Hydrogen leakage control method and device, electronic device and vehicle

Abstract

The application discloses a hydrogen leakage control method and device, electronic equipment and vehicle, and relates to the field of hydrogen engines. The first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas are determined according to the temperature difference between the inlet and the outlet of the oxidation catalyst in the hydrogen engine aftertreatment system and the hydrogen supply amount of the hydrogen engine. On this basis, the severity of the hydrogen leakage is determined according to the obtained first hydrogen leakage amount and second hydrogen leakage amount, and the operating state of the hydrogen engine is adjusted based on the corresponding adjustment strategy of the severity. The hydrogen leakage risk can be identified only by the temperature difference before and after the oxidation catalyst and the hydrogen supply amount of the hydrogen engine, and the operating state of the hydrogen engine can be adjusted in time according to the severity of the leakage, so as to ensure the reliability and safety of the hydrogen engine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen engine, and particularly relates to a hydrogen leakage control method and device, electronic equipment and vehicle. BACKGROUND

[0002] The hydrogen engine is an internal combustion engine using hydrogen as fuel. Compared with the internal combustion engine using diesel, gasoline and other fuels, the hydrogen engine does not generate carbon dioxide, particulate matter, carbon monoxide, hydrocarbons and other greenhouse gases and pollutants in theory because it uses carbon-free hydrogen as fuel, and is a clean power system. However, the combustion of hydrogen is not as stable as that of diesel, gasoline and other fuels. When the combustion is insufficient or misfire occurs, the hydrogen engine will emit unburned hydrogen. Since the risk of deflagration of hydrogen exposed to air is extremely high, how to timely find abnormal conditions of hydrogen emission to avoid safety accidents has become a problem to be solved. SUMMARY

[0003] In view of the above problems, the present application provides a hydrogen leakage control method, device, electronic equipment and vehicle to achieve the purpose of improving the safety and reliability of the hydrogen engine. The specific scheme is as follows:

[0004] The first aspect of the present application provides a hydrogen leakage control method, comprising:

[0005] According to the temperature difference between the inlet and outlet of the oxidation type catalyst and the hydrogen supply amount of the hydrogen engine, the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the tail gas are determined;

[0006] According to the first hydrogen leakage amount and the second hydrogen leakage amount, the severity of hydrogen leakage is determined, and the running state of the hydrogen engine is adjusted based on the adjustment strategy corresponding to the severity.

[0007] In a possible implementation, before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the tail gas according to the temperature difference between the inlet and outlet of the oxidation type catalyst and the hydrogen supply amount of the hydrogen engine, the method further comprises:

[0008] Determine whether the temperature difference is greater than a leakage measurement value and whether a leakage control enabling condition is met;

[0009] 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 met, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the tail gas according to the temperature difference between the inlet and outlet of the oxidation type catalyst and the hydrogen supply amount of the hydrogen engine is no longer performed.

[0010] In a possible implementation, the leakage control enabling condition comprises one or more of the following:

[0011] The hydrogen supply amount is greater than a supply threshold, an oxidation catalyst inlet temperature is greater than a temperature threshold, and a duration that the hydrogen engine is in a target operating condition is greater than a duration threshold.

[0012] In a possible implementation, determining, according to a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine, a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in exhaust gas, comprises:

[0013] Determining, according to the temperature difference and the hydrogen supply amount, a conversion efficiency of the oxidation catalyst;

[0014] Determining, according to a theoretical heat value corresponding to the hydrogen supply amount and the conversion efficiency, the first hydrogen leakage amount and the second hydrogen leakage amount.

[0015] In a possible implementation, determining, according to the temperature difference and the hydrogen supply amount, the conversion efficiency of the oxidation catalyst, comprises:

[0016] Determining, according to the temperature difference and a heat calculation formula, an actual heat value of the oxidation catalyst;

[0017] Determining, according to a ratio of the theoretical heat value to the actual heat value, the conversion efficiency.

[0018] In a possible implementation, determining, according to the theoretical heat value corresponding to the hydrogen supply amount and the conversion efficiency, the first hydrogen leakage amount and the second hydrogen leakage amount, comprises:

[0019] Obtaining the first hydrogen leakage amount based on the theoretical heat value ÷ the conversion efficiency ÷ a hydrogen heat value;

[0020] Obtaining the second hydrogen leakage amount based on the theoretical heat value ÷ (1-the conversion efficiency) ÷ the hydrogen heat value.

[0021] In a possible implementation, determining, according to the first hydrogen leakage amount and the second hydrogen leakage amount, a severity of hydrogen leakage, and adjusting an operating state of the hydrogen engine based on an adjustment strategy corresponding to the severity, comprises:

[0022] If the first hydrogen leakage amount and the second hydrogen leakage amount are both within a leakage range, adjusting an operating parameter of the hydrogen engine on the premise that a safety boundary condition of the hydrogen engine is met;

[0023] If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds the maximum value of the leakage range, the hydrogen supply of the hydrogen engine is cut off.

[0024] The second aspect of the present application provides a hydrogen leakage control device, comprising:

[0025] 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 tail gas according to a temperature difference between the inlet and the outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; and

[0026] a running state adjustment module, configured to determine a severity of the hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjust a running state of the hydrogen engine based on an adjustment strategy corresponding to the severity.

[0027] The third aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0028] the memory is configured to store a computer program;

[0029] the processor is configured 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.

[0030] The fourth aspect of the present application provides a vehicle, comprising the electronic device of the third aspect.

[0031] The fifth aspect of the present application provides a computer program product, comprising computer readable instructions, when the computer readable instructions run on an electronic device, so that the electronic device implements the hydrogen leakage control method of the first aspect or any implementation manner of the first aspect.

[0032] The sixth aspect of the present application provides a computer storage medium, 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 the hydrogen leakage control method of the first aspect or any implementation manner of the first aspect.

[0033] 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

[0034] 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.

[0035] Figure 1 A flow chart of a hydrogen leakage control method provided in this application;

[0036] Figure 2 A structural diagram of the post-processing system provided for this application;

[0037] Figure 3 Another flow chart of a hydrogen leakage control method provided in this application;

[0038] Figure 4 A structural diagram of a hydrogen leakage control device provided in this application;

[0039] Figure 5 This is an architectural diagram of an electronic device provided in this application. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] In another embodiment, to further ensure the accuracy and reliability of the hydrogen leakage detection, before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine, the following process is further included:

[0056] Determine whether the temperature difference is greater than the leakage measurement value and whether the leakage control enabling condition is met.

[0057] 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 met, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine is not performed.

[0058] Specifically, the leakage control enabling condition can include one or more of the hydrogen supply amount being greater than a supply threshold, the oxidation catalyst inlet temperature being greater than a temperature threshold, and the duration of the hydrogen engine being in a target operating condition being greater than a duration threshold.

[0059] For example, when the hydrogen supply amount of the hydrogen engine is greater than 500 kg / h, the oxidation catalyst inlet temperature is greater than 150°C, and the duration of the engine being in a stable operating condition is not less than 5s, it can be determined that the leakage control enabling condition is met, and the subsequent hydrogen leakage detection process can be performed. The stable operating condition can be characterized by the speed variation rate, torque variation rate, etc. of the hydrogen engine, for example, when the speed variation rate is less than 500 rpm / s or the torque variation rate is less than 300 Nm / s, it can be determined as a stable operating condition.

[0060] Further, to ensure the accuracy of the hydrogen leakage condition detection, the temperature difference between the two ends of the DOC needs to be limited, for example, when the temperature difference is not less than 30°C, the hydrogen leakage condition detection is performed, and more accurate and reliable results will be obtained.

[0061] It can be understood that the execution order of whether the 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.

[0062] In some embodiments, the determination of the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine can specifically include:

[0063] Step 11, determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply amount.

[0064] Step 12, according to the theoretical heat value corresponding to the hydrogen supply amount and the conversion efficiency, determine the first hydrogen leakage and the second hydrogen leakage.

[0065] Specifically, based on the temperature difference value, the actual heat value of the oxidation catalyst can be determined according to the heat calculation formula. Then, according to the ratio of the theoretical heat value and the actual heat value, the conversion efficiency is determined.

[0066] Wherein, the actual heat value can be obtained according to the heat calculation formula: Q=CMT, wherein C represents the specific heat capacity of exhaust gas, M represents the hydrogen amount, and T represents the temperature change, i.e. the temperature difference (temperature before and after DOC). Wherein, under the condition that M and C are known, the actual heat value can be obtained according to the temperature difference. The theoretical heat value can be obtained according to the pre-calibration that under the condition of a certain hydrogen amount, a certain theoretical heat value will be corresponded, and then the conversion efficiency = theoretical heat value ÷ actual heat value is obtained.

[0067] In other embodiments, in order to improve the safety and reliability of the hydrogen engine operation, the above step 102, according to the first hydrogen leakage and the second hydrogen leakage, determines the severity of the hydrogen leakage, and adjusts the operation state of the hydrogen engine based on the adjustment strategy corresponding to the severity, which can specifically include:

[0068] If the first hydrogen leakage and the second hydrogen leakage are within the leakage range, the operation parameters of the hydrogen engine are adjusted under the premise of meeting the safety boundary conditions of the hydrogen engine.

[0069] If the first hydrogen leakage and / or the second hydrogen leakage exceeds the maximum value of the leakage range, the hydrogen supply of the hydrogen engine is cut off.

[0070] Specifically, when the first hydrogen leakage and the second hydrogen leakage are between 1% and 4%, the hydrogen leakage can be reduced by reducing the excess air coefficient, EGR rate and other parameters under the premise of meeting the safety boundary conditions of the hydrogen engine (such as no knock of the hydrogen engine). Wherein the excess air coefficient refers to the ratio of the actual air amount supplied for fuel combustion to the theoretical air amount, which can be optimized by adjusting the hydrogen nozzle angle, the mixing ratio of fuel and air, etc., to reduce the additional air demand caused by incomplete combustion, thereby reducing the excess air coefficient. The EGR rate is the ratio of the recirculated exhaust gas amount to the total intake amount of the cylinder, which can be reduced by controlling the opening degree of the EGR valve.

[0071] When any of the above hydrogen leakage exceeds 4%, there is a high risk of explosion, so the hydrogen supply of the hydrogen engine can be cut off, and the user can be prompted to shut down.

[0072] In consideration of the risk of explosion caused by the heating of the nitrogen oxygen sensor in the case of excessive hydrogen leakage, the combustion parameter adjustment function can be started, which can be used for pre-intervention before misfire diagnosis. When the hydrogen leakage of the tail exhaust is greater than a certain value, the protection function is started, and torque limitation or hydrogen injection intervention is performed to protect the reliability and safety of the engine and the aftertreatment.

[0073] As a specific application of the above hydrogen leakage control method, referring to Figure 3 , the following processing process can be specifically included:

[0074] After the hydrogen engine starts to operate, it is first determined whether the hydrogen engine meets the leakage control enabling condition. On the premise that the leakage control enabling condition is met, it is determined whether the temperature difference is greater than the leakage measurement value. On the premise that the temperature difference is greater than the leakage measurement value, the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the tail gas are determined according to the temperature difference between the inlet and outlet of the oxidation type catalyst and the hydrogen supply amount of the hydrogen engine.

[0075] If the first hydrogen leakage amount and the second hydrogen leakage amount are within the leakage range, the operating parameters of the hydrogen engine are adjusted on the premise that the safety boundary condition of the hydrogen engine is met.

[0076] If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds the maximum value of the leakage range, the hydrogen supply of the hydrogen engine is cut off.

[0077] The above introduces a hydrogen leakage control method provided by the embodiments of the present application. The device for executing the above hydrogen leakage control method will be introduced below.

[0078] Please refer to Figure 4 , Figure 4 is a structure diagram of a hydrogen leakage control device provided by the embodiments of the present application. As shown in Figure 4 , the hydrogen leakage control device comprises:

[0079] The hydrogen leakage judgment module 401 is configured to determine the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the tail gas according to the temperature difference between the inlet and outlet of the oxidation type catalyst and the hydrogen supply amount of the hydrogen engine. In addition,

[0080] 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 the adjustment strategy corresponding to the severity.

[0081] In a possible implementation, the hydrogen leakage control apparatus further includes a detection enabling module configured to determine, before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine:

[0082] determine whether the temperature difference is greater than the leakage measurement value and whether the leakage control enabling condition is met;

[0083] 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 met, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine is not performed.

[0084] In a possible implementation, the leakage control enabling condition in the detection enabling module includes one or more of:

[0085] the hydrogen supply amount is greater than a supply threshold, the oxidation catalyst inlet temperature is greater than a temperature threshold, and the hydrogen engine is in a target operating condition for a duration greater than a duration threshold.

[0086] In a possible implementation, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine by the hydrogen leakage judgment module 401 includes:

[0087] determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply amount;

[0088] determining the first hydrogen leakage amount and the second hydrogen leakage amount according to the theoretical heat value corresponding to the hydrogen supply amount and the conversion efficiency.

[0089] In a possible implementation, the process of determining the conversion efficiency of the oxidation catalyst according to the temperature difference and the hydrogen supply amount by the hydrogen leakage judgment module 401 includes:

[0090] determining an actual heat value of the oxidation catalyst according to the temperature difference and a heat calculation formula;

[0091] determining the conversion efficiency according to a ratio of the theoretical heat value to the actual heat value.

[0092] In a possible implementation, the process of determining the first hydrogen leakage amount and the second hydrogen leakage amount according to the theoretical heat value corresponding to the hydrogen supply amount and the conversion efficiency by the hydrogen leakage judgment module 401 includes:

[0093] The first hydrogen leakage amount is obtained based on theoretical heat value ÷ conversion efficiency ÷ hydrogen heat value;

[0094] The second hydrogen leakage amount is obtained based on theoretical heat value ÷ (1-conversion efficiency) ÷ hydrogen heat value.

[0095] In a possible implementation, the running state adjustment module 402 determines the severity of hydrogen leakage according to the first hydrogen leakage amount and the second hydrogen leakage amount, and adjusts the running state of the hydrogen engine based on the adjustment strategy corresponding to the severity. The process includes:

[0096] If the first hydrogen leakage amount and the second hydrogen leakage amount are both within the leakage range, the running parameters of the hydrogen engine are adjusted on the premise that the safety boundary condition of the hydrogen engine is met.

[0097] If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds the maximum value of the leakage range, the hydrogen supply of the hydrogen engine is cut off.

[0098] The embodiment of the present application also provides an electronic device. Referring to Figure 5 The electronic device in the embodiment of the present application can include but is not limited to an ECU (Electronic Control Unit), a VCU (Vehicle Control Unit), an MCU (Micro Controller Unit), an HCU (Hybrid Control Unit), etc. Figure 5 The electronic device shown is only an example, and should not bring any limitation to the function and use range of the embodiment of the present application.

[0099] Referring to Figure 5 The electronic device includes at least one processor 501 and a memory 502 connected with the processor 501, wherein the memory is used to store a computer program, and the processor 501 is used to execute the computer program, so that the electronic device can implement the hydrogen leakage control method as described in the above embodiment.

[0100] The embodiment of the present application also provides a computer program product including computer readable instructions, which, when running on an electronic device, enable the electronic device to implement any one of the hydrogen leakage control methods provided in the embodiments of the present application.

[0101] The embodiment of the present application further provides a computer readable storage medium, 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 realize any hydrogen leakage control method provided by the embodiment of the present application.

[0102] The embodiment of the present application further provides a vehicle comprising the electronic device described in the above embodiment.

[0103] In addition, it should be noted that the above-described device embodiments are only schematic, and 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, i.e., they may be located in one place, or distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. In addition, the connection between the modules in the device embodiment provided by the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0104] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be realized by means of software and necessary general hardware, and of course can also be realized by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. Generally, functions completed by computer programs can be easily realized by corresponding hardware, and the specific hardware structure for realizing the same function can also be various, such as analog circuit, digital circuit or special circuit, etc. However, for the present application, software program implementation is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of software product, which is stored in a readable storage medium, such as a computer floppy disk, U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., including a plurality of instructions to make a computer device (which can be a personal computer, training device, or network device, etc.) execute the methods described in various embodiments of the present application.

[0105] In the above embodiments, all or part can be realized by software, hardware, firmware or any combination thereof. When realized by software, it can be realized in the form of computer program product in whole or in part.

[0106] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are 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 one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be stored by the computer or a data storage device such as a training device, a data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

Claims

1. A hydrogen gas leakage control method characterized by, The method comprises the following steps: determining a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas according to a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; if the first hydrogen leakage amount and the second hydrogen leakage amount are within a leakage range, adjusting an operating parameter of the hydrogen engine under the premise of meeting a safety boundary condition of the hydrogen engine; if the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, cutting off the hydrogen supply of the hydrogen engine; wherein the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine comprises: determining an actual heat value of the oxidation catalyst according to the temperature difference and a heat calculation formula; determining a conversion efficiency of the oxidation catalyst according to a ratio of a theoretical heat value corresponding to the hydrogen supply amount to the actual heat value; obtaining the first hydrogen leakage amount based on the theoretical heat value ÷ the conversion efficiency ÷ a hydrogen heat value; obtaining the second hydrogen leakage amount based on the theoretical heat value ÷ (1-the conversion efficiency) ÷ the hydrogen heat value.

2. The hydrogen gas leakage control method according to claim 1, characterized by, Before determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to 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 comprises: determining whether the temperature difference is greater than a leakage measurement value and whether a leakage control enabling condition is met; if the temperature difference is not greater than the leakage measurement value and / or the leakage control enabling condition is not met, the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine is not executed.

3. The hydrogen gas leakage control method according to claim 2, characterized by, The leakage control enabling condition comprises: one or more of the hydrogen supply amount being greater than a supply threshold, the oxidation catalyst inlet temperature being greater than a temperature threshold, and a duration for which the hydrogen engine is in a target operating condition being greater than a duration threshold.

4. A hydrogen gas leakage control device characterized by comprising: The method comprises the following steps: a hydrogen leakage judgment module is configured to determine a first hydrogen leakage amount in the hydrogen engine and a second hydrogen leakage amount in the exhaust gas according to a temperature difference between an inlet and an outlet of the oxidation catalyst and a hydrogen supply amount of the hydrogen engine; wherein the process of determining the first hydrogen leakage amount in the hydrogen engine and the second hydrogen leakage amount in the exhaust gas according to the temperature difference between the inlet and the outlet of the oxidation catalyst and the hydrogen supply amount of the hydrogen engine comprises: determining an actual heat value of the oxidation catalyst according to the temperature difference and a heat calculation formula; According to a ratio of a theoretical heat value corresponding to the hydrogen supply amount and the actual heat value, a conversion efficiency of the oxidation catalyst is determined; based on the theoretical heat value ÷ the conversion efficiency ÷ hydrogen heat value, the first hydrogen leakage amount is obtained; based on the theoretical heat value ÷ (1-the conversion efficiency) ÷ hydrogen heat value, the second hydrogen leakage amount is obtained; And, The running state adjustment module is configured to, if the first hydrogen leakage amount and the second hydrogen leakage amount are both within the leakage range, adjust a running parameter of the hydrogen engine under the premise of meeting a safety boundary condition of the hydrogen engine; If the first hydrogen leakage amount and / or the second hydrogen leakage amount exceeds a maximum value of the leakage range, the hydrogen supply of the hydrogen engine is cut off.

5. An electronic device, comprising: The electronic device comprises at least one processor and a memory connected with the processor, wherein: The memory is configured to store a computer program; The processor is configured to execute the computer program, so that the electronic device can implement the hydrogen leakage control method according to any one of claims 1 to 3.

6. A vehicle characterized by comprising: The electronic device comprises: The electronic device according to claim 5.

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