Method and apparatus for determining hydrogen consumption, and electronic device

Abstract

The application discloses a hydrogen consumption determination method and device and electronic equipment. The method comprises the following steps: determining a first consumption amount of first hydrogen in a predetermined time period, and a second consumption amount corresponding to a plurality of time intervals in the predetermined time period, wherein the first hydrogen is hydrogen stored in a hydrogen storage system, and the second hydrogen is hydrogen converted into electric energy consumption; determining a total loss amount of hydrogen in the predetermined time period according to the first consumption amount and the plurality of second consumption amounts; determining a hydrogen correction amount corresponding to the plurality of time intervals according to the total loss amount; and determining hydrogen consumptions corresponding to the plurality of time intervals according to the second consumption amounts corresponding to the plurality of time intervals and the hydrogen correction amounts corresponding to the plurality of time intervals. The application solves the technical problem that the determined hydrogen consumption is inaccurate in the related art.

Description

Technical Field

[0001] This invention relates to the field of fuel cells, and more specifically, to a method, apparatus, and electronic device for determining hydrogen consumption. Background Technology

[0002] The calculation and display of hydrogen consumption in hydrogen fuel cell electric vehicles allows drivers to be aware of the operating status of the fuel cell system at all times. Currently, the testing methods for hydrogen consumption have technical problems that result in inaccurate hydrogen consumption measurements.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method, apparatus, and electronic device for determining hydrogen consumption, to at least solve the technical problem in the related art where the determined hydrogen consumption is inaccurate.

[0005] According to one aspect of the present invention, a method for determining hydrogen consumption is provided, comprising: determining a first consumption amount of a first hydrogen gas within a predetermined time period, and a second consumption amount of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period, wherein the first hydrogen gas is hydrogen gas stored in a hydrogen storage system, and the second hydrogen gas is hydrogen gas consumed by being converted into electrical energy; determining a total hydrogen loss amount within the predetermined time period based on the first consumption amount and the plurality of second consumption amounts; determining a hydrogen correction amount corresponding to the plurality of time intervals based on the total loss amount; and determining a hydrogen consumption amount corresponding to the plurality of time intervals based on the second consumption amounts corresponding to the plurality of time intervals and the corresponding hydrogen correction amounts.

[0006] Optionally, determining the first consumption of hydrogen within a predetermined time period includes: acquiring first hydrogen parameters related to hydrogen, and the hydrogen volume in the hydrogen storage system; acquiring the initial hydrogen pressure and initial hydrogen temperature at the start time of the predetermined time period, and acquiring the cutoff hydrogen pressure and cutoff hydrogen temperature at the end time of the predetermined time period; and determining the first consumption based on the first hydrogen parameters, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cutoff hydrogen pressure, and the cutoff hydrogen temperature.

[0007] Optionally, determining the first consumption amount based on the first hydrogen parameters, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cutoff hydrogen pressure, and the cutoff hydrogen temperature includes: determining, when the first hydrogen parameters include the molar mass of hydrogen and a universal gas constant, the initial ratio of the initial hydrogen pressure to the initial hydrogen temperature and the cutoff ratio of the cutoff hydrogen pressure to the cutoff hydrogen temperature; determining the difference between the initial ratio and the cutoff ratio; determining the first product of the hydrogen volume and the molar mass, and the ratio of the first product to the universal gas constant; and determining the product of the difference and the ratio as the first consumption amount.

[0008] Optionally, determining the second consumption amount corresponding to each of the multiple time intervals within the predetermined time period includes: acquiring second hydrogen parameters related to hydrogen and the total number of battery cells in the fuel cell system; acquiring battery current values ​​corresponding to each of the multiple time intervals; and determining the second consumption amount corresponding to each of the multiple time intervals based on the second hydrogen parameters, the total number of battery cells, and the battery current values ​​corresponding to each of the multiple time intervals.

[0009] Optionally, determining the second consumption corresponding to each of the multiple time intervals based on the second hydrogen parameters, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals includes: when the second hydrogen parameters include the molar mass of hydrogen and the Faraday constant, determining the second product of the Faraday constant, the molar mass, the total number of battery cells, and a predetermined coefficient; determining the product of the second product and the battery current values ​​corresponding to the multiple time intervals to obtain the second consumption corresponding to the multiple time intervals.

[0010] Optionally, before determining the second consumption amount of the second hydrogen gas corresponding to the multiple time intervals within the predetermined time period, the method further includes: determining an instantaneous time interval; dividing the predetermined time period according to the instantaneous time interval to obtain the multiple time intervals.

[0011] Optionally, determining the total hydrogen consumption within the predetermined time period based on the first consumption and a plurality of second consumption includes: determining the sum of the consumption of the plurality of second consumption; and determining the difference between the first consumption and the sum of consumption as the total consumption.

[0012] Optionally, determining the hydrogen correction amount corresponding to each of the plurality of time intervals based on the total loss includes: determining the number of intervals among the plurality of time intervals; and determining the ratio of the total loss to the number of intervals as the hydrogen correction amount corresponding to each of the plurality of time intervals.

[0013] Optionally, determining the hydrogen consumption corresponding to each of the plurality of time intervals based on the second consumption amount and the corresponding hydrogen correction amount for each of the plurality of time intervals includes: when all of the plurality of time intervals are less than a predetermined interval, determining the instantaneous hydrogen consumption corresponding to each of the plurality of time intervals based on the second consumption amount and the corresponding hydrogen correction amount for each of the plurality of time intervals.

[0014] Optionally, after determining the hydrogen consumption corresponding to each of the plurality of time intervals based on the second consumption amount and hydrogen correction amount corresponding to each of the plurality of time intervals, the method further includes: upon receiving a request to obtain the hydrogen consumption per unit of fuel cell vehicle driving, in response to the request, determining the hydrogen consumption per unit of fuel cell vehicle driving corresponding to each of the plurality of time intervals based on the vehicle speed and the hydrogen consumption corresponding to each of the plurality of time intervals, wherein the request to obtain the hydrogen consumption per unit of fuel cell vehicle driving carries the vehicle speed.

[0015] According to one aspect of the present invention, a hydrogen consumption determination apparatus is provided, comprising: a first determination module, configured to determine a first consumption amount of a first hydrogen gas within a predetermined time period, and a second consumption amount of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period, wherein the first hydrogen gas is hydrogen gas stored in the hydrogen storage system, and the second hydrogen gas is hydrogen gas consumed by being converted into electrical energy; a second determination module, configured to determine a total hydrogen loss amount within the predetermined time period based on the first consumption amount and the plurality of second consumption amounts; a third determination module, configured to determine a hydrogen correction amount corresponding to the plurality of time intervals based on the total loss amount; and a fourth determination module, configured to determine a hydrogen consumption amount corresponding to the plurality of time intervals based on the second consumption amounts corresponding to the plurality of time intervals and the corresponding hydrogen correction amounts.

[0016] According to one aspect of the present invention, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the hydrogen consumption determination method described in any of the preceding claims.

[0017] According to one aspect of the present invention, a computer-readable storage medium is provided, wherein when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the hydrogen consumption determination method described in any of the preceding claims.

[0018] In this embodiment of the invention, a first consumption amount of first hydrogen gas within a predetermined time period and a second consumption amount of second hydrogen gas corresponding to multiple time intervals within the predetermined time period are determined. The first hydrogen gas is hydrogen stored in a hydrogen storage system, and the second hydrogen gas is hydrogen gas consumed by being converted into electrical energy. Based on the first consumption amount and the multiple second consumption amounts, the total hydrogen loss within the predetermined time period is determined. Based on the total loss amount, hydrogen correction amounts corresponding to the multiple time intervals are determined. Based on the second consumption amounts and corresponding hydrogen correction amounts for the multiple time intervals, the hydrogen consumption corresponding to the multiple time intervals is determined. In the above steps, since the first consumption amount is the total hydrogen consumption and the multiple second consumption amounts are the hydrogen consumption for converting into electrical energy, the amount of hydrogen lost can be determined by the first consumption amount and the multiple consumption amounts, and then the hydrogen correction amount can be determined. Then, based on the second consumption amounts and the corresponding hydrogen correction amounts for multiple time intervals, the hydrogen consumption corresponding to each of the multiple time intervals can be determined. Since the lost hydrogen is also taken into account, the determined hydrogen consumption will be more accurate, thus solving the technical problem in related technologies where the determined hydrogen consumption is inaccurate. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a flowchart of a method for determining hydrogen consumption according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure of the anode side in a fuel cell system provided by an optional embodiment of the present invention;

[0022] Figure 3 This is a structural block diagram of a hydrogen consumption determination device according to an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Example 1

[0026] According to an embodiment of the present invention, an embodiment of a method for determining hydrogen consumption is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0027] Figure 1 This is a flowchart of a method for determining hydrogen consumption according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes the following steps:

[0028] Step S102: Determine the first consumption amount of the first hydrogen gas within a predetermined time period, and the second consumption amount of the second hydrogen gas corresponding to multiple time intervals within the predetermined time period, wherein the first hydrogen gas is the hydrogen gas stored in the hydrogen storage system, and the second hydrogen gas is the hydrogen gas that is converted into electrical energy and consumed.

[0029] In step S102 of this application, the solution provided by this application can be applied to fuel cell scenarios. This step obtains the first consumption of first hydrogen within a predetermined time period, and the second consumption of second hydrogen corresponding to multiple time intervals within the predetermined time period. The predetermined time period and multiple time intervals can be customized according to the actual application and scenario. For example, the predetermined time period can be set to 1 hour, such as 13:00-14:00, and the application scenario can be set to calculate instantaneous hydrogen consumption (e.g., one second is called instantaneous). Considering that the scenario is for calculating instantaneous hydrogen consumption, the multiple time intervals can be time intervals in units of 1 second. Determining the first consumption of first hydrogen within the predetermined time period is equivalent to determining the consumption of hydrogen already stored in the hydrogen storage system within 1 hour. Determining the second consumption of second hydrogen corresponding to multiple time intervals within the predetermined time period is equivalent to determining the hydrogen consumption per second within this 1-hour period from 13:00 to 14:00. It should be noted that the hydrogen consumption here refers to the hydrogen consumption converted into electrical energy.

[0030] Step S104: Determine the total hydrogen consumption within a predetermined time period based on the first consumption and multiple second consumption amounts.

[0031] In step S104 of this application, the total hydrogen loss within a predetermined time period is determined based on the first consumption amount and multiple second consumption amounts. Since hydrogen should ideally be converted into electrical energy, in practical applications, some hydrogen may be lost, such as through discharge valves, direct permeation into the cathode, or leaks in pipelines, hydrogen pumps, or the fuel cell stack. Therefore, by using the first consumption amount and multiple second consumption amounts, the amount of hydrogen lost within the predetermined time period can be determined for subsequent correction.

[0032] Step S106: Based on the total loss, determine the hydrogen correction amount corresponding to each of the multiple time intervals.

[0033] In step S106 provided in this application, based on the total loss, the amount of hydrogen required for each of the multiple time intervals to divide the loss is determined for subsequent correction.

[0034] Step S108: Determine the hydrogen consumption corresponding to the multiple time intervals based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the multiple time intervals.

[0035] In step S108 provided in this application, the second consumption amount is corrected using the corresponding hydrogen correction amount based on the second consumption amount corresponding to multiple time intervals and the corresponding hydrogen correction amount, so as to determine the hydrogen consumption corresponding to the multiple time intervals based on the determined data.

[0036] Through steps S102-S108 above, the first consumption amount of the first hydrogen gas within a predetermined time period and the second consumption amount of the second hydrogen gas corresponding to multiple time intervals within the predetermined time period are determined, wherein the first hydrogen gas is the hydrogen gas stored in the hydrogen storage system, and the second hydrogen gas is the hydrogen gas consumed by being converted into electrical energy. Based on the first consumption amount and the multiple second consumption amounts, the total hydrogen loss within the predetermined time period is determined. Based on the total loss amount, the hydrogen correction amount corresponding to each of the multiple time intervals is determined. Based on the second consumption amount and the corresponding hydrogen correction amount for each of the multiple time intervals, the hydrogen consumption corresponding to each of the multiple time intervals is determined. In the above steps, since the first consumption amount is the total hydrogen consumption and the multiple second consumption amounts are the hydrogen consumption for converting into electrical energy, the amount of hydrogen lost can be determined by the first consumption amount and the multiple consumption amounts, and then the hydrogen correction amount can be determined. Then, based on the second consumption amounts and the corresponding hydrogen correction amounts for multiple time intervals, the hydrogen consumption corresponding to each of the multiple time intervals can be determined. Since the lost hydrogen is also taken into account, the determined hydrogen consumption will be more accurate, thus solving the technical problem in related technologies where the determined hydrogen consumption is inaccurate.

[0037] As an optional embodiment, determining the first consumption of a first hydrogen gas within a predetermined time period includes: acquiring first hydrogen gas parameters related to hydrogen gas, and the hydrogen gas volume in the hydrogen storage system; acquiring the initial hydrogen gas pressure and initial hydrogen gas temperature corresponding to the start time of the predetermined time period, and acquiring the cutoff hydrogen gas pressure and cutoff hydrogen gas temperature corresponding to the end time of the predetermined time period; and determining the first consumption based on the first hydrogen gas parameters, hydrogen gas volume, initial hydrogen gas pressure, initial hydrogen gas temperature, cutoff hydrogen gas pressure, and cutoff hydrogen gas temperature.

[0038] This embodiment describes a method for determining the first consumption amount of hydrogen. In a fuel cell, the amount of hydrogen consumed at a certain moment when hydrogen on the anode side is directly converted into electrical energy can be estimated. Therefore, the hydrogen consumption at the start and end times of a predetermined time period can be determined, thereby determining the first consumption amount. The amount of hydrogen consumed at a certain moment when hydrogen on the anode side is directly converted into electrical energy can be determined using the data described above. This achieves the effect of accurately determining the first hydrogen consumption amount at a certain moment, and thus achieving the effect of accurately determining the first consumption amount.

[0039] As an optional embodiment, determining the first consumption amount based on the first hydrogen parameters, hydrogen volume, initial hydrogen pressure, initial hydrogen temperature, cutoff hydrogen pressure, and cutoff hydrogen temperature includes: determining the initial ratio of the initial hydrogen pressure to the initial hydrogen temperature, and the cutoff ratio of the cutoff hydrogen pressure to the cutoff hydrogen temperature, given that the first hydrogen parameters include the molar mass of hydrogen and the universal gas constant; determining the difference between the initial ratio and the cutoff ratio; determining the first product of hydrogen volume and molar mass, and the ratio of the first product to the universal gas constant; and determining the product of the difference and the ratio as the first consumption amount.

[0040] This embodiment describes the specific steps for determining the first consumption amount based on first hydrogen parameters, hydrogen volume, initial hydrogen pressure, initial hydrogen temperature, cutoff hydrogen pressure, and cutoff hydrogen temperature. The change in the amount of hydrogen in the hydrogen storage system is mainly reflected in the changes in hydrogen pressure and temperature within the storage tank. Therefore, the first consumption amount can be determined using these two related data points. In this step, the initial ratio of the initial hydrogen pressure to the initial hydrogen temperature, and the cutoff ratio of the cutoff hydrogen pressure to the cutoff hydrogen temperature are determined; the difference between the initial and cutoff ratios is determined; the first product of hydrogen volume and molar mass is determined, and the ratio of this first product to the universal gas constant is determined. The product of the difference and the ratio is then used to determine the first consumption amount, achieving the effect of accurately determining the first consumption amount.

[0041] In the above steps, the relationship between pressure and hydrogen volume is determined according to the Clapeyron equation: PV = (m / M)RT. Where P is the gas pressure, in Pascals (Pa). V is the gas volume. m is the gas mass. M is the molar mass of the gas, and (m / M) represents the number of moles. R is the universal gas constant, R = 8.31 J / mol. T is the gas temperature, in Kelvin. The molar mass of hydrogen is 2.02 g / mol.

[0042] As can be seen, given a fixed temperature and pressure, the mass of the first hydrogen gas can be obtained using the following formula:

[0043]

[0044] The change in hydrogen mass in the hydrogen storage system before and after a certain period of time (e.g., one hour) can be calculated as follows:

[0045]

[0046] This allows for the accurate determination of the initial consumption amount.

[0047] As an optional embodiment, determining the second consumption amount corresponding to multiple time intervals within a predetermined time period includes: acquiring second hydrogen parameters related to hydrogen and the total number of cells in the fuel cell system; acquiring cell current values ​​corresponding to the multiple time intervals; and determining the second consumption amount corresponding to the multiple time intervals based on the second hydrogen parameters, the total number of cells, and the cell current values ​​corresponding to the multiple time intervals.

[0048] This embodiment describes a method for determining the second consumption amount. Since the amount of hydrogen consumed in real-time and directly converted into electrical energy during fuel cell system operation can be calculated based on the magnitude of the current, the consumption amount corresponding to each time interval can also be calculated in this way. Specifically, second hydrogen parameters related to hydrogen and the total number of cell modules in the fuel cell system are obtained; cell current values ​​corresponding to multiple time intervals are obtained; and based on the second hydrogen parameters, the total number of cell modules, and the cell current values ​​corresponding to multiple time intervals, the second consumption amount corresponding to each of the multiple time intervals is determined.

[0049] As an optional embodiment, based on the second hydrogen parameters, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals, the second consumption corresponding to the multiple time intervals is determined, including: when the second hydrogen parameters include the molar mass of hydrogen and the Faraday constant, determining the second product of the Faraday constant, the molar mass, the total number of battery cells, and a predetermined coefficient; determining the product of the second product with the battery current values ​​corresponding to the multiple time intervals, to obtain the second consumption corresponding to the multiple time intervals.

[0050] This embodiment describes a specific method for determining the second consumption amount. This is achieved by determining a second product of the Faraday constant, molar mass, total number of battery cells, and a predetermined coefficient. The second product is then multiplied by the battery current values ​​corresponding to multiple time intervals to determine the second consumption amount for each of the multiple time intervals.

[0051] For example: Since the calculation is for instantaneous hydrogen consumption at 1-second intervals, let's take a predetermined time interval of one second as an example to calculate the hydrogen consumption during this time period. The calculation formula is as follows:

[0052] The mass of hydrogen gas consumed in one second = I * N * M / (2 * F)

[0053] Where M is the molar mass of hydrogen (2.02 g / mol), F is the Faraday constant (C / mol), and I is the current (ampere). 1 ampere = 1 coulomb / second. A coulomb is the unit of charge (C), and one coulomb represents the charge of 6.25 × 10¹⁸ electrons. One mole corresponds to 6.022 × 10²³. Each cell in the fuel cell stack generates the same current, so the total charge is I*N, in coulombs (C), where N is the total number of cells in the stack. I*N / F is the total number of moles of electrons in one second. Since each hydrogen molecule contains two electrons, I*N / (2*F) can be used to represent the total number of hydrogen molecules in one second. Multiplying the total number of moles by the molar mass of hydrogen gives the mass of hydrogen consumed in one second, m. 1s (Unit: g / s)

[0054] As can be seen, the above method can accurately determine the amount of secondary consumption.

[0055] As an optional embodiment, before determining the second consumption amount corresponding to the multiple time intervals within a predetermined time period, the method further includes: determining the instantaneous time interval; dividing the predetermined time period according to the instantaneous time interval to obtain multiple time intervals.

[0056] In this embodiment, a method for determining multiple time intervals is described.

[0057] Assuming that this application involves a fixed instantaneous hydrogen consumption, the time interval can be set very small when determining the time interval, which makes it easier to determine the instantaneous hydrogen consumption more accurately.

[0058] It should be noted that a fuel cell system can include a hydrogen storage system, or both. The fuel cell stack is part of the fuel cell system, not the hydrogen storage system. In the context of electric vehicles, when the fuel cell system and the hydrogen storage system are located side-by-side, both are situated within the electric vehicle.

[0059] As an optional embodiment, determining the total hydrogen consumption within a predetermined time period based on the first consumption and a plurality of second consumption includes: determining the sum of the consumption of the plurality of second consumption; and determining the difference between the first consumption and the sum of consumption as the total consumption.

[0060] This embodiment describes the steps for determining the total loss. Here, the sum of multiple second consumption amounts can be determined first, such as the hydrogen consumption in the first second being m. 1s Similarly, by calculating the hydrogen consumption every second thereafter, we can obtain the total hydrogen consumption for one hour (as mentioned above, the sum of multiple secondary consumption amounts), i.e., m. 1h =m 1s +m 2s +m3s +···+m 3600s Then, based on the first consumption and multiple second consumption amounts, the total hydrogen loss within the predetermined time period is determined. Specifically, it can be calculated using the following formula: Δm = m 1H -m 1h This method ensures that the total loss can be accurately determined.

[0061] As an optional embodiment, the hydrogen correction amount corresponding to each of the multiple time intervals is determined based on the total loss, including: determining the number of intervals of the multiple time intervals; and determining the ratio of the total loss to the number of intervals as the hydrogen correction amount corresponding to each of the multiple time intervals.

[0062] This embodiment describes a method for determining the hydrogen correction amount corresponding to multiple time intervals. Specifically, the number of time intervals can be determined first, and then the ratio of the total loss to the number of intervals can be used as the hydrogen correction amount for each time interval. For example, assuming the number of time intervals is 3600 and the total loss is Δm, the correction amount can be represented by Δm / 3600. This method allows for the accurate determination of the hydrogen correction amount corresponding to each of the multiple time intervals.

[0063] As an optional embodiment, determining the hydrogen consumption corresponding to the multiple time intervals based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the multiple time intervals includes: when the multiple time intervals are all less than a predetermined interval, determining the instantaneous hydrogen consumption corresponding to the multiple time intervals based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the multiple time intervals.

[0064] This application describes the case where multiple time intervals are all shorter than a predetermined interval. The predetermined interval can be a sufficiently small time interval, such as multiple time intervals being less than 1 second. It should be noted that when the time intervals are divided into sufficiently short intervals, it can be understood as determining the instantaneous hydrogen consumption, such as 1 second or even shorter. Assuming that the calculation is for instantaneous hydrogen consumption, taking a predetermined time interval of one second as an example, calculating these multiple time intervals can also be understood as calculating the instantaneous hydrogen consumption corresponding to the instantaneous time intervals.

[0065] If the second consumption amount corresponding to multiple time intervals is m 1s The hydrogen correction amount corresponding to multiple time intervals is characterized by Δm / 3600. Then, in subsequent instantaneous hydrogen consumption, it can be represented by m... 1s By combining the correction value Δm / 3600, the actual instantaneous hydrogen consumption can be obtained. This method allows for a more accurate determination of instantaneous hydrogen consumption.

[0066] As an optional embodiment, after determining the hydrogen consumption corresponding to the multiple time intervals based on the second consumption amount and hydrogen correction amount corresponding to the multiple time intervals, the method further includes: upon receiving a request to obtain the hydrogen consumption per unit of fuel cell vehicle driving, in response to the request, determining the hydrogen consumption per unit of fuel cell vehicle driving corresponding to the multiple time intervals based on the vehicle speed and the hydrogen consumption corresponding to the multiple time intervals, wherein the request to obtain the hydrogen consumption per unit of fuel cell vehicle driving carries the vehicle speed.

[0067] This embodiment describes the steps of applying the method to a scenario of determining the hydrogen consumption per unit of fuel cell vehicle driving. In this scenario, a request for hydrogen consumption per unit of fuel cell vehicle driving can be received and responded to in order to determine the hydrogen consumption per unit of fuel cell vehicle driving based on the hydrogen consumption already determined for multiple time intervals. Here, the hydrogen consumption per unit of fuel cell vehicle driving is the hydrogen consumption data expressed in kg / 100km.

[0068] The conversion method involves determining the hydrogen consumption per unit of fuel cell vehicle travel based on vehicle speed and hydrogen consumption corresponding to multiple time intervals.

[0069] For example:

[0070] Combining the vehicle speed v (unit: km / h) and hydrogen consumption m i (Unit: g / s) can be used to obtain the hydrogen consumption per unit of fuel cell vehicle driving (unit: kg / 100km):

[0071]

[0072] As can be seen, the above method can achieve the goal of determining the hydrogen consumption per unit of fuel cell vehicle operation.

[0073] Based on the above embodiments and optional embodiments, an optional implementation method is provided, which is described in detail below.

[0074] An optional embodiment of the present invention provides a method for determining hydrogen consumption. Figure 2 This is a schematic diagram of the main structure of the anode side in the fuel cell system provided by an optional embodiment of the present invention. The following is in conjunction with... Figure 2 A detailed introduction is provided.

[0075] Common anode side main structures such as Figure 2As shown. During fuel cell stack operation, hydrogen on the anode side undergoes an electrochemical reaction, continuously generating electrical energy. Most of the hydrogen that cannot react in time circulates continuously within the anode side. Therefore, during stack operation, hydrogen is directly consumed and converted into electrical energy, but it also suffers several losses (failing to directly generate electrical energy): it is discharged through the hydrogen venting valve, directly permeates into the cathode, or leaks in pipelines, hydrogen pumps, and the stack itself. Based on this, the optional implementation of this invention constructs a general approach: first, it estimates the amount of hydrogen consumed at the anode side by directly converting it into electrical energy; then, it corrects (compensates for) the hydrogen consumption value based on changes in the hydrogen quantity in the hydrogen storage system; during the operation of the fuel cell electric vehicle, this correction can be performed periodically to obtain more accurate hydrogen consumption estimation data. The detailed steps are described below:

[0076] S1, determine the first consumption of the first hydrogen gas within a predetermined time period, wherein the first hydrogen gas is the hydrogen gas stored in the hydrogen storage system;

[0077] Obtain the first hydrogen parameters related to hydrogen, as well as the hydrogen volume in the hydrogen storage system;

[0078] Obtain the initial hydrogen pressure and initial hydrogen temperature at the start time of the predetermined time period, and obtain the cut-off hydrogen pressure and cut-off hydrogen temperature at the end time of the predetermined time period.

[0079] Given the first hydrogen parameters, including the molar mass of hydrogen and the universal gas constant, determine the initial ratio of initial hydrogen pressure to initial hydrogen temperature, and the cutoff ratio of cutoff hydrogen pressure to cutoff hydrogen temperature.

[0080] Determine the difference between the starting ratio and the ending ratio;

[0081] Determine the first product of hydrogen volume and molar mass, and the ratio of the first product to the universal gas constant;

[0082] The product of the difference and the ratio is determined as the first consumption amount.

[0083] For example:

[0084] In the above steps, the pressure and hydrogen volume are determined according to the Clapeyron equation: PV = (m / M)RT. Where P is the gas pressure, in Pascals (Pa). V is the gas volume (same as the hydrogen volume in the aforementioned hydrogen storage system). m is the gas mass. M is the gas molar mass (same as the molar mass of hydrogen), and (m / M) is the number of moles. R is the universal gas constant, R = 8.31 J / mol. T is the gas temperature, in Kelvin. The hydrogen volume can be the volume of the hydrogen storage tank, which can be accurately measured. The molar mass of hydrogen is 2.02 g / mol.

[0085] As can be seen, given a fixed temperature and pressure, the mass of the first hydrogen gas can be obtained using the following formula:

[0086]

[0087] The change in hydrogen mass in the hydrogen storage system before and after a certain period of time (e.g., one hour) can be calculated as follows:

[0088]

[0089] This allows for the accurate determination of the initial consumption amount.

[0090] S2, determine the second consumption amount corresponding to multiple time intervals of the second hydrogen within a predetermined time period, wherein the second hydrogen is the hydrogen consumed by being converted into electrical energy;

[0091] Obtain second hydrogen parameters related to hydrogen, and the total number of cells in the fuel cell system;

[0092] Obtain the battery current values ​​corresponding to multiple time intervals;

[0093] Given that the second hydrogen parameters include the molar mass of hydrogen and the Faraday constant, determine the second product of the Faraday constant, molar mass, total number of battery cells, and predetermined coefficients;

[0094] The second product is determined by multiplying the battery current values ​​corresponding to the multiple time intervals, and the second consumption corresponding to the multiple time intervals is obtained.

[0095] For example:

[0096] Assuming we are calculating instantaneous hydrogen consumption, let's take a predetermined time interval of one second as an example to calculate the hydrogen consumption during this time period. The calculation formula is as follows:

[0097] The mass of hydrogen gas consumed in one second = I * N * M / (2 * F)

[0098] Where M is the molar mass of hydrogen (2.02 g / mol), F is the Faraday constant (C / mol), and I is the current (ampere). 1 ampere = 1 coulomb / second. A coulomb is the unit of charge (C), and one coulomb represents the charge of 6.25 × 10¹⁸ electrons. One mole corresponds to 6.022 × 10²³. Each cell in the fuel cell stack generates the same current, so the total charge is I*N, in coulombs (C), where N is the total number of cells in the stack. I*N / F is the total number of moles of electrons in one second. Since each hydrogen molecule contains two electrons, I*N / (2*F) can be used to represent the total number of hydrogen molecules in one second. Multiplying the total number of moles by the molar mass of hydrogen gives the mass of hydrogen consumed in one second, m. 1s (Unit: g / s)

[0099] S3, based on the first consumption and multiple second consumption, determine the total hydrogen consumption within a predetermined time period;

[0100] Here, we can first determine the sum of multiple secondary consumption quantities, such as the hydrogen consumption in the first second being m. 1s Similarly, by calculating the hydrogen consumption every second thereafter, we can obtain the total hydrogen consumption for one hour (as mentioned above, the sum of multiple secondary consumption amounts), i.e., m. 1h =m 1s +m 2s +m 3s +···+m 3600s .

[0101] Then, based on the first consumption and multiple second consumption amounts, the total hydrogen loss within the predetermined time period is determined. Specifically, it can be calculated using the following formula: Δm = m 1H -m 1h .

[0102] S4. Based on the total loss, determine the hydrogen correction amount corresponding to each of the multiple time intervals.

[0103] For example, the correction amount can be characterized by Δm / 3600.

[0104] S5. Based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the multiple time intervals, determine the instantaneous hydrogen consumption corresponding to the multiple time intervals.

[0105] Therefore, in the subsequent instantaneous hydrogen consumption, m is still calculated in real time according to the magnitude of the current. 1s Then, by adding a correction factor Δm / 3600 to this value, we can obtain the real-time instantaneous hydrogen consumption value m. i (Unit: g / s)

[0106] S6, upon receiving a request to obtain the hydrogen consumption per unit of fuel cell vehicle driving, responding to the request, determines the hydrogen consumption per unit of fuel cell vehicle driving corresponding to the multiple time intervals based on the vehicle speed and the instantaneous hydrogen consumption corresponding to the multiple time intervals, wherein the request to obtain the hydrogen consumption per unit of fuel cell vehicle driving carries the vehicle speed.

[0107] For example:

[0108] Combining the vehicle speed v (unit: km / h) and the instantaneous hydrogen consumption m i (Unit: g / s) can be used to obtain the hydrogen consumption per unit of fuel cell vehicle driving (unit: kg / 100km):

[0109]

[0110] As can be seen, the above method can achieve the goal of determining the hydrogen consumption per unit of fuel cell vehicle operation.

[0111] It should be noted that, in order for the correction amount to reflect the performance changes of the fuel cell stack during long-term operation, the correction amount should be recalculated periodically. Simultaneously, considering the accuracy of hydrogen storage system metering (ensuring a significant change in hydrogen storage capacity before and after calculation), the correction amount can be recalculated every 200-300 km for subsequent instantaneous hydrogen consumption correction.

[0112] The above optional implementation methods can achieve at least the following beneficial effects:

[0113] The most significant feature of this scheme is that it directly calculates real-time hydrogen consumption based on the current magnitude, making it relatively simple and straightforward. The loss of hydrogen in other parts of the system is estimated by the change in the amount of hydrogen in the storage system, and this is used to correct the instantaneous hydrogen consumption calculation. The periodic correction strategy better reflects changes in the stack's operating state. This scheme also eliminates the need for additional detection equipment, reducing costs and avoiding extra calibration and experimental activities.

[0114] Moreover, it avoids many difficulties in hydrogen consumption assessment in related technologies.

[0115] In other words, hydrogen cannot be completely converted into electrical energy during the operation of a fuel cell power system. Hydrogen inevitably suffers losses. For example, the airtightness of pipelines and the fuel cell stack cannot always be guaranteed to be completely leak-free; a small amount of hydrogen will permeate through the membrane electrode assembly (MEA) of the fuel cell stack without participating in the electrochemical reaction; to ensure the fuel cell stack operates at a suitable condition, the anode undergoes periodic nitrogen purging, inevitably releasing some hydrogen when the valve is opened. All these factors contribute to hydrogen loss, and these losses are difficult to directly detect and calculate.

[0116] To address this problem, relevant technologies offer the following solutions:

[0117] (1) Obtain hydrogen loss data under different operating conditions through a large amount of experimental data. This requires the establishment of a complex monitoring equipment environment. Another drawback is that the overall loss will change as the fuel cell stack is used continuously, so the current test results cannot be guaranteed to be valid indefinitely.

[0118] (2) Based on the structure of the fuel cell, hydrogen permeation and diffusion are modeled. Because there are many factors involved, the modeling is very difficult.

[0119] (3) The amount of hydrogen consumed is calculated by back-calorific value based on the current power; however, the loss of hydrogen in the whole process is not considered in such calculations (it is not directly converted into electrical power).

[0120] The methods provided in the optional embodiments of the present invention also overcome the above-mentioned problems.

[0121] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0123] Example 2

[0124] According to an embodiment of the present invention, an apparatus for implementing the above-described method for determining hydrogen consumption is also provided. Figure 3 This is a structural block diagram of a hydrogen consumption determination device according to an embodiment of the present invention, as shown below. Figure 3 As shown, the device includes: a first determining module 302, a second determining module 304, a third determining module 306 and a fourth determining module 308. The device will be described in detail below.

[0125] The first determining module 302 is used to determine the first consumption amount of the first hydrogen gas within a predetermined time period, and the second consumption amount of the second hydrogen gas corresponding to multiple time intervals within the predetermined time period, wherein the first hydrogen gas is the hydrogen gas stored in the hydrogen storage system, and the second hydrogen gas is the hydrogen gas that is converted into electrical energy and consumed.

[0126] The second determining module 304 is connected to the first determining module 302 and is used to determine the total amount of hydrogen consumed within a predetermined time period based on the first consumption amount and multiple second consumption amounts.

[0127] The third determining module 306 is connected to the second determining module 304 and is used to determine the hydrogen correction amount corresponding to multiple time intervals based on the total loss.

[0128] The fourth determining module 308, connected to the third determining module 306, is used to determine the hydrogen consumption corresponding to the multiple time intervals based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the multiple time intervals.

[0129] It should be noted here that the first determining module 302, the second determining module 304, the third determining module 306 and the fourth determining module 308 mentioned above correspond to steps S102 to S108 in the method for determining hydrogen consumption. The multiple modules and the corresponding steps are the same in terms of implementation examples and application scenarios, but are not limited to the content disclosed in the above embodiment 1.

[0130] Example 3

[0131] According to another aspect of the present invention, an electronic device is also provided, comprising: a processor; and a memory for storing processor-executable instructions, wherein the processor is configured to execute instructions to implement the hydrogen consumption determination method of any of the above embodiments.

[0132] Example 4

[0133] According to another aspect of the present invention, a computer-readable storage medium is also provided, which, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the hydrogen consumption determination method described above.

[0134] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0135] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0137] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0138] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0139] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0140] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining hydrogen consumption in a fuel cell system, characterized in that, include: A first consumption amount of a first hydrogen gas within a predetermined time period is determined, and a second consumption amount of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period is determined, wherein the first hydrogen gas is hydrogen gas stored in a hydrogen storage system, and the second hydrogen gas is hydrogen gas that is converted into electrical energy and consumed. Based on the first consumption amount and multiple second consumption amounts, the total hydrogen consumption amount within the predetermined time period is determined; Based on the total loss, determine the hydrogen correction amount corresponding to each of the multiple time intervals; Based on the second consumption amount and the corresponding hydrogen correction amount corresponding to the plurality of time intervals, the hydrogen consumption corresponding to the plurality of time intervals is determined. The determination of the first consumption of hydrogen within a predetermined time period includes: acquiring first hydrogen parameters related to hydrogen, and the hydrogen volume in the hydrogen storage system; acquiring the initial hydrogen pressure and initial hydrogen temperature at the start time of the predetermined time period, and acquiring the cutoff hydrogen pressure and cutoff hydrogen temperature at the end time of the predetermined time period; and determining the first consumption based on the first hydrogen parameters, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cutoff hydrogen pressure, and the cutoff hydrogen temperature. The method of determining the second consumption amount corresponding to multiple time intervals within the predetermined time period includes: acquiring second hydrogen parameters related to hydrogen and the total number of battery cells in the fuel cell system; acquiring battery current values ​​corresponding to the multiple time intervals; and determining the second consumption amount corresponding to the multiple time intervals based on the second hydrogen parameters, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals. The step of determining the second consumption corresponding to each of the multiple time intervals based on the second hydrogen parameter, the total number of battery cells, and the battery current value corresponding to each of the multiple time intervals includes: when the second hydrogen parameter includes the molar mass of hydrogen and the Faraday constant, determining the second product of the Faraday constant, the molar mass, the total number of battery cells, and a predetermined coefficient; and determining the product of the second product with the battery current value corresponding to each of the multiple time intervals to obtain the second consumption corresponding to each of the multiple time intervals.

2. The method according to claim 1, characterized in that, The determination of the first consumption amount based on the first hydrogen parameters, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cutoff hydrogen pressure, and the cutoff hydrogen temperature includes: Given that the first hydrogen parameters include the molar mass of hydrogen and the universal gas constant, determine the initial ratio of the initial hydrogen pressure to the initial hydrogen temperature, and the cutoff ratio of the cutoff hydrogen pressure to the cutoff hydrogen temperature. Determine the difference between the starting ratio and the ending ratio; Determine the first product of the hydrogen volume and the molar mass, and the ratio of the first product to the universal gas constant; The product of the difference and the ratio is determined as the first consumption amount.

3. The method according to claim 1, characterized in that, Before determining the second consumption amount of the second hydrogen gas corresponding to the multiple time intervals within the predetermined time period, the method further includes: Determine the instantaneous time interval; The predetermined time period is divided according to the instantaneous time interval to obtain the plurality of time intervals.

4. The method according to claim 1, characterized in that, Determining the total hydrogen consumption within the predetermined time period based on the first consumption and multiple second consumption amounts includes: Determine the total consumption of the plurality of second consumption quantities; The difference between the first consumption amount and the total consumption amount is determined as the total loss amount.

5. The method according to claim 1, characterized in that, The step of determining the hydrogen correction amount corresponding to each of the plurality of time intervals based on the total loss includes: Determine the number of intervals among the plurality of time intervals; The ratio of the total loss to the number of intervals is determined as the hydrogen correction amount corresponding to each of the multiple time intervals.

6. The method according to claim 1, characterized in that, The step of determining the hydrogen consumption corresponding to each of the plurality of time intervals based on the second consumption amount and the corresponding hydrogen correction amount for each of the plurality of time intervals includes: When all of the multiple time intervals are less than a predetermined interval, the instantaneous hydrogen consumption corresponding to each of the multiple time intervals is determined based on the second consumption amount and the corresponding hydrogen correction amount corresponding to each of the multiple time intervals.

7. The method according to any one of claims 1 to 6, characterized in that, After determining the hydrogen consumption corresponding to each of the multiple time intervals based on the second consumption amount and hydrogen correction amount corresponding to the multiple time intervals, the method further includes: Upon receiving a request to obtain the hydrogen consumption per unit of fuel cell vehicle driving, in response to the request, the hydrogen consumption per unit of fuel cell vehicle driving corresponding to each of the plurality of time intervals is determined based on the vehicle speed and the hydrogen consumption corresponding to each of the plurality of time intervals, wherein the request to obtain the hydrogen consumption per unit of fuel cell vehicle driving includes the vehicle speed.

8. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the method for determining the hydrogen consumption of a fuel cell system as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is able to perform the method for determining the hydrogen consumption of the fuel cell system as described in any one of claims 1 to 7.

Images