen quantity based on the mass flow rate calculation coefficient.

[0090] Since the mass flow rate calculation coefficient k is not a constant, the second hydrogen quantity cannot be directly calculated using the formula. In practical applications, a linear interpolation lookup table method can be used to calculate the second hydrogen quantity. The linear interpolation method refers to using a straight line connecting two known quantities to determine the value of an unknown quantity between these two known quantities. Therefore, based on the hydrogen injection characteristics of the injector, linear interpolation is performed on the pressure difference and valve opening to obtain the mass flow rate calculation coefficient. For example... Figure 5 As shown, based on experimental experience data, the hydrogen injection characteristic chart of the injector was calibrated and obtained. When calculating the mass flow rate calculation coefficient, it can be directly obtained from the table based on the hydrogen injection characteristic chart.

[0091] In this embodiment, by performing linear interpolation on the gas pressure difference and valve opening, the mass flow rate calculation coefficient is obtained, and the second hydrogen quantity is obtained based on the mass flow rate calculation coefficient, thus accurately calculating the second hydrogen quantity.

[0092] In one embodiment, obtaining the hydrogen emission amount based on the first hydrogen quantity and the second hydrogen quantity includes: subtracting the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emission amount.

[0093] The formula for calculating the real-time hydrogen emissions from fuel cells is as follows:

[0094]

[0095] in, This refers to the real-time mass flow rate of hydrogen emitted from the fuel cell.

[0096] In this embodiment, the hydrogen emission amount is obtained by subtracting the first hydrogen emission amount from the second hydrogen emission amount. This allows for accurate calculation of the amount of hydrogen injected into the fuel cell stack and the amount of air actually used for power generation, thus enabling accurate determination of the hydrogen emission amount.

[0097] In one embodiment, such as Figure 6 As shown, a method for obtaining hydrogen emissions is provided, which includes the following steps:

[0098] S1: Acquire current data of the fuel cell stack and valve data.

[0099] S2: Calculate the hydrogen molar flow rate of the fuel cell stack based on the current data.

[0100] S3: Calculate the hydrogen molar flow rate of a single cell in the fuel cell stack based on the current data.

[0101] S4: The hydrogen molar flow rate of the fuel cell stack is obtained based on the amount of hydrogen produced by the single-cell reaction.

[0102] S5: The first hydrogen quantity is calculated based on the hydrogen mass flow rate of the fuel cell stack.

[0103] S6: Obtain the air pressure difference and valve opening from the valve data.

[0104] S7: Perform linear interpolation on the air pressure difference and valve opening to obtain the mass flow calculation coefficient.

[0105] S8: Calculate the second hydrogen quantity based on the mass flow rate coefficient.

[0106] S9: Subtract the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emission quantity.

[0107] In this embodiment, the hydrogen emissions of the fuel cell are calculated in real time based on the basic principles of fuel cell electrochemistry and the characteristics of the hydrogen injection valve, thereby improving the safety of the fuel cell.

[0108] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0109] Based on the same inventive concept, this application also provides a hydrogen emission acquisition device for implementing the hydrogen emission acquisition method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more hydrogen emission acquisition device embodiments provided below can be found in the limitations of the hydrogen emission acquisition method described above, and will not be repeated here.

[0110] In one embodiment, such as Figure 7 As shown, a hydrogen emission acquisition device is provided, comprising: a data acquisition module 710, a hydrogen quantity acquisition module 720, and an emission acquisition module 730, wherein:

[0111] The data acquisition module 710 is used to acquire current data of the fuel cell stack and valve data;

[0112] The hydrogen quantity acquisition module 720 is used to calculate the first amount of hydrogen actually participating in the reaction based on the current data, and to calculate the second amount of hydrogen injected into the fuel cell based on the valve data.

[0113] The emission acquisition module 730 is used to acquire hydrogen emission based on the first hydrogen quantity and the second hydrogen quantity.

[0114] In one embodiment, the hydrogen quantity acquisition module includes: a molar flow rate acquisition unit, a mass flow rate acquisition unit, and a hydrogen quantity acquisition unit, wherein:

[0115] The molar flow rate acquisition unit is used to calculate the hydrogen molar flow rate of the fuel cell stack based on the current data.

[0116] The mass flow rate acquisition unit is used to calculate the hydrogen mass flow rate of the fuel cell stack based on the hydrogen molar flow rate.

[0117] The hydrogen quantity acquisition unit is used to calculate the first hydrogen quantity based on the hydrogen mass flow rate of the fuel cell stack.

[0118] In one embodiment, the above-mentioned molar flow rate acquisition unit includes: a single-unit flow rate acquisition subunit and a stack flow rate acquisition subunit, wherein:

[0119] The single-cell flow acquisition subunit is used to calculate the hydrogen molar flow rate of a single cell in the stack based on current data.

[0120] The fuel cell flow rate acquisition subunit is used to obtain the hydrogen molar flow rate of the fuel cell based on the amount of hydrogen produced by the single-cell reaction.

[0121] In one embodiment, the hydrogen quantity acquisition module further includes: a pressure acquisition unit and a hydrogen quantity calculation unit, wherein:

[0122] The air pressure acquisition unit is used to obtain the air pressure difference and valve opening from the valve data;

[0123] The hydrogen quantity calculation unit is used to calculate the second hydrogen quantity based on the pressure difference and valve opening.

[0124] In one embodiment, the hydrogen quantity calculation unit includes: a coefficient calculation subunit and a hydrogen quantity acquisition subunit, wherein:

[0125] The coefficient calculation subunit is used to perform linear interpolation on the air pressure difference and valve opening to obtain the mass flow calculation coefficient.

[0126] The hydrogen quantity acquisition subunit is used to obtain the second hydrogen quantity based on the mass flow rate calculation coefficient.

[0127] In one embodiment, the emission acquisition module is further configured to subtract the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emission quantity.

[0128] Each module in the aforementioned hydrogen emission acquisition device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0129] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 8 As shown, the computer device includes a processor, memory, input / output interfaces, a communication interface, a display unit, and an input device. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a method for obtaining hydrogen emissions. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0130] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0131] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps: acquiring current data of the fuel cell stack and valve data; calculating a first amount of hydrogen actually participating in the reaction based on the current data, and calculating a second amount of hydrogen injected into the fuel cell stack based on the valve data; and obtaining hydrogen emission based on the first amount of hydrogen and the second amount of hydrogen.

[0132] In one embodiment, the calculation of the first amount of hydrogen actually participating in the reaction based on current data when the processor executes the computer program includes: calculating the hydrogen molar flow rate of the fuel cell based on the current data; calculating the hydrogen mass flow rate of the fuel cell based on the hydrogen molar flow rate; and calculating the first amount of hydrogen based on the hydrogen mass flow rate of the fuel cell.

[0133] In one embodiment, the calculation of the hydrogen molar flow rate of the fuel cell stack based on current data when the processor executes a computer program includes: calculating the hydrogen molar flow rate of a single cell in the fuel cell stack based on the current data; and obtaining the hydrogen molar flow rate of the fuel cell stack based on the amount of hydrogen produced by the single cell reaction.

[0134] In one embodiment, the calculation of a second hydrogen quantity based on valve data when the processor executes a computer program includes: obtaining a pressure difference and a valve opening from the valve data; and calculating the second hydrogen quantity based on the pressure difference and the valve opening.

[0135] In one embodiment, the calculation of the second hydrogen quantity based on the pressure difference and valve opening when the processor executes the computer program includes: performing linear interpolation on the pressure difference and valve opening respectively to obtain a mass flow rate calculation coefficient; and obtaining the second hydrogen quantity based on the mass flow rate calculation coefficient.

[0136] In one embodiment, the process of obtaining hydrogen emissions based on a first hydrogen quantity and a second hydrogen quantity when the processor executes a computer program includes: subtracting the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emissions.

[0137] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, performs the following steps: acquiring current data of the fuel cell stack and valve data; calculating a first amount of hydrogen actually participating in the reaction based on the current data, and calculating a second amount of hydrogen injected into the fuel cell stack based on the valve data; and obtaining hydrogen emission based on the first amount of hydrogen and the second amount of hydrogen.

[0138] In one embodiment, the calculation of the first amount of hydrogen actually participating in the reaction based on current data when the computer program is executed by the processor includes: calculating the hydrogen molar flow rate of the fuel cell based on the current data; calculating the hydrogen mass flow rate of the fuel cell based on the hydrogen molar flow rate; and calculating the first amount of hydrogen based on the hydrogen mass flow rate of the fuel cell.

[0139] In one embodiment, the calculation of the hydrogen molar flow rate of the fuel cell stack based on current data when the computer program is executed by the processor includes: calculating the hydrogen molar flow rate of a single cell in the fuel cell stack based on the current data; and obtaining the hydrogen molar flow rate of the fuel cell stack based on the amount of hydrogen produced by the single cell reaction.

[0140] In one embodiment, the calculation of a second hydrogen quantity based on valve data when the computer program is executed by a processor includes: obtaining a pressure difference and a valve opening from the valve data; and calculating the second hydrogen quantity based on the pressure difference and the valve opening.

[0141] In one embodiment, the calculation of the second hydrogen quantity based on the pressure difference and valve opening when the computer program is executed by the processor includes: performing linear interpolation on the pressure difference and valve opening respectively to obtain a mass flow rate calculation coefficient; and obtaining the second hydrogen quantity based on the mass flow rate calculation coefficient.

[0142] In one embodiment, when a computer program is executed by a processor, obtaining a hydrogen emission amount based on a first hydrogen quantity and a second hydrogen quantity includes: subtracting the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emission amount.

[0143] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps: acquiring current data of the fuel cell stack and valve data; calculating a first amount of hydrogen actually participating in the reaction based on the current data, and calculating a second amount of hydrogen injected into the fuel cell stack based on the valve data; and obtaining hydrogen emission based on the first amount of hydrogen and the second amount of hydrogen.

[0144] In one embodiment, the calculation of the first amount of hydrogen actually participating in the reaction based on current data when the computer program is executed by the processor includes: calculating the hydrogen molar flow rate of the fuel cell based on the current data; calculating the hydrogen mass flow rate of the fuel cell based on the hydrogen molar flow rate; and calculating the first amount of hydrogen based on the hydrogen mass flow rate of the fuel cell.

[0145] In one embodiment, the calculation of the hydrogen molar flow rate of the fuel cell stack based on current data when the computer program is executed by the processor includes: calculating the hydrogen molar flow rate of a single cell in the fuel cell stack based on the current data; and obtaining the hydrogen molar flow rate of the fuel cell stack based on the amount of hydrogen produced by the single cell reaction.

[0146] In one embodiment, the calculation of a second hydrogen quantity based on valve data when the computer program is executed by a processor includes: obtaining a pressure difference and a valve opening from the valve data; and calculating the second hydrogen quantity based on the pressure difference and the valve opening.

[0147] In one embodiment, the calculation of the second hydrogen quantity based on the pressure difference and valve opening when the computer program is executed by the processor includes: performing linear interpolation on the pressure difference and valve opening respectively to obtain a mass flow rate calculation coefficient; and obtaining the second hydrogen quantity based on the mass flow rate calculation coefficient.

[0148] In one embodiment, when a computer program is executed by a processor, obtaining a hydrogen emission amount based on a first hydrogen quantity and a second hydrogen quantity includes: subtracting the first hydrogen quantity from the second hydrogen quantity to obtain the hydrogen emission amount.

[0149] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0150] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0151] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for obtaining hydrogen emissions, characterized in that, The method includes: Acquire current data from the fuel cell stack and valve data; The first amount of hydrogen actually participating in the reaction is calculated based on the current data, and the second amount of hydrogen injected into the fuel cell stack is calculated based on the valve data. The hydrogen emission amount is obtained based on the first hydrogen quantity and the second hydrogen quantity; The calculation of the second hydrogen gas injection quantity into the fuel cell stack based on the valve data includes: Obtain the air pressure difference and valve opening from the valve data; Linear interpolation is performed on the pressure difference and the valve opening to obtain the mass flow rate calculation coefficient. The second hydrogen quantity is obtained based on the mass flow rate calculation coefficient. Wherein, the second hydrogen quantity is the hydrogen mass flow rate injected into the fuel cell stack; the hydrogen mass flow rate injected into the fuel cell stack is calculated by the pressure difference between the inlet and outlet of the hydrogen injection valve and the valve opening degree of the hydrogen injection valve, and the calculation formula is: in, is the mass flow rate of hydrogen injected into the fuel cell stack; k is the mass flow rate calculation coefficient; This represents the pressure difference between the inlet and outlet of the hydrogen injection valve; when the hydrogen injection valve is a proportional valve, This indicates the opening degree of the proportional valve; when the hydrogen injection valve is an injector, This indicates the drive duty cycle of the injector.

2. The method according to claim 1, characterized in that, The calculation of the actual amount of hydrogen participating in the reaction based on the current data includes: The hydrogen molar flow rate of the fuel cell stack is calculated based on the current data. Calculate the hydrogen mass flow rate of the fuel cell stack based on the hydrogen molar flow rate; The first hydrogen quantity is calculated based on the hydrogen mass flow rate of the fuel cell stack.

3. The method according to claim 2, characterized in that, The step of calculating the hydrogen molar flow rate of the fuel cell stack based on the current data includes: The hydrogen molar flow rate of a single cell in the fuel cell stack is calculated based on the current data. The hydrogen molar flow rate of the fuel cell stack is obtained based on the amount of hydrogen produced by the single-cell reaction.

4. The method according to claim 1, characterized in that, The step of obtaining the hydrogen emission amount based on the first hydrogen quantity and the second hydrogen quantity includes: Subtracting the first hydrogen amount from the second hydrogen amount yields the hydrogen emission amount.

5. A hydrogen emission measurement device, characterized in that, The device includes: The data acquisition module is used to acquire current data of the fuel cell stack and valve data; The hydrogen quantity acquisition module is used to calculate the first amount of hydrogen actually participating in the reaction based on the current data, and to calculate the second amount of hydrogen injected into the fuel cell based on the valve data. The emission acquisition module is used to acquire the hydrogen emission amount based on the first hydrogen amount and the second hydrogen amount; wherein, the calculation of the second hydrogen amount injected into the fuel cell stack based on the valve data includes: Obtain the air pressure difference and valve opening from the valve data; Linear interpolation is performed on the pressure difference and the valve opening to obtain the mass flow rate calculation coefficient. The second hydrogen quantity is obtained based on the mass flow rate calculation coefficient. Wherein, the second hydrogen quantity is the hydrogen mass flow rate injected into the fuel cell stack; the hydrogen mass flow rate injected into the fuel cell stack is calculated by the pressure difference between the inlet and outlet of the hydrogen injection valve and the valve opening degree of the hydrogen injection valve, and the calculation formula is: in, is the mass flow rate of hydrogen injected into the fuel cell stack; k is the mass flow rate calculation coefficient; This represents the pressure difference between the inlet and outlet of the hydrogen injection valve; when the hydrogen injection valve is a proportional valve, This indicates the opening degree of the proportional valve; when the hydrogen injection valve is an injector, This indicates the drive duty cycle of the injector.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4.

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