Hydrogen weight detection method and system, storage medium and vehicle

Abstract

The invention relates to the technical field of vehicle hydrogen weight detection, and discloses a hydrogen weight detection method and system, a storage medium and a vehicle. According to one scheme, the method comprises the steps that the weight of remaining hydrogen stored in a solid hydrogen storage device last time is read; obtaining the current value and the operation duration of the fuel cell stack; and determining the current residual hydrogen weight of the solid hydrogen storage device according to the current value, the operation duration and the residual hydrogen weight. In the embodiment of the invention, by reading the hydrogen weight of the solid hydrogen storage device before the initial power-off or the last power-off and combining the current value and the operation duration of the fuel cell stack, the dynamic and accurate calculation of the residual hydrogen weight is realized, the problem that the calculation of the residual hydrogen weight of the fuel cell vehicle applying the solid hydrogen storage device is inaccurate is solved, and the reliability of the fuel cell vehicle is improved. And the intelligent level of hydrogen energy management is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle hydrogen weight detection, and in particular to a hydrogen weight detection method, system, storage medium and vehicle. Background Art

[0002] With the increasing demand for environmental protection and sustainable development, fuel cell vehicles as a clean energy vehicle have received more and more attention. However, in terms of hydrogen storage in fuel cell vehicles, solid-state hydrogen storage technology has gradually become the mainstream technology due to its high energy density, excellent safety and fast hydrogen charging and discharging rate. Unlike traditional high-pressure hydrogen storage tanks, solid-state hydrogen storage devices store hydrogen by material adsorption and release of hydrogen, which has the advantages of low operating pressure and low leakage risk.

[0003] When using a solid-state hydrogen storage device as the gas source for a fuel cell vehicle, the remaining hydrogen weight needs to be estimated so that the driver can know the range of the fuel cell vehicle. However, existing fuel cell vehicles using solid-state hydrogen storage devices lack an effective method for detecting the remaining hydrogen weight. Therefore, how to accurately detect the remaining hydrogen weight of a fuel cell vehicle using a solid-state hydrogen storage device is an urgent problem to be solved. Summary of the invention

[0004] Embodiments of the present invention provide a hydrogen weight detection method, system, storage medium and vehicle to solve the problem of inaccurate detection of the remaining hydrogen weight of a fuel cell vehicle using a solid-state hydrogen storage device.

[0005] In a first aspect, a hydrogen weight detection method is provided, which is applied to a hydrogen management controller, and the method comprises: Read the remaining hydrogen weight stored in the last solid-state hydrogen storage device; Obtain the current value and operating time of the fuel cell stack; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the current value, the operating time and the remaining hydrogen weight.

[0006] In one embodiment, determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight includes: Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, wherein the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates; Calculating the instantaneous hydrogen consumption corresponding to the current value; Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the remaining hydrogen weight and the total hydrogen consumption.

[0007] In one embodiment, the reading of the remaining weight of hydrogen stored in the solid-state hydrogen storage device last time includes: After the vehicle is powered on, the self-test program is started to perform a self-test on the hydrogen management controller and obtain the self-test result; If the self-test result is a self-test failure, closing the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack; If the self-test result is normal, the weight of the remaining hydrogen stored in the solid-state hydrogen storage device last time is read.

[0008] In one embodiment, the step of obtaining the current value and the operating time of the fuel cell stack includes: Determining whether the communication between the hydrogen management controller and the fuel cell control module is normal, wherein the fuel cell control module is used to obtain the current value and operating time of the fuel cell stack; If the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; If the communication is abnormal, the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack is closed.

[0009] In one embodiment, after determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight, the method further comprises: According to the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

[0010] In a second aspect, a hydrogen weight detection system is provided, the hydrogen weight detection system comprising a hydrogen management controller, a solid-state hydrogen storage device, a fuel cell stack and a fuel cell control module; wherein the hydrogen management controller is connected to the fuel cell control module, the fuel cell control module is connected to the fuel cell stack, and the fuel cell stack is connected to the solid-state hydrogen storage device; The hydrogen management controller is used to read the remaining hydrogen weight stored in the solid-state hydrogen storage device last time; The fuel cell control module is used to obtain the current value and operation time of the fuel cell stack; The hydrogen management controller is also used to obtain the current value and operating time of the fuel cell stack transmitted by the fuel cell control module; and determine the current remaining hydrogen weight of the solid-state hydrogen storage device based on the current value, the operating time and the remaining hydrogen weight.

[0011] In one embodiment, determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight includes: Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, wherein the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates; Calculating the instantaneous hydrogen consumption corresponding to the current value; Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the remaining hydrogen weight and the total hydrogen consumption.

[0012] In one embodiment, the hydrogen weight detection system further comprises a solenoid valve, a first end of the solenoid valve is connected to the hydrogen management controller, a second end is connected to the fuel cell stack, and a third end is connected to the solid-state hydrogen storage device; The hydrogen management controller is further used for: After the vehicle is powered on, a self-test program is started to perform a self-test on the hydrogen management controller to obtain a self-test result; If the self-test result is a self-test failure, closing the solenoid valve; If the self-test result is normal, the weight of the remaining hydrogen stored in the solid-state hydrogen storage device last time is read.

[0013] In one embodiment, the hydrogen management controller is further used for: Determining whether the communication between the hydrogen management controller and the fuel cell control module is normal; If the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; If the communication is abnormal, the solenoid valve is closed.

[0014] In one embodiment, the hydrogen management controller is further used for: According to the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

[0015] In a third aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the hydrogen weight detection method described in the first aspect is implemented.

[0016] In a fourth aspect, a vehicle is provided, comprising a hydrogen management controller for implementing the hydrogen weight detection method as described in the first aspect above, or the hydrogen weight detection system as described in the second aspect above.

[0017] One solution implemented by the above hydrogen weight detection method, system, storage medium and vehicle includes: reading the remaining hydrogen weight stored by the last solid-state hydrogen storage device; obtaining the current value and operating time of the fuel cell stack; and determining the current remaining hydrogen weight of the solid-state hydrogen storage device based on the current value, the operating time and the remaining hydrogen weight. In this embodiment, by reading the remaining hydrogen weight stored by the last solid-state hydrogen storage device and combining the current value and operating time of the fuel cell stack, a dynamic and accurate calculation of the remaining hydrogen weight is achieved, which solves the problem of inaccurate calculation of the remaining hydrogen weight of fuel cell vehicles using solid-state hydrogen storage devices, improves the intelligent level of hydrogen energy management, and avoids accidental parking or performance degradation due to insufficient hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 is a schematic diagram of a hydrogen weight detection system in one embodiment of the present invention; Figure 2 is a flow chart of a method for detecting hydrogen weight in one embodiment of the present invention; Figure 3 is another flow chart of a method for detecting hydrogen weight in one embodiment of the present invention; Figure 4 is another flow chart of a method for detecting hydrogen weight in one embodiment of the present invention; Figure 5 is another flow chart of a method for detecting hydrogen weight in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0021] In order to facilitate understanding of the technical solution of the present invention, the technical background of the present invention is first introduced as follows: In a solid-state hydrogen storage device, the detection of the remaining hydrogen weight usually relies on a mass flow meter. However, to ensure the accuracy of the calculation of the remaining hydrogen weight, the accuracy of the mass flow meter is extremely high. In addition, the mass flow meter is extremely sensitive to environmental conditions, and factors such as temperature, pressure, and vibration will affect it. This means that the mass flow meter needs to be calibrated and maintained regularly to ensure the accuracy of the mass flow meter, which undoubtedly brings many inconveniences to practical applications. Moreover, high-precision mass flow meters are often expensive, which increases the cost of use. Moreover, most of these mass flow meters are industrial flow meters, and their power supply voltage is generally 24V, and fuel cell vehicles cannot meet this power supply requirement, and thus cannot be used in fuel cell vehicles equipped with solid-state hydrogen storage devices.

[0022] The embodiment of the present invention provides a method for detecting the weight of hydrogen, which can be applied as follows: Figure 1 In the hydrogen weight detection system shown in the figure, the hydrogen weight detection system includes: Figure 1 The hydrogen management controller, solid-state hydrogen storage device, fuel cell stack, fuel cell control module, solenoid valve, hydrogen supply pipeline and instrument panel are shown. As an example, the first end of the hydrogen management controller is connected to the fuel cell control module, the second end of the hydrogen management controller is connected to the first end of the solenoid valve, the third end of the hydrogen management controller is connected to the instrument panel, the fuel cell control module is connected to the fuel cell stack, the fuel cell stack is connected to the second end of the solenoid valve, the third end of the solenoid valve is connected to one end of the solid-state hydrogen storage device, and the other end of the solid-state hydrogen storage device is connected to the hydrogen supply pipeline. Through the above connection method, the hydrogen management controller can obtain the current value and running time of the fuel cell stack, and then combine the remaining hydrogen weight stored in the last solid-state hydrogen storage device to achieve dynamic and accurate calculation of the remaining hydrogen weight, solve the problem of inaccurate calculation of the remaining hydrogen weight of fuel cell vehicles using solid-state hydrogen storage devices, improve the intelligent level of hydrogen energy management, and avoid accidental parking or performance degradation due to insufficient hydrogen. The following is a detailed discussion through specific embodiments.

[0023] First, as Figure 2 As shown, a method for detecting the weight of hydrogen is provided, and the method is applied in Figure 1 The hydrogen management controller in the example is used to illustrate, including the following steps: S10, reading the remaining weight of hydrogen stored in the solid-state hydrogen storage device last time.

[0024] In this embodiment, the last remaining hydrogen weight stored in the solid-state hydrogen storage device refers to the remaining hydrogen weight stored in the solid-state hydrogen storage device when the vehicle was last shut down or powered off. This value can be stored in a non-volatile storage medium of the hydrogen management controller (HMS), such as an EEPROM or Flash memory, so that the data can still be saved after the vehicle is powered off.

[0025] For example, when the vehicle was powered off last time, the hydrogen management controller stored the remaining hydrogen weight of 1000g. When the vehicle is powered on again, the hydrogen management controller reads this stored value (i.e., the remaining hydrogen weight before the last power off), which provides a calculation basis for using this stored value in subsequent steps to update and calculate the current remaining hydrogen weight, and allows users to accurately understand the current energy reserve status of the vehicle.

[0026] S20, obtaining the current value and operating time of the fuel cell stack.

[0027] In this embodiment, the current value refers to a parameter during the operation of the fuel cell stack, which characterizes the current output of the fuel cell stack, usually in amperes (A), and reflects the workload of the fuel cell stack in real time. The operating time refers to the cumulative operating time of the fuel cell stack from the start of operation to the current moment, usually in hours (h) or minutes (min).

[0028] In some embodiments, the hydrogen management controller maintains real-time communication with the fuel cell control module (FCCU) via a CNA line. The fuel cell control module is used to collect the current value and operating time of the fuel cell stack in real time. Further, the fuel cell control module transmits these real-time data (current value and operating time) to the hydrogen management controller via a CAN line (Controller Area Network) or other appropriate communication protocols, so that the hydrogen management controller can calculate the hydrogen consumption of the fuel cell stack at the current moment and the current remaining hydrogen weight of the solid-state hydrogen storage device in a timely manner based on the current value and operating time of the fuel cell stack obtained in real time.

[0029] S30. Determine the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight.

[0030] In some embodiments, after obtaining the current value and operating time of the fuel cell stack and the remaining hydrogen weight of the last solid-state hydrogen storage device, the hydrogen management controller further calculates the mass of hydrogen consumed during this period based on the current value and operating time. This process can be calculated according to a preset hydrogen consumption model, for example, the current value and operating time are input into the hydrogen consumption model to obtain the hydrogen consumption mass output by the hydrogen consumption model. Then, the remaining hydrogen weight recorded last time is subtracted from the hydrogen consumption mass to obtain the current remaining hydrogen weight of the solid-state hydrogen storage device.

[0031] For example, the last remaining hydrogen stored in the solid-state hydrogen storage device weighs 500 grams, the current value of the fuel cell stack is 8 amperes, and the operating time is 5 hours. According to the preset hydrogen consumption model, the weight of the consumed hydrogen is calculated to be 100 grams. Then, based on the last remaining hydrogen weight of 500 grams minus the calculated hydrogen consumption mass of 100 grams, the current remaining hydrogen weight of the solid-state hydrogen storage device is 400 grams.

[0032] It should be noted that, in addition to calculating the hydrogen consumption mass based on the above hydrogen consumption model, it can also be calculated by other methods, which is only used as an example here and does not constitute a limitation of the present invention.

[0033] It is worth noting that during the above-mentioned operating time, the hydrogen management controller will calculate the current hydrogen consumption mass based on the current value of the fuel cell stack obtained in real time, and update the remaining hydrogen weight on the dashboard in real time, so as to realize real-time monitoring of hydrogen consumption of the fuel cell vehicle.

[0034] To sum up, in a solution provided by an embodiment of the present invention, by reading the weight of hydrogen stored in the solid-state hydrogen storage device last time, and combining the current value and operating time of the fuel cell stack, a dynamic and accurate calculation of the remaining hydrogen weight is achieved, which solves the problem of inaccurate calculation of the remaining hydrogen weight of fuel cell vehicles using solid-state hydrogen storage devices, improves the intelligence level of hydrogen energy management, avoids unexpected parking or performance degradation due to insufficient hydrogen, and can achieve accurate hydrogen weight calculation without the need for high-precision mass flow meters or sensors, thereby reducing the cost of fuel cell vehicles.

[0035] In one embodiment, if Figure 3 As shown, in step S30, that is, determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight, includes the following steps: S31. Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, where the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates.

[0036] In this embodiment, the pre-calibrated corresponding relationship refers to the relationship between different current values ​​and corresponding hydrogen utilization rates, which can be obtained by pre-calibration through experiments. During the experiment, the current value of the fuel cell stack can be gradually changed, and the input amount of hydrogen and the amount of hydrogen actually participating in the reaction can be accurately measured at the same time. By calculating the ratio of the amount of hydrogen actually participating in the reaction to the amount of hydrogen input, the hydrogen utilization rate under different current values ​​is obtained, and then the corresponding relationship between the two is established.

[0037] For example, when the current value of the fuel cell stack is set to 5 amperes, the hydrogen input is measured by a high-precision gas flow meter to be 100 liters per hour. After a period of operation, the actual amount of hydrogen involved in the reaction is determined to be 40 liters per hour through chemical analysis and other methods. Then the hydrogen utilization rate at this time is the actual amount of hydrogen involved in the reaction (40 liters) divided by the hydrogen input (100 liters), that is, 40%. Next, the current value is adjusted to 10 amperes. The hydrogen input is measured again to be 120 liters per hour, while the actual amount of hydrogen involved in the reaction is 72 liters per hour. The hydrogen utilization rate at this time is 72 liters divided by 120 liters, which is equal to 60%. By constantly adjusting the current value and repeating the above measurement and calculation process, a series of hydrogen utilization rates under different current values ​​are obtained. For example, when the current value is 15 amperes, the hydrogen utilization rate is 70%; when the current value is 20 amperes, the hydrogen utilization rate is 75%, and so on. Finally, based on these experimental data, a corresponding relationship between different current values ​​and corresponding hydrogen utilization rates is established.

[0038] It should be noted that the above is only one method, and the present invention can also establish a corresponding relationship between the same current value and the corresponding hydrogen utilization rate through other methods, which does not constitute a limitation of the present invention.

[0039] S32. Calculate the instantaneous hydrogen consumption corresponding to the current value.

[0040] In this embodiment, according to the current value (e.g., 50A) obtained in step S20, the hydrogen management controller will use the current value of the fuel cell stack to calculate the instantaneous hydrogen consumption. The instantaneous hydrogen consumption refers to the amount of hydrogen consumed by the fuel cell stack per unit time. Specifically, it can be calculated by formula (1): in, is the instantaneous hydrogen consumption (g / s), is the molar mass of hydrogen (2 g / mol), is the number of cells in the fuel cell stack, is the current value (A), is the Faraday coefficient (approximately 96485C / mol), which indicates the amount of charge per mole of electrons.

[0041] For example, the current value is I = 50A, and the number of cells in the fuel cell stack is n = 100. The instantaneous hydrogen consumption calculated by formula (1) is: Through formula (1), the hydrogen management controller can calculate the instantaneous hydrogen consumption of the fuel cell stack under the current.

[0042] S33. Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value.

[0043] In this embodiment, the hydrogen management controller calculates the total hydrogen consumption during the operation time by formula (2) based on the operation time of the fuel cell stack, combined with the instantaneous hydrogen consumption and hydrogen utilization rate calculated in steps S31 to S32. The specific formula (2) is as follows: in, is the total hydrogen consumption (g), is the hydrogen utilization rate, and t is the operating time (s).

[0044] For example, the running time t is set to 1 hour, which is converted to 3600 seconds. In this process, it is assumed that the instantaneous hydrogen consumption per second is And hydrogen utilization It is not a fixed value, for example, it is 0.005 grams at the first second, 0.052 grams at the second second, 0.048 grams at the third second, and so on. The corresponding hydrogen utilization rate 0.9, 0.91, 0.88, and so on.

[0045] According to formula (2), the actual hydrogen consumption corresponding to each second must be calculated. Taking the first second as an example, 0.05 0.9 0.056 g, and 0.052 g in the second second 0.91 0.057 grams, and so on. Then the actual hydrogen consumption calculated every second during these 3600 seconds is accumulated to obtain the total hydrogen consumption during the entire operation time.

[0046] It should be noted that the above is only an example and does not constitute a limitation of the present invention.

[0047] S34. Determine the current remaining hydrogen weight of the solid-state hydrogen storage device according to the remaining hydrogen weight and the total hydrogen consumption.

[0048] In this embodiment, the current remaining hydrogen weight of the solid-state hydrogen storage device can be calculated based on the total hydrogen consumption calculated in the above steps S31 to S33 and the remaining hydrogen weight stored in the solid-state hydrogen storage device last time read in step S10. For example, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is 1000 grams, and the total hydrogen consumption calculated is 200g. Then the current remaining hydrogen weight is: 1000-200 = 800 grams.

[0049] Through the above process, the hydrogen management controller can accurately grasp the remaining hydrogen situation in the solid-state hydrogen storage device in real time, so as to make timely adjustments and decisions to ensure the stable operation of the hydrogen weight detection system and the rational use of hydrogen.

[0050] It should be noted that during the above operating time, the hydrogen management controller will update the remaining hydrogen weight on the dashboard in real time, for example, once every 100ms, so that the driver can know the cruising range of the fuel cell vehicle.

[0051] In one embodiment, if Figure 4 As shown, step S10, i.e., reading the remaining hydrogen weight stored in the solid-state hydrogen storage device last time, includes the following steps: S11. After the vehicle is powered on, a self-test program is started to perform a self-test on the hydrogen management controller to obtain a self-test result; S12, if the self-test result is a self-test failure, closing the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack; S13. If the self-test result is normal, read the remaining hydrogen weight stored in the solid-state hydrogen storage device last time.

[0052] In this embodiment, after the vehicle is powered on, the hydrogen management system will automatically start a self-test program to check the working status of the hydrogen management controller and related components. The purpose is to ensure that the hardware and software of the hydrogen weight detection system operate normally and avoid hydrogen leakage or abnormal operation of the fuel cell stack due to faults.

[0053] As an example, during the self-test process, the hydrogen management controller can check whether it can control the normal opening and closing of the solenoid valve connected to the solid-state hydrogen storage device and the fuel cell stack, control the normal opening and closing of the fuel cell stack, and whether the hydrogen management controller itself is faulty. If the self-test result is a self-test failure, the hydrogen management controller will immediately implement safety protection measures, such as closing the solenoid valve set between the solid-state hydrogen storage device and the fuel cell stack to avoid hydrogen leakage or other safety hazards. If the self-test result is normal, the hydrogen management controller will read the remaining hydrogen weight stored in the solid-state hydrogen storage device last time.

[0054] In one embodiment, if Figure 5As shown, step S20, that is, obtaining the current value and operating time of the fuel cell stack, includes the following steps: S21, determining whether the communication between the hydrogen management controller and the fuel cell control module is normal, wherein the fuel cell control module is used to obtain the current value and operation time of the fuel cell stack; S22, if the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; S23. If the communication is abnormal, close the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack.

[0055] In this embodiment, when obtaining the current value and operating time of the fuel cell stack, it is necessary to first determine whether the communication between the hydrogen management controller and the fuel cell control module is normal. If the communication between the hydrogen management controller and the fuel cell control module is normal, the current value and operating time of the fuel cell stack transmitted by the fuel cell control module will be obtained normally. If the communication between the hydrogen management controller and the fuel cell control module is abnormal, the hydrogen management controller may not be able to obtain the current value and operating time of the fuel cell stack at this time, or the obtained current value and operating time of the fuel cell stack are wrong. In order to avoid malfunctions, at this time, it is necessary to close the solenoid valve provided between the solid-state hydrogen storage device and the fuel cell stack to prevent hydrogen from continuing to flow to the fuel cell stack and avoid potential safety hazards.

[0056] In one embodiment, in step S30, that is, after determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight, the following steps are included: S40: Based on the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

[0057] In this embodiment, after calculating the current remaining hydrogen weight, the hydrogen management controller will determine whether the vehicle is powered off. If the vehicle is powered off, the hydrogen management controller will update the remaining hydrogen weight stored in the last solid-state hydrogen storage device based on the current remaining hydrogen weight, providing accurate initial data for the next calculation. In this way, the next time the vehicle is started, the hydrogen management controller can start calculations based on the latest remaining hydrogen weight, avoiding errors caused by using old data. If the power is not turned off, it will continue to determine whether the communication between the hydrogen management controller and the fuel cell control module is normal, so as to update the current remaining hydrogen weight in real time.

[0058] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0059] Second, as Figure 1 As shown, a hydrogen weight detection system is provided, the hydrogen weight detection system includes a hydrogen management controller, a solid-state hydrogen storage device, a fuel cell stack and a fuel cell control module; wherein the hydrogen management controller is connected to the fuel cell control module, the fuel cell control module is connected to the fuel cell stack, and the fuel cell stack is connected to the solid-state hydrogen storage device; The hydrogen management controller is used to read the remaining hydrogen weight stored in the solid-state hydrogen storage device last time; The fuel cell control module is used to obtain the current value and operation time of the fuel cell stack; The hydrogen management controller is also used to obtain the current value and operating time of the fuel cell stack transmitted by the fuel cell control module; and determine the current remaining hydrogen weight of the solid-state hydrogen storage device based on the current value, the operating time and the remaining hydrogen weight.

[0060] In one embodiment, determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight includes: Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, wherein the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates; Calculating the instantaneous hydrogen consumption corresponding to the current value; Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the remaining hydrogen weight and the total hydrogen consumption.

[0061] In one embodiment, the hydrogen weight detection system further comprises a solenoid valve, a first end of the solenoid valve is connected to the hydrogen management controller, a second end is connected to the fuel cell stack, and a third end is connected to the solid-state hydrogen storage device; The hydrogen management controller is further used for: After the vehicle is powered on, a self-test program is started to perform a self-test on the hydrogen management controller to obtain a self-test result; If the self-test result is a self-test failure, closing the solenoid valve; If the self-test result is normal, the weight of the remaining hydrogen stored in the solid-state hydrogen storage device last time is read.

[0062] In one embodiment, the hydrogen management controller is further used for: Determining whether the communication between the hydrogen management controller and the fuel cell control module is normal; If the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; If the communication is abnormal, the solenoid valve is closed.

[0063] In one embodiment, the hydrogen management controller is further used for: According to the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

[0064] In summary, a solution provided in an embodiment of the present invention includes: a hydrogen management controller, a solid-state hydrogen storage device, a fuel cell stack and a fuel cell control module; the hydrogen management controller realizes dynamic and accurate calculation of the remaining hydrogen weight by reading the remaining hydrogen weight stored in the solid-state hydrogen storage device last time and obtaining the current value and operating time of the fuel cell stack transmitted by the fuel cell control module, thereby solving the problem of inaccurate calculation of the remaining hydrogen weight of fuel cell vehicles using solid-state hydrogen storage devices, improving the intelligence level of hydrogen energy management, avoiding accidental parking or performance degradation due to insufficient hydrogen, and realizing accurate hydrogen weight calculation without the need for high-precision mass flow meters or sensors, thereby reducing the cost of fuel cell vehicles.

[0065] It should be noted that the specific limitations on the hydrogen weight detection system can be found in the above limitations on the hydrogen weight detection method. In order to avoid repetition, it will not be repeated here.

[0066] In a third aspect, a computer-readable storage medium is provided, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the following steps are implemented: Read the remaining hydrogen weight stored in the last solid-state hydrogen storage device; Obtain the current value and operating time of the fuel cell stack; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the current value, the operating time and the remaining hydrogen weight.

[0067] In a fourth aspect, a vehicle is provided, comprising a hydrogen management controller for implementing the hydrogen weight detection method as described in the first aspect above, or the hydrogen weight detection system as described in the second aspect above.

[0068] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0069] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0070] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for detecting the weight of hydrogen, characterized in that: The method comprises: Read the remaining hydrogen weight stored in the last solid-state hydrogen storage device; Obtain the current value and operating time of the fuel cell stack; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the current value, the operating time and the remaining hydrogen weight.

2. The hydrogen weight detection method according to claim 1, characterized in that: The determining, according to the current value, the operating time and the remaining hydrogen weight, of the current remaining hydrogen weight of the solid-state hydrogen storage device comprises: Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, wherein the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates; Calculating the instantaneous hydrogen consumption corresponding to the current value; Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the remaining hydrogen weight and the total hydrogen consumption.

3. The hydrogen weight detection method according to claim 1, characterized in that: The reading of the remaining hydrogen weight stored in the solid-state hydrogen storage device last time includes: After the vehicle is powered on, the self-test program is started to perform a self-test on the hydrogen management controller and obtain the self-test result; If the self-test result is a self-test failure, closing the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack; If the self-test result is normal, the weight of the remaining hydrogen stored in the solid-state hydrogen storage device last time is read.

4. The method for detecting the weight of hydrogen according to any one of claims 1 to 3, characterized in that: The obtaining of the current value and the operating time of the fuel cell stack includes: Determining whether the communication between the hydrogen management controller and the fuel cell control module is normal, wherein the fuel cell control module is used to obtain the current value and operating time of the fuel cell stack; If the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; If the communication is abnormal, the solenoid valve disposed between the solid-state hydrogen storage device and the fuel cell stack is closed.

5. The hydrogen weight detection method according to any one of claims 1 to 3, characterized in that: After determining the current remaining hydrogen weight of the solid-state hydrogen storage device according to the current value, the operating time and the remaining hydrogen weight, the method further comprises: According to the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

6. A hydrogen weight detection system, characterized in that: The hydrogen weight detection system includes a hydrogen management controller, a solid-state hydrogen storage device, a fuel cell stack and a fuel cell control module; wherein the hydrogen management controller is connected to the fuel cell control module, the fuel cell control module is connected to the fuel cell stack, and the fuel cell stack is connected to the solid-state hydrogen storage device; The hydrogen management controller is used to read the remaining hydrogen weight stored in the solid-state hydrogen storage device last time; The fuel cell control module is used to obtain the current value and operation time of the fuel cell stack; The hydrogen management controller is also used to obtain the current value and operating time of the fuel cell stack transmitted by the fuel cell control module; and determine the current remaining hydrogen weight of the solid-state hydrogen storage device based on the current value, the operating time and the remaining hydrogen weight.

7. The hydrogen weight detection system according to claim 6, characterized in that: The determining, according to the current value, the operating time and the remaining hydrogen weight, of the current remaining hydrogen weight of the solid-state hydrogen storage device comprises: Determine the hydrogen utilization rate corresponding to the current value according to a pre-calibrated corresponding relationship, wherein the corresponding relationship is the relationship between different current values ​​and corresponding hydrogen utilization rates; Calculating the instantaneous hydrogen consumption corresponding to the current value; Obtaining a total hydrogen consumption according to the operating time and the hydrogen utilization rate and the instantaneous hydrogen consumption corresponding to the current value; The current remaining hydrogen weight of the solid-state hydrogen storage device is determined according to the remaining hydrogen weight and the total hydrogen consumption.

8. The hydrogen weight detection system according to claim 6, characterized in that: The hydrogen weight detection system further comprises an electromagnetic valve, a first end of which is connected to the hydrogen management controller, a second end of which is connected to the fuel cell stack, and a third end of which is connected to the solid-state hydrogen storage device; The hydrogen management controller is further used for: After the vehicle is powered on, a self-test program is started to perform a self-test on the hydrogen management controller to obtain a self-test result; If the self-test result is a self-test failure, closing the solenoid valve; If the self-test result is normal, the weight of the remaining hydrogen stored in the solid-state hydrogen storage device last time is read.

9. The hydrogen weight detection system according to claim 8, characterized in that: The hydrogen management controller is further used for: Determining whether the communication between the hydrogen management controller and the fuel cell control module is normal; If the communication is normal, obtaining the current value and operation time of the fuel cell stack transmitted by the fuel cell control module; If the communication is abnormal, the solenoid valve is closed.

10. The hydrogen weight detection system according to any one of claims 6 to 9, characterized in that: The hydrogen management controller is further used for: According to the current remaining hydrogen weight, the remaining hydrogen weight stored in the solid-state hydrogen storage device last time is updated.

11. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the hydrogen weight detection method according to any one of claims 1 to 5 are implemented.

12. A vehicle, characterized in that: The vehicle includes a hydrogen management controller for implementing the hydrogen weight detection method according to any one of claims 1 to 5, or a hydrogen weight detection system according to any one of claims 6 to 10.

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