Hydrogen leakage control method and device, electronic equipment and vehicle

Abstract

The invention discloses a hydrogen leakage control method and device, electronic equipment and a vehicle, and relates to the field of hydrogen engines. And determining a first hydrogen leakage rate in the hydrogen engine and a second hydrogen leakage rate in the tail gas. And on the basis, the severity of hydrogen leakage is determined according to the obtained first hydrogen leakage rate and second hydrogen leakage rate, and the running state of the hydrogen engine is adjusted based on an adjustment strategy corresponding to the severity. The hydrogen leakage risk can be identified only according to the front and back temperature difference of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine, and the running state of the hydrogen engine can be adjusted in time according to the severity of leakage, so that the reliability and the safety of the hydrogen engine are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen engines, and in particular to a hydrogen leakage control method, device, electronic equipment and vehicle. Background Art

[0002] A hydrogen engine is an internal combustion engine that uses hydrogen as fuel. Compared to internal combustion engines using fuels like diesel and gasoline, hydrogen engines use carbon-free hydrogen as fuel. Theoretically, they produce no greenhouse gases or pollutants such as carbon dioxide, particulate matter, carbon monoxide, and hydrocarbons, making them a clean power system. However, hydrogen combustion is not as stable as fuels like diesel and gasoline. In cases of incomplete combustion or misfire, hydrogen engines will emit unburned hydrogen. Because hydrogen has a high risk of deflagration when exposed to air, timely detection of abnormal hydrogen emissions to avoid safety accidents has become a pressing issue. Summary of the Invention

[0003] In view of the above problems, this application provides a hydrogen leakage control method, device, electronic device and vehicle to achieve the purpose of improving the safety and reliability of hydrogen engines. The specific solution is as follows: A first aspect of the present application provides a hydrogen leakage control method, comprising: determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; The severity of the hydrogen leakage is determined according to the first hydrogen leakage amount and the second hydrogen leakage amount, and the operating state of the hydrogen engine is adjusted based on an adjustment strategy corresponding to the severity.

[0004] In one possible implementation, before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine, the method further includes: determining whether the temperature difference is greater than a leakage measurement value and whether a leakage control enabling condition is satisfied; When it is determined that the temperature difference is not greater than the leakage measurement value and / or the leakage control enabling condition is not satisfied, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply of the hydrogen engine is no longer performed.

[0005] In a possible implementation, the leakage control enabling condition includes: The hydrogen supply amount is greater than a supply threshold, the oxidation catalyst inlet temperature is greater than a temperature threshold, and the duration of the hydrogen engine being in the target operating condition is greater than a duration threshold.

[0006] In one possible implementation, determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine includes: determining a conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply; The first hydrogen leakage amount and the second hydrogen leakage amount are determined according to a theoretical calorific value corresponding to the hydrogen supply amount and the conversion efficiency.

[0007] In a possible implementation, determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply amount includes: Determining the actual calorific value of the oxidation catalyst according to the temperature difference and a heat calculation formula; The conversion efficiency is determined based on the ratio of the theoretical calorific value to the actual calorific value.

[0008] In a possible implementation, determining the first hydrogen leakage amount and the second hydrogen leakage amount according to the theoretical calorific value corresponding to the hydrogen supply amount and the conversion efficiency includes: Obtaining the first hydrogen leakage amount based on the theoretical calorific value ÷ the conversion efficiency ÷ the hydrogen calorific value; The second hydrogen leakage amount is obtained based on the theoretical calorific value ÷ (1-the conversion efficiency) ÷ the hydrogen calorific value.

[0009] In one possible implementation, determining the severity of the hydrogen leakage based on the first hydrogen leakage amount and the second hydrogen leakage amount, and adjusting the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity, includes: If both the first hydrogen leakage amount and the second hydrogen leakage amount are within the leakage range, adjusting the operating parameters of the hydrogen engine on the premise that the safety boundary conditions of the hydrogen engine are met; If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply to the hydrogen engine is cut off.

[0010] A second aspect of the present application provides a hydrogen leakage control device, comprising: a hydrogen leakage determination module, configured to determine a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; and An operating state adjustment module is configured to determine the severity of the hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjust the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity.

[0011] A third aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the electronic device can implement the hydrogen leakage control method of the first aspect or any implementation manner of the first aspect.

[0012] A fourth aspect of the present application provides a vehicle, comprising: the electronic device as described in the third aspect above.

[0013] In a fifth aspect, the present application provides a computer program product comprising computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the hydrogen leakage control method of the first aspect or any implementation of the first aspect.

[0014] In a sixth aspect, the present application provides a computer storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the hydrogen leakage control method of the first aspect or any implementation of the first aspect.

[0015] By utilizing the above-described technical solution, the hydrogen leakage control method provided in this application determines a first hydrogen leakage rate in the hydrogen engine and a second hydrogen leakage rate in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst in the hydrogen engine's aftertreatment system and the hydrogen supply to the hydrogen engine. Based on this, the severity of the hydrogen leakage is determined based on the first and second hydrogen leakage rates, and the operating state of the hydrogen engine is adjusted based on an adjustment strategy corresponding to the severity. This method enables the identification of hydrogen leakage risks based solely on the temperature difference between the front and rear of the oxidation catalyst and the hydrogen supply to the hydrogen engine, and allows the operating state of the hydrogen engine to be adjusted promptly based on the severity of the leakage, thereby ensuring the reliability and safety of the hydrogen engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0017] Figure 1 A flow chart of a hydrogen leakage control method provided in this application; Figure 2 A structural diagram of the post-processing system provided for this application; Figure 3 Another flow chart of a hydrogen leakage control method provided in this application; Figure 4 A structural diagram of a hydrogen leakage control device provided in this application; Figure 5 This is an architectural diagram of an electronic device provided in this application. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The terms used in the implementation methods of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application.

[0019] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0020] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0021] An engine's aftertreatment system is an exhaust purification system located at the engine's exhaust port. It typically includes a DOC (Diesel Oxidation Catalyst) and an SCR (Selective Catalytic Reduction). Using a catalyst, the engine's exhaust gas undergoes a series of reactions, removing harmful pollutants or particulate matter from the exhaust or converting them into harmless water, nitrogen, and carbon dioxide. Hydrogen engines still emit a small amount of nitrogen oxides, which react within the SCR. Furthermore, under transient operating conditions, cold starts, and misfires, unburned hydrogen may be emitted (hydrogen is not an atmospheric pollutant, but is a dangerous explosive). Therefore, a DOC is required to oxidize the hydrogen and further reduce hydrogen leakage from the exhaust.

[0022] Currently, the most common method for detecting hydrogen leaks is to use an oxygen sensor or nitrogen oxide sensor installed in the aftertreatment system. Based on the measured oxygen concentration and humidity, the amount of unburned hydrogen emitted by the hydrogen engine is calculated. This method relies on the nitrogen oxide sensor or oxygen sensor. To prevent condensation from affecting sensor performance, both sensors must meet dew point release conditions, such as an exhaust temperature greater than 200°C. This results in hydrogen leak detection not covering all operating conditions of hydrogen engines and no longer meeting the requirements for real-time detection.

[0023] In order to solve the above problems, the present invention provides a method for controlling hydrogen leakage. The method for controlling hydrogen leakage of the present invention is described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 1 A schematic diagram of a hydrogen leakage control method provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, a hydrogen leakage control method provided in an embodiment of the present application may include steps 101 to 102, and these steps are described in detail below.

[0025] 101. Determine a first hydrogen leakage rate in the hydrogen engine and a second hydrogen leakage rate in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply rate of the hydrogen engine.

[0026] In one embodiment, referring to Figure 2 As shown in the structural diagram of the post-processing system, temperature sensors are respectively provided before and after the DOC to monitor the temperatures at the inlet and outlet of the DOC, thereby obtaining the temperature difference between the two ends of the DOC. Based on the temperature difference, the actual heat generated on the DOC can be obtained according to the corresponding heat calculation formula of the DOC.

[0027] Then, based on the theoretical heat that can be generated on the DOC according to the predetermined hydrogen supply amount of the hydrogen engine, the conversion efficiency of the oxidation catalyst can be obtained according to the above actual heat and the theoretical heat.

[0028] Based on the conversion efficiency of the oxidation catalyst, the first hydrogen leakage rate of the hydrogen engine and the second hydrogen leakage rate in the exhaust after DOC can be calculated using the corresponding formula. Specifically, the first hydrogen leakage rate = theoretical calorific value ÷ conversion efficiency ÷ hydrogen calorific value. The second hydrogen leakage rate = theoretical calorific value ÷ (1 - conversion efficiency) ÷ hydrogen calorific value.

[0029] 102. Determine the severity of the hydrogen leakage based on the first hydrogen leakage amount and the second hydrogen leakage amount, and adjust the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity.

[0030] In one embodiment, based on the measured first hydrogen leakage amount of the hydrogen engine and the second hydrogen leakage amount in the exhaust gas after DOC, a corresponding adjustment strategy can be determined according to the severity of the two hydrogen leakage amounts to adjust the operating state of the hydrogen engine, thereby reducing hydrogen leakage and improving the safety and reliability of the hydrogen engine.

[0031] The severity of hydrogen leakage can be determined based on the leakage concentration of hydrogen. Usually, there is a risk of explosion when the concentration is greater than 4%. Therefore, different adjustment strategies are specified based on this standard to adjust the operation of the hydrogen engine.

[0032] As can be seen above, this hydrogen leakage control method can determine the hydrogen leakage situation based on the temperature difference before and after the DOC and the hydrogen supply to the hydrogen engine. It can then use different adjustment strategies to adjust the operation of the hydrogen engine according to the leakage level, ensuring the safe operation of the hydrogen engine. Furthermore, compared with existing detection methods based on oxygen sensors or nitrogen oxide sensors, this method can cover more operating conditions of hydrogen engines and has a wider range of applications.

[0033] In another embodiment, to further ensure the accuracy and reliability of hydrogen leak detection, the following processing is further included before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine: It is determined whether the temperature difference is greater than the leakage measurement value and whether the leakage control enable condition is met.

[0034] When it is determined that the temperature difference is not greater than the leakage measurement value and / or the leakage control enabling condition is not satisfied, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply of the hydrogen engine is no longer executed.

[0035] Specifically, the leakage control enabling conditions may include: a hydrogen supply greater than a supply threshold, an oxidation catalyst inlet temperature greater than a temperature threshold, and a duration of the hydrogen engine being in a target operating condition greater than a duration threshold.

[0036] For example, if the hydrogen supply to the hydrogen engine is greater than 500 kg / h, the oxidation catalyst inlet temperature is greater than 150°C, and the engine is in a stable operating state for at least 5 seconds, the leakage control enabling conditions can be determined to be met, and subsequent hydrogen leak detection can be carried out. The stable operating state can be characterized by the speed change rate and torque change rate of the hydrogen engine. For example, a speed change rate of less than 500 rpm / s or a torque change rate of less than 300 Nm / s can be determined to be a stable operating state.

[0037] Furthermore, to ensure the accuracy of hydrogen leakage detection, it is necessary to limit the temperature difference between the two ends of the DOC. For example, when the temperature difference is not less than 30°C, hydrogen leakage detection will obtain more accurate and reliable results.

[0038] It is understandable that the execution order of whether the above temperature difference is greater than the leakage measurement value and whether the leakage control enabling condition is met can be adjusted as needed, and the content of the above conditions can be adjusted and selected as needed, which is not limited here.

[0039] In some embodiments, determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine may specifically include: Step 11: Determine the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply.

[0040] Step 12: Determine a first hydrogen leakage amount and a second hydrogen leakage amount according to a theoretical calorific value corresponding to the hydrogen supply amount and the conversion efficiency.

[0041] Specifically, based on the obtained temperature difference, the actual calorific value of the oxidation catalyst can be determined according to the heat calculation formula. The conversion efficiency is then determined based on the ratio of the theoretical calorific value to the actual calorific value.

[0042] The actual calorific value can be calculated using the heat calculation formula: Q = CMT, where C represents the exhaust gas specific heat capacity, M represents the amount of hydrogen, and T represents the temperature change, or the temperature difference (temperature before and after DOC). If both M and C are known, the actual calorific value can be obtained based on the temperature difference. The theoretical calorific value can be calculated based on a pre-calibrated theoretical calorific value corresponding to a certain amount of hydrogen, resulting in conversion efficiency = theoretical calorific value ÷ actual calorific value.

[0043] In other embodiments, to improve the safety and reliability of the operation of the hydrogen engine, the above step 102, determining the severity of the hydrogen leakage based on the first hydrogen leakage amount and the second hydrogen leakage amount, and adjusting the operating state of the hydrogen engine based on the adjustment strategy corresponding to the severity, may specifically include: If the first hydrogen leakage amount and the second hydrogen leakage amount are both within the leakage range, the operating parameters of the hydrogen engine are adjusted on the premise that the safety boundary conditions of the hydrogen engine are met.

[0044] If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply to the hydrogen engine is cut off.

[0045] Specifically, when both the first and second hydrogen leakage rates are between 1% and 4%, the excess air coefficient, EGR rate, and other parameters can be reduced based on the hydrogen leakage rate, while ensuring that the safety boundary conditions of the hydrogen engine (such as the hydrogen engine does not experience detonation) are met, thereby reducing the hydrogen leakage rate. The excess air coefficient refers to the ratio of the actual amount of air supplied to fuel combustion to the theoretical amount of air. This can be reduced by adjusting the hydrogen nozzle angle, the fuel-air mixture ratio, and other factors to optimize the combustion process and reduce the additional air demand caused by incomplete combustion. The EGR rate is the ratio of the amount of recirculated exhaust gas to the total amount of intake air drawn into the cylinder. The EGR rate can be reduced by controlling the EGR valve opening.

[0046] When any of the above hydrogen leakage exceeds 4%, due to the high risk of explosion, the hydrogen supply to the hydrogen engine can be cut off and the user will be prompted to shut down.

[0047] Considering the risk of excessive hydrogen leakage, such as explosions caused by heating of the NOx sensor and resulting in hardware damage, a combustion parameter adjustment function can be enabled, for example, for pre-intervention before misfire diagnosis. When tail-exhaust hydrogen leakage exceeds a certain value, a protection function is activated, implementing torque limitation or hydrogen injection intervention to protect the reliability and safety of the engine and aftertreatment.

[0048] As a specific application of the above hydrogen leakage control method, refer to Figure 3 As shown, the following processing procedures may be specifically included: After the hydrogen engine starts running, it is first confirmed whether the hydrogen engine meets the above-mentioned leakage control enabling conditions. If the leakage control enabling conditions are met, it is determined whether the temperature difference is greater than the leakage measurement value. If it is greater than the leakage measurement value, the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas are determined based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply of the hydrogen engine.

[0049] If the first hydrogen leakage amount and the second hydrogen leakage amount are both within the leakage range, the operating parameters of the hydrogen engine are adjusted on the premise that the safety boundary conditions of the hydrogen engine are met.

[0050] If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply to the hydrogen engine is cut off.

[0051] A hydrogen leakage control method provided in an embodiment of the present application is described above. The following describes an apparatus for executing the above hydrogen leakage control method.

[0052] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of a hydrogen leakage control device provided in an embodiment of the present application. Figure 4 As shown, the hydrogen leakage control device comprises: The hydrogen leakage determination module 401 is configured to determine a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine. And, The operating state adjustment module 402 is configured to determine the severity of the hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjust the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity.

[0053] In one possible implementation, the hydrogen leakage control device further includes: a detection enabling module configured to, before determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine: determining whether the temperature difference is greater than the leakage measurement value and whether the leakage control enabling condition is met; When it is determined that the temperature difference is not greater than the leakage measurement value and / or the leakage control enabling condition is not satisfied, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply of the hydrogen engine is no longer executed.

[0054] In one possible implementation, the leakage control enabling condition in the detection enabling module includes: The hydrogen supply amount is greater than a supply threshold, the oxidation catalyst inlet temperature is greater than a temperature threshold, and the duration of the hydrogen engine being in the target operating condition is greater than a duration threshold.

[0055] In one possible implementation, the hydrogen leakage determination module 401 determines a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine, including: Determine the conversion efficiency of the oxidation catalyst based on the temperature difference and the hydrogen supply; The first hydrogen leakage amount and the second hydrogen leakage amount are determined according to the theoretical calorific value and the conversion efficiency corresponding to the hydrogen supply amount.

[0056] In one possible implementation, the process of the hydrogen leakage determination module 401 determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply includes: Determine the actual calorific value of the oxidation catalyst based on the temperature difference and the heat calculation formula; The conversion efficiency is determined based on the ratio of the theoretical calorific value to the actual calorific value.

[0057] In one possible implementation, the hydrogen leakage determination module 401 determines the first hydrogen leakage amount and the second hydrogen leakage amount according to the theoretical calorific value and conversion efficiency corresponding to the hydrogen supply amount, including: Based on the theoretical calorific value ÷ conversion efficiency ÷ hydrogen calorific value, a first hydrogen leakage amount is obtained; The second hydrogen leakage amount is obtained based on the theoretical calorific value ÷ (1-conversion efficiency) ÷ hydrogen calorific value.

[0058] In one possible implementation, the operating state adjustment module 402 determines the severity of the hydrogen leakage based on the first hydrogen leakage amount and the second hydrogen leakage amount, and adjusts the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity, including: If the first hydrogen leakage amount and the second hydrogen leakage amount are both within the leakage range, adjusting the operating parameters of the hydrogen engine on the premise that the safety boundary conditions of the hydrogen engine are met; If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply to the hydrogen engine is cut off.

[0059] An electronic device is also provided in an embodiment of the present application. Figure 5, which shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present application. The electronic devices in the embodiments of the present application may include, but are not limited to, ECUs (Electronic Control Units), VCUs (Vehicle Control Units), MCUs (Micro Controller Units), and HCUs (Hybrid Control Units). Figure 5 The electronic device shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0060] refer to Figure 5 As shown, the electronic device includes at least one processor 501 and a memory 502 connected to the processor 501, wherein: the memory is used to store computer programs; the processor 501 is used to execute the computer programs, so that the electronic device can implement the hydrogen leakage control method described in the above embodiment.

[0061] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any one of the hydrogen leakage control methods provided in the embodiments of the present application.

[0062] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any hydrogen leakage control method provided in the embodiment of the present application.

[0063] An embodiment of the present application also provides a vehicle, comprising the electronic device as described in the above embodiment.

[0064] It should also be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, in the drawings of the device embodiments provided in this application, the connection relationship between the modules indicates that there is a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines.

[0065] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course can also be implemented by special hardware including application-specific integrated circuits, special CPUs, special memories, special components, etc. In general, all functions performed by computer programs can be easily implemented with corresponding hardware, and the specific hardware structures used to implement the same function can also be diverse, such as analog circuits, digital circuits or special circuits, etc. However, for the present application, software program implementation is a better implementation method in most cases. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer's floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a number of instructions to enable a computer device (which can be a personal computer, training equipment, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

[0066] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0067] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a training device or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website, a computer, a training device or a data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integrations. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

Claims

1. A method for controlling hydrogen leakage, characterized in that: include: determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; The severity of the hydrogen leakage is determined according to the first hydrogen leakage amount and the second hydrogen leakage amount, and the operating state of the hydrogen engine is adjusted based on an adjustment strategy corresponding to the severity.

2. The hydrogen leakage control method according to claim 1, characterized in that: Before determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine, the method further includes: determining whether the temperature difference is greater than a leakage measurement value and whether a leakage control enabling condition is satisfied; When it is determined that the temperature difference is not greater than the leakage measurement value and / or the leakage control enabling condition is not satisfied, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas based on the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply of the hydrogen engine is no longer performed.

3. The hydrogen leakage control method according to claim 2, characterized in that: The leakage control enabling conditions include: The hydrogen supply amount is greater than a supply threshold, the oxidation catalyst inlet temperature is greater than a temperature threshold, and the duration of the hydrogen engine being in the target operating condition is greater than a duration threshold.

4. The hydrogen leakage control method according to claim 1, characterized in that: The method of determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine comprises: determining a conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply; The first hydrogen leakage amount and the second hydrogen leakage amount are determined according to a theoretical calorific value corresponding to the hydrogen supply amount and the conversion efficiency.

5. The hydrogen leakage control method according to claim 4, characterized in that: Determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply amount includes: Determining the actual calorific value of the oxidation catalyst according to the temperature difference and a heat calculation formula; The conversion efficiency is determined based on the ratio of the theoretical calorific value to the actual calorific value.

6. The hydrogen leakage control method according to claim 4, characterized in that: The determining the first hydrogen leakage amount and the second hydrogen leakage amount according to the theoretical calorific value corresponding to the hydrogen supply amount and the conversion efficiency includes: Obtaining the first hydrogen leakage amount based on the theoretical calorific value ÷ the conversion efficiency ÷ the hydrogen calorific value; The second hydrogen leakage amount is obtained based on the theoretical calorific value ÷ (1-the conversion efficiency) ÷ the hydrogen calorific value.

7. The hydrogen leakage control method according to any one of claims 1 to 6, characterized in that: The determining the severity of the hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjusting the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity, includes: If both the first hydrogen leakage amount and the second hydrogen leakage amount are within the leakage range, adjusting the operating parameters of the hydrogen engine on the premise that the safety boundary conditions of the hydrogen engine are met; If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply to the hydrogen engine is cut off.

8. A hydrogen leakage control device, characterized in that: include: a hydrogen leakage determination module, configured to determine a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas based on a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount to the hydrogen engine; as well as, An operating state adjustment module is configured to determine the severity of the hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjust the operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity.

9. An electronic device, characterized in that: comprising at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is configured to execute the computer program so as to enable the electronic device to implement the hydrogen leakage control method according to any one of claims 1 to 7.

10. A vehicle, characterized in that: include: The electronic device according to claim 9.

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