Method and device for determining hydrogen consumption and electronic equipment

Abstract

The invention discloses a hydrogen consumption determination method and device and electronic equipment. The method comprises the steps that first consumption of first hydrogen in a preset time period and second consumption corresponding to multiple time intervals of second hydrogen in the preset time period are determined, the first hydrogen is hydrogen stored in a hydrogen storage system, and the second hydrogen is hydrogen which is converted into electric energy consumption; according to the first consumption amount and the multiple second consumption amounts, the total consumption amount of hydrogen in the preset time period is determined; hydrogen correction values corresponding to the multiple time intervals are determined according to the total loss amount; and determining hydrogen consumption corresponding to the plurality of time intervals according to the second consumption corresponding to the plurality of time intervals and the corresponding hydrogen correction amount. According to the method and the device, the technical problem that the determined hydrogen consumption is inaccurate due to the fact that hydrogen determination is time-consuming in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of fuel cells, and in particular to a method, device and electronic equipment for determining hydrogen consumption. Background Art

[0002] The calculation and display of hydrogen consumption in hydrogen fuel cell electric vehicles allows drivers to always be aware of the operating status of the fuel cell system. Currently, the test method for hydrogen consumption has the technical problem of inaccurately determining hydrogen consumption.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present invention provide a method, device, and electronic device for determining hydrogen consumption, so as to at least solve the technical problem in the related art of inaccurate hydrogen consumption when determining hydrogen consumption.

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

[0006] Optionally, determining the first consumption of the first hydrogen within a predetermined time period includes: obtaining a first hydrogen parameter related to hydrogen, and the volume of hydrogen in the hydrogen storage system; obtaining a starting hydrogen pressure and a starting hydrogen temperature corresponding to the starting time of the predetermined time period, and obtaining a cut-off hydrogen pressure and a cut-off hydrogen temperature corresponding to the end time of the predetermined time period; determining the first consumption based on the first hydrogen parameter, the hydrogen volume, the starting hydrogen pressure, the starting hydrogen temperature, the cut-off hydrogen pressure, and the cut-off hydrogen temperature.

[0007] Optionally, determining the first consumption based on the first hydrogen parameter, the hydrogen volume, the starting hydrogen pressure, the starting hydrogen temperature, the cut-off hydrogen pressure, and the cut-off hydrogen temperature includes: when the first hydrogen parameter includes the molar mass of hydrogen and the universal gas constant, determining the starting ratio of the starting hydrogen pressure to the starting hydrogen temperature, and the cut-off ratio of the cut-off hydrogen pressure to the cut-off hydrogen temperature; determining the difference between the starting ratio and the cut-off ratio; determining a 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.

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

[0009] Optionally, determining the second consumption corresponding to the multiple time intervals respectively based on the second hydrogen parameter, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals respectively 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; determining the product of the second product and the battery current values ​​corresponding to the multiple time intervals respectively, to obtain the second consumption corresponding to the multiple time intervals respectively.

[0010] Optionally, before determining the second consumption of the second hydrogen corresponding to multiple time intervals within the predetermined time period, the method further includes: determining an instantaneous time interval; and 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 multiple second consumptions includes: determining the sum of the consumption of the multiple second consumptions; and determining the difference between the first consumption and the sum of the consumption as the total consumption.

[0012] Optionally, determining the hydrogen correction amounts corresponding to the multiple time intervals respectively based on the total loss amount includes: determining the number of intervals in the multiple time intervals; and determining the ratio of the total loss amount to the number of intervals as the hydrogen correction amounts corresponding to the multiple time intervals respectively.

[0013] Optionally, the hydrogen consumption corresponding to the multiple time intervals is determined based on the second consumption corresponding to the multiple time intervals and the corresponding hydrogen correction amount, including: when the multiple time intervals are all less than the predetermined interval, the instantaneous hydrogen consumption corresponding to the multiple time intervals is determined based on the second consumption corresponding to the multiple time intervals and the corresponding hydrogen correction amount.

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

[0015] According to one aspect of an embodiment of the present invention, a device for determining hydrogen consumption is provided, including: a first determination module for determining a first consumption of a first hydrogen within a predetermined time period, and a second consumption of a second hydrogen corresponding to multiple time intervals within the predetermined time period, wherein the first hydrogen is the hydrogen stored in the hydrogen storage system, and the second hydrogen is the hydrogen converted into electrical energy for consumption; a second determination module for determining the total consumption of hydrogen within the predetermined time period based on the first consumption and multiple second consumptions; a third determination module for determining the hydrogen correction amounts corresponding to the multiple time intervals based on the total consumption; and a fourth determination module for determining the hydrogen consumption corresponding to the multiple time intervals based on the second consumption corresponding to the multiple time intervals and the corresponding hydrogen correction amounts.

[0016] According to one aspect of an embodiment of the present invention, an electronic device is provided, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement any of the above methods for determining hydrogen consumption.

[0017] According to one aspect of an embodiment of the present invention, a computer-readable storage medium is provided. When instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute any of the above-mentioned methods for determining hydrogen consumption.

[0018] In an embodiment of the present invention, a first consumption of a first hydrogen gas within a predetermined time period and second consumption of a 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 converted into electrical energy for consumption. Based on the first consumption and the multiple second consumptions, a total hydrogen consumption within the predetermined time period is determined. Based on the total consumption, hydrogen correction amounts corresponding to the multiple time intervals are determined. Based on the second consumption and the corresponding hydrogen correction amounts corresponding to the multiple time intervals, the hydrogen consumption corresponding to the multiple time intervals is determined. In the above steps, since the first consumption is the total consumption of hydrogen, and the multiple second consumptions are the consumption of hydrogen converted into electrical energy, the amount of hydrogen loss can be determined through the first consumption and the multiple consumptions, and then the hydrogen correction amount can be determined. Then, based on the second consumption corresponding to the multiple time intervals and the corresponding hydrogen correction amount, the hydrogen consumption corresponding to the multiple time intervals can be determined. Since the lost hydrogen is also taken into account, the determined hydrogen consumption will be more accurate, thereby solving the technical problem of inaccurate hydrogen consumption when determining hydrogen consumption in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

[0021] Figure 2 1 is a schematic diagram of the main structure of the anode side of a fuel cell system provided in an optional embodiment of the present invention;

[0022] Figure 3 4 is a structural block diagram of a device for determining hydrogen consumption according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[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 of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

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

[0028] Step S102, determining a first consumption of a first hydrogen gas within a predetermined time period, and a second consumption of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period, wherein the first hydrogen gas is hydrogen stored in the hydrogen storage system, and the second hydrogen gas is hydrogen converted into electrical energy for consumption;

[0029] In step S102 provided in the present application, the solution provided in the present application can be applied to a fuel cell scenario. In this step, the first consumption of the first hydrogen in a predetermined time period is obtained, as well as the second consumption of the second hydrogen corresponding to multiple time intervals in the predetermined time period. Among them, the predetermined time period can be customized according to the actual application and scenario, and the multiple time intervals can also 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 a scenario of instantaneous hydrogen consumption (such as one second is called instantaneous). Considering that it is a scenario for instantaneous hydrogen consumption, the multiple time intervals can be time intervals in units of 1s. Determining the first consumption of the first hydrogen in the predetermined time period is to determine the consumption of hydrogen stored in the hydrogen storage system within 1 hour. Determining the second consumption of the second hydrogen corresponding to multiple time intervals in the predetermined time period is to determine the hydrogen consumption corresponding to each second in the 1 hour from 13:00 to 14:00. It should be noted that the hydrogen consumption here refers to the consumption of hydrogen converted into electrical energy.

[0030] Step S104, determining a total hydrogen consumption within a predetermined time period based on the first consumption and a plurality of second consumptions;

[0031] In step S104 of the present application, the total hydrogen loss within a predetermined time period is determined based on the first consumption and multiple second consumptions. While hydrogen should be converted into electrical energy for consumption, in actual applications, some hydrogen may be lost, such as through discharge from the hydrogen drain valve, direct penetration into the cathode, or leakage from pipelines, hydrogen pumps, or the fuel cell stack. Therefore, the first consumption and multiple second consumptions can be used to determine the amount of hydrogen loss within the predetermined time period for subsequent calibration purposes.

[0032] Step S106, determining hydrogen correction amounts corresponding to a plurality of time intervals according to the total loss;

[0033] In step S106 provided in the present application, based on the total loss, the loss is divided into multiple time intervals, and the required hydrogen correction amount is determined for each time interval so as to facilitate subsequent correction.

[0034] In step S108 , the hydrogen consumption corresponding to each of the plurality of time intervals is determined according to the second consumption amounts and the corresponding hydrogen correction amounts corresponding to each of the plurality of time intervals.

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

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

[0037] As an optional embodiment, determining a first consumption of the first hydrogen within a predetermined time period includes: obtaining a first hydrogen parameter related to hydrogen, and a hydrogen volume in the hydrogen storage system; obtaining a starting hydrogen pressure and a starting hydrogen temperature corresponding to a starting time of the predetermined time period, and obtaining a cut-off hydrogen pressure and a cut-off hydrogen temperature corresponding to an ending time of the predetermined time period; determining the first consumption based on the first hydrogen parameter, the hydrogen volume, the starting hydrogen pressure, the starting hydrogen temperature, the cut-off hydrogen pressure, and the cut-off hydrogen temperature.

[0038] This embodiment describes a method for determining a first consumption of a first hydrogen gas. In a fuel cell, the amount of hydrogen consumed by direct conversion of hydrogen gas to electrical energy at a specific moment on the anode side can be estimated. Therefore, the hydrogen consumption at the start and end of a predetermined time period can be determined to determine the first consumption. The amount of hydrogen consumed by direct conversion of hydrogen gas to electrical energy at a specific moment on the anode side can be determined using the above data. This allows for accurate determination of the first hydrogen gas consumption at a specific moment, and thus, the first consumption.

[0039] As an optional embodiment, determining the first consumption based on the first hydrogen parameter, hydrogen volume, starting hydrogen pressure, starting hydrogen temperature, cut-off hydrogen pressure, and cut-off hydrogen temperature includes: when the first hydrogen parameter includes the molar mass of hydrogen and the universal gas constant, determining the starting ratio of the starting hydrogen pressure to the starting hydrogen temperature, and the cut-off ratio of the cut-off hydrogen pressure to the cut-off hydrogen temperature; determining the difference between the starting ratio and the cut-off ratio; determining a 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.

[0040] In this embodiment, the specific steps of determining the first consumption based on the first hydrogen parameter, hydrogen volume, starting hydrogen pressure, starting hydrogen temperature, ending hydrogen pressure, and ending hydrogen temperature are described. The change in the amount of hydrogen in the hydrogen storage system is mainly reflected in the change in the hydrogen pressure and temperature values ​​in the hydrogen storage tank. Therefore, the first consumption can be determined by these two related data. In this step, the starting ratio of the starting hydrogen pressure and the starting hydrogen temperature, as well as the cutoff ratio of the cutoff hydrogen pressure and the cutoff hydrogen temperature are determined; the difference between the starting ratio and the cutoff ratio is determined; the first product of the hydrogen volume and the molar mass, and the ratio of the first product to the universal constant of the gas are determined, and the product of the difference and the ratio is determined as the first consumption, thereby achieving the effect of accurately determining the first consumption.

[0041] In the above steps, the determination is based on the Clapeyron equation, which relates pressure to hydrogen volume: PV = (m / M)RT. Here, P is the gas pressure, measured in Pascals. V is the gas volume. m is the gas mass. M is the molar mass of the gas, with (m / M) representing the number of moles. R is the universal gas constant, R = 8.31 J / mol. T is the gas temperature, measured in Kelvin. The molar mass of hydrogen by volume is 2.02 g / mol.

[0042] It can be seen that when the temperature and pressure are determined, the mass of the first hydrogen can be obtained by the following formula:

[0043]

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

[0045]

[0046] That is, the purpose of accurately determining the first consumption can be achieved.

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

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

[0049] As an optional embodiment, second consumptions corresponding to multiple time intervals are determined based on a second hydrogen parameter, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals, including: when the second hydrogen parameter includes the molar mass of hydrogen and the Faraday constant, determining a 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 second consumptions corresponding to the multiple time intervals.

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

[0051] For example: Since the calculation is for the instantaneous hydrogen consumption with an interval of 1 second, the hydrogen consumption within the predetermined time interval of one second is calculated. The calculation formula is as follows:

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

[0053] Among them, M is the molar mass of hydrogen: 2.02g / mol, F is the Faraday constant: the unit of charge per mole of electrons is C / mol, and I is the current, measured in amperes. 1 ampere = 1 coulomb / second. Coulomb is the unit of charge C, and one coulomb is the charge of 6.25*10 to the 18th power electrons. One mole corresponds to 6.022*10 to the 23rd power. Each battery in the battery stack will generate the same current, so the total amount of charge is I*N, in coulomb (C), where N is the total number of batteries in the battery stack; I*N / F is the total molar number of electrons in this second; because each hydrogen molecule has two electrons, the total molar number of hydrogen molecules in this second can be expressed as I*N / (2*F); the total molar number multiplied by the molar mass of hydrogen can be obtained as the mass m of hydrogen consumed in this second. 1s (Unit: g / s).

[0054] It can be seen that through the above method, the effect of accurately determining multiple second consumptions can be achieved.

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

[0056] In this embodiment, a method of determining a plurality of time intervals is described.

[0057] Assuming that the present application is to determine the instantaneous hydrogen consumption, the time interval can be determined to be very small when determining the time interval, so that the instantaneous hydrogen consumption can be determined more accurately.

[0058] It should be noted that a fuel cell system can include a hydrogen storage system, or the two can be used in parallel. The fuel cell stack belongs to the fuel cell system, not the hydrogen storage system. In the context of electric vehicles, when the fuel cell system and hydrogen storage system are used in parallel, they are both located inside the electric vehicle.

[0059] As an optional embodiment, the total hydrogen consumption within a predetermined time period is determined based on the first consumption and multiple second consumptions, including: determining the total consumption of multiple second consumptions; and determining the difference between the first consumption and the total consumption as the total consumption.

[0060] In this embodiment, the steps of determining the total consumption are described. Here, the sum of multiple second consumptions can be determined first, such as the hydrogen consumption in the first second is m 1s Similarly, the hydrogen consumption in each subsequent second can be calculated to obtain the total hydrogen consumption for one hour (such as the sum of the multiple second consumptions mentioned above), that is, m 1h =m 1s +m 2s +m3s +···+m 3600s Then, the total consumption of hydrogen in a predetermined time period is determined based on the first consumption and the plurality of second consumptions. Specifically, it can be calculated using the following formula: △m=m 1H -m 1h In this way, it is possible to ensure that the total losses are accurately determined.

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

[0062] This embodiment describes a method for determining hydrogen correction amounts corresponding to multiple time intervals. Specifically, the number of time intervals can be determined, and then the ratio of the total loss to the number of time intervals can be calculated as the hydrogen correction amount corresponding to each of the multiple time intervals. 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 accurate determination of the hydrogen correction amount corresponding to each of the multiple time intervals.

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

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

[0065] If the second consumption corresponding to multiple time intervals is m 1s , the hydrogen correction amount corresponding to multiple time intervals is represented by △m / 3600. Then in the subsequent instantaneous hydrogen consumption, m 1s The actual instantaneous hydrogen consumption value can be obtained by adding the correction value △m / 3600. In this way, a more accurate instantaneous hydrogen consumption can be determined.

[0066] As an optional embodiment, after determining the hydrogen consumption corresponding to multiple time intervals respectively based on the second consumption amount and the hydrogen correction amount corresponding to the multiple time intervals, it also includes: when receiving a request to obtain the unit hydrogen consumption of the fuel cell vehicle, responding to the request for the unit hydrogen consumption of the fuel cell vehicle, determining the unit hydrogen consumption of the fuel cell vehicle corresponding to the multiple time intervals respectively based on the vehicle speed and the hydrogen consumption corresponding to the multiple time intervals, wherein the request to obtain the unit hydrogen consumption of the fuel cell vehicle carries the vehicle speed.

[0067] This embodiment describes the steps involved in applying this method to a scenario involving determining the unit hydrogen consumption of a fuel cell vehicle. In this scenario, a request for the unit hydrogen consumption of the fuel cell vehicle can be received and responded to, thereby determining the unit hydrogen consumption of the fuel cell vehicle based on the determined hydrogen consumption corresponding to a plurality of time intervals. The unit hydrogen consumption of the fuel cell vehicle is hydrogen consumption data in kg / 100 km.

[0068] The conversion method is to convert and determine the unit hydrogen consumption of the fuel cell vehicle corresponding to the multiple time intervals according to the vehicle speed and the hydrogen consumption corresponding to the multiple time intervals.

[0069] For example:

[0070] Combined with the vehicle speed v (unit: km / h) and the hydrogen consumption value m i (Unit: g / s), we can get the unit hydrogen consumption of fuel cell vehicles (unit: kg / 100km):

[0071]

[0072] It can be seen that the above method can achieve the purpose of determining the unit hydrogen consumption of a fuel cell vehicle.

[0073] Based on the above embodiment and optional embodiment, an optional implementation manner 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 of the fuel cell system provided by an optional embodiment of the present invention. Figure 2 Introduce it in detail.

[0075] Common anode side main structures such as Figure 2As shown. When the fuel cell stack is running, the hydrogen in the anode side undergoes an electrochemical reaction and continuously generates electrical energy. Most of the hydrogen that does not have time to react will continuously circulate inside the anode side. Therefore, during the operation of the fuel cell stack, on the one hand, hydrogen will be directly consumed and converted into electrical energy. On the other hand, there will be several losses of hydrogen (failure to directly generate electrical energy): it is discharged by the hydrogen discharge valve, directly penetrates into the cathode, and leaks in pipelines, hydrogen pumps, and fuel cell stacks. Based on this, the optional implementation method of the present invention constructs an overall idea, which is to first estimate the amount of hydrogen consumed by the direct conversion of hydrogen on the anode side into electrical energy at the current moment; then, according to the change in the hydrogen amount in the hydrogen storage system, the previous hydrogen amount value is corrected (compensated); during the operation of the fuel-electric vehicle, the correction can be performed periodically to obtain more accurate hydrogen consumption estimation data. The detailed steps are introduced below:

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

[0077] obtaining a first hydrogen parameter related to hydrogen and a volume of hydrogen in the hydrogen storage system;

[0078] Obtaining a starting hydrogen pressure and a starting hydrogen temperature corresponding to a starting time of a predetermined time period, and obtaining a cutting-off hydrogen pressure and a cutting-off hydrogen temperature corresponding to an ending time of the predetermined time period;

[0079] When the first hydrogen parameter includes the molar mass of hydrogen and the universal gas constant, determining a starting ratio of a starting hydrogen pressure to a starting hydrogen temperature, and a cutting-off ratio of a cutting-off hydrogen pressure to a cutting-off hydrogen temperature;

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

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

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

[0083] For example:

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

[0085] It can be seen that when the temperature and pressure are determined, the mass of the first hydrogen can be obtained by the following formula:

[0086]

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

[0088]

[0089] That is, the purpose of accurately determining the first consumption can be achieved.

[0090] S2, determining second consumption amounts of second hydrogen corresponding to a plurality of time intervals within a predetermined time period, wherein the second hydrogen is hydrogen converted into electrical energy for consumption;

[0091] Obtaining a second hydrogen parameter related to hydrogen, the total number of cells in the fuel cell system;

[0092] Obtaining battery current values ​​corresponding to multiple time intervals respectively;

[0093] When the second hydrogen parameter includes the molar mass of hydrogen and the Faraday constant, determining a second product of the Faraday constant, the molar mass, the total number of cells, and the predetermined coefficient;

[0094] Determine products of the second product and battery current values ​​corresponding to the multiple time intervals, respectively, to obtain second consumptions corresponding to the multiple time intervals, respectively.

[0095] For example:

[0096] Assuming that the calculation is for instantaneous hydrogen consumption, we take one second as an example to calculate the hydrogen consumption during the predetermined time interval. The calculation formula is as follows:

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

[0098] Among them, M is the molar mass of hydrogen: 2.02g / mol, F is the Faraday constant: the unit of charge per mole of electrons is C / mol, and I is the current, measured in amperes. 1 ampere = 1 coulomb / second. Coulomb is the unit of charge C, and one coulomb is the charge of 6.25*10 to the 18th power electrons. One mole corresponds to 6.022*10 to the 23rd power. Each battery in the battery stack will generate the same current, so the total amount of charge is I*N, in coulomb (C), where N is the total number of batteries in the battery stack; I*N / F is the total molar number of electrons in this second; because each hydrogen molecule has two electrons, the total molar number of hydrogen molecules in this second can be expressed as I*N / (2*F); the total molar number multiplied by the molar mass of hydrogen can be obtained as the mass m of hydrogen consumed in this second. 1s (Unit: g / s).

[0099] S3, determining a total hydrogen consumption within a predetermined time period based on the first consumption and the plurality of second consumptions;

[0100] Here, we can first determine the sum of multiple second consumptions, such as the hydrogen consumption in the first second is m 1s Similarly, the hydrogen consumption in each subsequent second can be calculated to obtain the total hydrogen consumption for one hour (such as the sum of the multiple second consumptions mentioned above), that is, m 1h =m 1s +m 2s +m 3s +···+m 3600s .

[0101] Then, the total consumption of hydrogen in a predetermined time period is determined based on the first consumption and the plurality of second consumptions. Specifically, it can be calculated by the following formula: Δm=m 1H -m 1h .

[0102] S4, determining hydrogen correction amounts corresponding to the plurality of time intervals according to the total loss;

[0103] For example: the correction amount can be represented by △m / 3600.

[0104] S5 , determining instantaneous hydrogen consumption corresponding to the plurality of time intervals according to the second consumption amounts and the corresponding hydrogen correction amounts corresponding to the plurality of time intervals.

[0105] Then, in the subsequent instantaneous hydrogen consumption, m is still calculated in real time according to the current size. 1s Then, add the correction value △m / 3600 to get the real-time instantaneous hydrogen consumption value m i (Unit: g / s).

[0106] S6. Upon receiving a request for obtaining the unit hydrogen consumption of the fuel cell vehicle, in response to the request for obtaining the unit hydrogen consumption of the fuel cell vehicle, determine the unit hydrogen consumption of the fuel cell vehicle corresponding to the multiple time intervals according to the vehicle speed and the instantaneous hydrogen consumption corresponding to the multiple time intervals, wherein the request for obtaining the unit hydrogen consumption of the fuel cell vehicle carries the vehicle speed.

[0107] For example:

[0108] Combined with the vehicle speed v (unit: km / h) and the instantaneous hydrogen consumption value m i (Unit: g / s), we can get the unit hydrogen consumption of fuel cell vehicles (unit: kg / 100km):

[0109]

[0110] It can be seen that the above method can achieve the purpose of determining the unit hydrogen consumption of a fuel cell vehicle.

[0111] It should be noted that in order for the correction value to reflect changes in the performance of the fuel cell stack during long-term operation, it should be recalculated periodically. At the same time, considering the accuracy of the hydrogen storage system's measurement (to ensure that the hydrogen storage capacity changes significantly between calculations), the correction value can be recalculated every 200-300 km to correct for subsequent instantaneous hydrogen consumption.

[0112] Through the above optional implementation, at least the following beneficial effects can be achieved:

[0113] The key features of this solution are its relatively straightforward and simple calculation of real-time hydrogen consumption based directly on the current. Other hydrogen losses are estimated by changes in the hydrogen storage system's hydrogen volume, which is then used to correct the instantaneous hydrogen consumption calculation. This periodic correction strategy better reflects changes in the stack's operating status. This solution also eliminates the need for additional testing equipment, reducing costs and avoiding additional calibration and testing.

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

[0115] That is, during the operation of a fuel cell system, hydrogen cannot be fully converted into electricity. Hydrogen losses are inevitable. For example, the airtightness of pipelines and fuel cell stacks cannot always be guaranteed to be completely leak-proof; a small amount of hydrogen can permeate through the fuel cell's membrane electrode without participating in the electrochemical reaction; and to ensure the fuel cell stack operates in optimal conditions, the anode undergoes periodic nitrogen purge operations, which inevitably release some hydrogen when the valve is opened. These factors all contribute to hydrogen losses, and these losses are difficult to directly detect and calculate.

[0116] Faced with such problems, relevant technologies have the following ways to solve the problem:

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

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

[0119] (3) The hydrogen consumption is calculated based on the current power and the calorific value. However, this calculation does not take into account the loss of hydrogen during the entire process (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 aforementioned method embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0122] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it 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, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of various embodiments of the present invention.

[0123] Example 2

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

[0125] A first determining module 302 is configured to determine a first consumption of a first hydrogen gas within a predetermined time period, and a second consumption of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period, wherein the first hydrogen gas is hydrogen stored in the hydrogen storage system, and the second hydrogen gas is hydrogen converted into electrical energy for consumption;

[0126] A second determining module 304, connected to the first determining module 302, is configured to determine a total hydrogen consumption within a predetermined time period based on the first consumption and a plurality of second consumptions;

[0127] A third determining module 306, connected to the second determining module 304, is configured to determine hydrogen correction amounts corresponding to a plurality of time intervals according to the total loss amount;

[0128] The fourth determining module 308 is connected to the third determining module 306 and is configured to determine the hydrogen consumption corresponding to the plurality of time intervals according to the second consumption amounts and the corresponding hydrogen correction amounts corresponding to the plurality of time intervals.

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

[0130] Example 3

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

[0132] Example 4

[0133] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. When instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute any of the above methods for determining hydrogen consumption.

[0134] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0135] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made 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. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0137] The units described as separate components may or may not be physically separate, and 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 may be selected according to actual needs to achieve the purpose of the present embodiment.

[0138] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0139] If the integrated unit is implemented in the form of 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, 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0140] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for determining hydrogen consumption, characterized in that: include: Determining a first consumption of a first hydrogen gas within a predetermined time period, and a second consumption of a second hydrogen gas corresponding to a plurality of time intervals within the predetermined time period, wherein the first hydrogen gas is hydrogen stored in a hydrogen storage system, and the second hydrogen gas is hydrogen converted into electrical energy for consumption; determining a total hydrogen consumption within the predetermined time period based on the first consumption and a plurality of second consumptions; Determining hydrogen correction amounts corresponding to the plurality of time intervals respectively according to the total loss amount; The hydrogen consumption corresponding to the plurality of time intervals is determined according to the second consumption amounts and the corresponding hydrogen correction amounts corresponding to the plurality of time intervals.

2. The method according to claim 1, characterized in that The determining of a first consumption of the first hydrogen within a predetermined time period includes: Acquiring a first hydrogen parameter related to hydrogen and a volume of hydrogen in the hydrogen storage system; Obtaining a starting hydrogen pressure and a starting hydrogen temperature corresponding to a starting time of the predetermined time period, and obtaining a cutting-off hydrogen pressure and a cutting-off hydrogen temperature corresponding to an ending time of the predetermined time period; The first consumption is determined according to the first hydrogen parameter, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cut-off hydrogen pressure, and the cut-off hydrogen temperature.

3. The method according to claim 2, characterized in that The determining the first consumption according to the first hydrogen parameter, the hydrogen volume, the initial hydrogen pressure, the initial hydrogen temperature, the cut-off hydrogen pressure, and the cut-off hydrogen temperature includes: When the first hydrogen parameter includes the molar mass of hydrogen and the universal gas constant, determining a starting ratio of the starting hydrogen pressure to the starting hydrogen temperature, and a cutting-off ratio of the cutting-off hydrogen pressure to the cutting-off hydrogen temperature; determining a difference between the starting ratio and the cutoff ratio; determining a first product of the volume of the hydrogen gas and the molar mass, and a ratio of the first product to the universal gas constant; The product of the difference and the ratio is determined as the first consumption.

4. The method according to claim 1, wherein Determining second consumption amounts of the second hydrogen corresponding to a plurality of time intervals within the predetermined time period includes: Obtaining a second hydrogen parameter related to hydrogen, the total number of cells in the fuel cell system; Obtaining battery current values ​​corresponding to the multiple time intervals respectively; Second consumption amounts corresponding to the multiple time intervals are determined according to the second hydrogen parameter, the total number of battery cells, and the battery current values ​​corresponding to the multiple time intervals.

5. The method according to claim 4, characterized in that The determining, based on the second hydrogen parameter, the total number of batteries, and the battery current values ​​corresponding to the multiple time intervals, respectively, of the second consumption amounts corresponding to the multiple time intervals includes: When the second hydrogen parameter includes the molar mass of hydrogen and a Faraday constant, determining a second product of the Faraday constant, the molar mass, the total number of cells, and a predetermined coefficient; Determine products of the second product and the battery current values ​​corresponding to the multiple time intervals, respectively, to obtain second consumptions corresponding to the multiple time intervals, respectively.

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

7. The method according to claim 1, characterized in that The determining of the total hydrogen consumption within the predetermined time period based on the first consumption and the plurality of second consumptions includes: determining a consumption sum of the plurality of second consumption amounts; The difference between the first consumption and the total consumption is determined as the total loss.

8. The method according to claim 1, characterized in that Determining the hydrogen correction amounts corresponding to the plurality of time intervals respectively based on the total loss includes: determining a number of intervals in the plurality of time intervals; A ratio of the total loss amount to the number of intervals is determined as hydrogen correction amounts corresponding to the multiple time intervals respectively.

9. The method according to claim 1, characterized in that The determining of the hydrogen consumption corresponding to the plurality of time intervals respectively based on the second consumption amounts and the corresponding hydrogen correction amounts corresponding to the plurality of time intervals includes: When the multiple time intervals are all shorter than the predetermined interval, the instantaneous hydrogen consumption corresponding to the multiple time intervals is determined according to the second consumption amounts and the corresponding hydrogen correction amounts corresponding to the multiple time intervals.

10. The method according to any one of claims 1 to 9, characterized in that After determining the hydrogen consumption corresponding to the plurality of time intervals respectively based on the second consumption amounts and the hydrogen correction amounts corresponding to the plurality of time intervals, the method further includes: Upon receiving a request for obtaining the unit hydrogen consumption of the fuel cell vehicle, in response to the request, the unit hydrogen consumption of the fuel cell vehicle corresponding to the multiple time intervals is determined based on the vehicle speed and the hydrogen consumption corresponding to the multiple time intervals, wherein the request for obtaining the unit hydrogen consumption of the fuel cell vehicle carries the vehicle speed.

11. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method for determining hydrogen consumption according to any one of claims 1 to 10.

12. A computer-readable storage medium, characterized in that 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 method for determining hydrogen consumption according to any one of claims 1 to 10.

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