Methods and apparatus for detecting hydrogen leakage in fuel cells, and computer-readable storage media

Abstract

This invention discloses a method and apparatus for detecting hydrogen leakage in fuel cells, as well as a computer-readable storage medium. The method includes: acquiring the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters; determining the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and auxiliary parameters; controlling the vehicle according to preset handling measures based on the hydrogen leakage risk level, and outputting alarm or prompt information to a client. This invention solves the technical problem of low accuracy in detecting hydrogen leakage in fuel cells.

Description

Technical Field

[0001] This invention relates to the field of intelligent vehicles, and more specifically, to a method and apparatus for detecting hydrogen leakage in a fuel cell, and a computer-readable storage medium. Background Technology

[0002] Currently, hydrogen energy, as a renewable and clean energy carrier, plays a vital role in sustainable development. Hydrogen energy boasts high energy density and long-term storage capabilities, making hydrogen power generation technology, represented by hydrogen fuel cells, a research hotspot in the field of energy storage and conversion in recent years. Hydrogen fuel cells can function as both a vehicle power system and an external power source, showing broad development prospects. However, due to the wide combustibility of hydrogen, leaks could lead to fires or even explosions, posing certain safety hazards.

[0003] Traditional methods for detecting hydrogen leaks in fuel cells rely on hydrogen concentration sensors to detect the hydrogen concentration around the fuel cell. This single method results in low accuracy in detecting hydrogen leaks in fuel cells.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method and apparatus for detecting hydrogen leakage in fuel cells, as well as a computer-readable storage medium, to at least solve the technical problem of low accuracy in detecting hydrogen leakage in fuel cells.

[0006] According to one aspect of the present invention, a method for detecting hydrogen leakage in a fuel cell is provided, comprising: acquiring the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters; determining the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and auxiliary parameters; controlling the vehicle according to preset handling measures based on the hydrogen leakage risk level, and outputting alarm information or prompt information to a client.

[0007] Optionally, the hydrogen leakage risk level of the fuel cell is determined based on hydrogen concentration and auxiliary parameters, including: determining the hydrogen leakage risk level based on hydrogen concentration in response to hydrogen concentration meeting preset conditions; and determining the hydrogen leakage risk level based on auxiliary parameters in response to hydrogen concentration not meeting preset conditions.

[0008] Optionally, the hydrogen concentration includes at least: a first hydrogen concentration, a second hydrogen concentration, and a third hydrogen concentration, wherein the first hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the center of the vehicle's roof, the second hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the geometric center of the hydrogen tank's projection relative to the vehicle's roof, and the third hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located in front of the hydrogen tank at the bottom of the vehicle; in response to the hydrogen concentration meeting preset conditions, a hydrogen leakage risk level is determined based on the hydrogen concentration, including: in response to the first hydrogen... If the hydrogen concentration is greater than or equal to a preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module compares the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2. The preset hydrogen alarm concentration is less than the preset hydrogen explosion concentration, and Level 2 is lower than Level 1. In response to the first hydrogen concentration being less than the preset hydrogen alarm concentration and the second hydrogen concentration being greater than or equal to the first preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined to be Level 3, where Level 3 is lower than Level 2.

[0009] Optionally, the auxiliary parameters include: gas pressure and temperature parameters; in response to the hydrogen concentration not meeting the preset conditions, the hydrogen leakage risk level is determined based on the auxiliary parameters, including: in response to the first hydrogen concentration being less than the preset hydrogen alarm concentration and the third hydrogen concentration being greater than or equal to the second preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined based on the gas pressure and temperature parameters; in response to the first hydrogen concentration being less than the preset hydrogen alarm concentration, the second hydrogen concentration being less than the first preset hydrogen diffusion alarm value, and the third hydrogen concentration being less than the second preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined based on the temperature parameter.

[0010] Optionally, in response to a first hydrogen concentration being greater than or equal to a preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module compares the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2. This includes: determining the hydrogen leakage risk level as Level 1 in response to a first hydrogen concentration being greater than the preset hydrogen alarm concentration and also greater than the preset hydrogen explosion concentration; and determining the hydrogen leakage risk level as Level 2 in response to a first hydrogen concentration being greater than the preset hydrogen alarm concentration and less than the preset hydrogen explosion concentration.

[0011] Optionally, the temperature parameters include: a first pipe temperature and a second pipe temperature, where the first pipe temperature and the second pipe temperature are the temperatures at different locations inside the hydrogen pipeline; determining the hydrogen leakage risk level based on the gas pressure and temperature parameters includes: fusing the first pipe temperature and gas pressure to obtain a first pressure correction value, and simultaneously fusing the second pipe temperature and gas pressure to obtain a second pressure correction value; comparing the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value to determine the hydrogen leakage risk level of the fuel cell.

[0012] Optionally, the hydrogen leakage risk level of the fuel cell is determined by comparing the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value, including: determining the hydrogen leakage risk level as level three in response to the first pressure correction value being greater than or equal to the preset pressure deviation limit value, or the second pressure correction value being greater than or equal to the preset pressure deviation limit value; and determining the hydrogen leakage risk level as level three in response to the first pressure correction value being less than the preset pressure deviation limit value and the second pressure correction value being less than the preset pressure deviation limit value.

[0013] Optionally, the temperature parameters include: the temperature of the first gas tank and the temperature of the second gas tank, where the first and second gas tank temperatures are the temperatures of the left and right side walls of the hydrogen gas tank; determining the hydrogen leakage risk level based on the temperature parameters includes: obtaining the difference between the temperature of the first gas tank and the temperature of the second gas tank to obtain the gas tank temperature difference; determining whether the gas tank temperature difference is greater than or equal to a preset temperature deviation limit; and in response to the gas tank temperature difference being greater than or equal to the preset temperature deviation limit, determining the hydrogen leakage risk level as level four, wherein level four is lower than level three.

[0014] According to another aspect of the present invention, a detection device for hydrogen leakage in a fuel cell is also provided, comprising: an acquisition module for acquiring hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters; a determination module for determining the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and auxiliary parameters; and a control module for controlling the vehicle according to preset handling measures based on the hydrogen leakage risk level, and outputting alarm information or prompt information to a client.

[0015] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the execution of the fuel cell hydrogen leakage detection method of any one of the above embodiments in the processor of the device.

[0016] According to another aspect of the present invention, an electronic device is also provided, comprising: one or more processors; a storage device for storing one or more programs; and, when the one or more programs are executed by the one or more processors, causing the one or more processors to perform the fuel cell hydrogen leakage detection method of any of the above embodiments.

[0017] In this embodiment of the invention, the hydrogen concentration and auxiliary parameters of the fuel cell are obtained. These auxiliary parameters include at least one of the following: gas pressure and temperature. Based on the hydrogen concentration and auxiliary parameters, the hydrogen leakage risk level of the fuel cell is determined. Based on the hydrogen leakage risk level, the vehicle is controlled according to preset handling measures, and alarm or prompt information is output to the client. It is important to note that determining the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and auxiliary parameters allows for further confirmation of hydrogen leakage even when the hydrogen concentration is low and it is impossible to determine whether a hydrogen leak has occurred. This improves the accuracy of hydrogen leakage detection and achieves the technical effect of determining whether a hydrogen leak has occurred from multiple perspectives, thereby solving the technical problem of low accuracy in fuel cell hydrogen leakage detection. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a flowchart of a method for detecting hydrogen leakage in a fuel cell according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of an optional sensor layout according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of an optional hydrogen leak alarm system according to an embodiment of the present invention;

[0022] Figure 4 This is a flowchart of an optional fuel cell hydrogen leak detection method according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of a fuel cell hydrogen leakage detection device according to an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] Example 1

[0027] According to an embodiment of the present invention, an embodiment of a method for detecting hydrogen leakage in a fuel cell is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0028] Figure 1 This is a method for detecting hydrogen leakage in a fuel cell according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0029] Step S102: Obtain the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters.

[0030] The aforementioned fuel cell can be a device that uses clean energy as fuel to react with oxygen to generate electricity, and can be, but is not limited to, a hydrogen fuel cell.

[0031] The hydrogen concentration mentioned above can be the hydrogen concentration outside the fuel cell, or the hydrogen concentration outside the pipes and tanks inside the fuel cell where hydrogen is stored. The hydrogen concentration can be obtained in real time by hydrogen concentration sensors at different locations.

[0032] The aforementioned auxiliary parameters can be used to determine whether a hydrogen leak has occurred in the fuel cell. Gas pressure can be the internal gas pressure of the pipeline storing hydrogen. Temperature parameters can be used to determine the temperature around the hydrogen storage pipeline and tank.

[0033] In one alternative embodiment, hydrogen concentration sensors, temperature sensors, and pressure sensors are installed around the fuel cell, depending on the specific circumstances or needs, and relevant data of the fuel cell are collected in real time using the hydrogen concentration sensors, temperature sensors, and pressure sensors.

[0034] Step S104: Determine the hydrogen leakage risk level of the fuel cell based on hydrogen concentration and auxiliary parameters.

[0035] The aforementioned hydrogen leak risk levels can be, but are not limited to, Level 1, Level 2, Level 3, and Level 4, with the hazard level decreasing progressively from Level 1 to Level 4.

[0036] In one optional embodiment, if the hydrogen concentration sensor detects a high hydrogen concentration, it indicates that a hydrogen leak has occurred in the fuel cell, and the vehicle may be at risk of catching fire or exploding at any time. In this case, the hydrogen leak risk level is determined to be high, such as Level 1 or Level 2. If the hydrogen concentration sensor detects a low hydrogen concentration, it is impossible to determine whether a hydrogen leak is possible. Further auxiliary parameters are needed to determine whether a hydrogen leak has occurred. The hydrogen leak risk level of the fuel cell is then determined based on the auxiliary parameters. In this case, the hydrogen leak risk level is low, such as Level 3 or Level 4.

[0037] In another optional embodiment, if the hydrogen concentration sensor detects a hydrogen concentration, it indicates that a hydrogen leak has occurred in the fuel cell. The hydrogen leak risk level of the fuel cell is determined based on the hydrogen concentration. In this case, the hydrogen leak risk level is relatively high. For example, if the hydrogen concentration is greater than or equal to a preset threshold, the hydrogen leak risk level is determined to be Level 1; if the hydrogen concentration is less than the preset threshold, the hydrogen leak risk level is determined to be Level 2. If the hydrogen concentration sensor does not detect a hydrogen concentration, but the temperature sensor obtains a high temperature parameter, and / or the pressure sensor obtains a high pressure parameter, it indicates that the fuel cell may leak hydrogen at any time. The hydrogen leak risk is determined based on the temperature and pressure parameters, and can be comprehensively assessed by combining the temperature and pressure parameters with the fuel cell status.

[0038] Step S106: Based on the hydrogen leak risk level, control the vehicle according to the preset handling measures, and output alarm information or prompt information to the client.

[0039] The aforementioned pre-defined treatment measures can be measures determined in advance based on the risk level of hydrogen leakage.

[0040] The alarm information mentioned above can be an emergency request for help sent to relevant departments or personnel.

[0041] The above-mentioned notification message may be a text message reminding people related to the vehicle to be aware of the possibility of a vehicle malfunction and to take measures to inspect and repair the vehicle in the near future.

[0042] The aforementioned clients can be clients related to the current vehicle, including but not limited to: the driver, the driver's relatives, the vehicle supplier, and related technical personnel.

[0043] In one optional embodiment, different preset handling measures are implemented depending on the hydrogen leakage risk level. If the hydrogen leakage risk level is high, it indicates that the fuel cell has already experienced a hydrogen leak, posing a risk of fire or explosion at any time. Emergency evacuation is required, and an alarm message is sent to relevant departments, along with a reminder message to the driver, instructing them to brake immediately, quickly move away from the vehicle, await rescue, and simultaneously open the vehicle's ventilation vents to reduce the hydrogen concentration and disconnect electrical equipment inside the vehicle. If the hydrogen leakage risk level is low, a notification message is sent to the client, prompting the user to have the vehicle inspected promptly.

[0044] For example, if the hydrogen leak risk level is Level 1, the vehicle controller will open all ventilation openings in the passenger compartment, shut off all electrical equipment, activate the exhaust system, and control the vehicle's voice system and lights to alert the driver and surrounding passengers to move away from the vehicle. Simultaneously, it will send an alarm to relevant departments and personnel to await rescue. If the hydrogen leak risk level is Level 2, the vehicle controller will open all ventilation openings in the passenger compartment, shut off all electrical equipment, and alert the driver and passengers to apply emergency braking and move away from the vehicle via SMS or by displaying a fuel cell malfunction message on the central control screen. It will also send an alarm to relevant technicians to investigate the cause of the hydrogen leak. If the hydrogen leak risk level is Level 3, the vehicle controller will open some ventilation openings in the passenger compartment, send a warning message to the client indicating a possible hydrogen tank leak, and push notifications to nearby repair shops. It may also alert relevant departments to send technicians to investigate the vehicle. If the hydrogen leak risk level is Level 4, the vehicle's side vents will be opened, and a notification message will be sent to the client, reminding the user to have the vehicle inspected at a repair shop soon.

[0045] It is important to note that since there is still a possibility of hydrogen leakage at Level 3, vigilance is necessary to avoid danger. The location of the hydrogen anomaly can be determined using auxiliary parameters. Based on the location of the anomaly, the corresponding vehicle ventilation openings should be opened to prevent excessive hydrogen concentration and potential hazards. For example, if it is determined that the hydrogen pipeline is not stabilizing and there is a risk of leakage, the lower side ventilation openings of the vehicle can be opened, and the corresponding pressure relief valve can be locked. If it is determined that the hydrogen pipeline is functioning properly and there is no leakage, but there is a risk of leakage below the hydrogen tank, the lower interior side ventilation openings of the vehicle should be opened.

[0046] Through the above steps, the hydrogen concentration and auxiliary parameters of the fuel cell can be obtained. These auxiliary parameters include at least one of the following: gas pressure and temperature. Based on the hydrogen concentration and auxiliary parameters, the hydrogen leakage risk level of the fuel cell is determined. Based on the hydrogen leakage risk level, the vehicle is controlled according to preset handling measures, and alarm or prompt information is output to the client. It is important to note that determining the hydrogen leakage risk level of the fuel cell based on hydrogen concentration and auxiliary parameters allows for further confirmation of hydrogen leakage even when the hydrogen concentration is low and it is impossible to determine whether a leak has occurred. This improves the accuracy of hydrogen leakage detection, achieving the technical effect of determining whether a hydrogen leak has occurred from multiple perspectives, thereby solving the technical problem of low accuracy in fuel cell hydrogen leakage detection.

[0047] It should be noted that, since the interior of the carriages mostly adopts an arched ceiling design, hydrogen concentration sensors can be installed in different locations based on the diffusion characteristics of hydrogen in a confined space. Figure 2 This is a schematic diagram of an optional sensor layout according to an embodiment of the present invention, such as... Figure 2 As shown, hydrogen concentration sensor 1 (for obtaining the first hydrogen concentration) is located at the center of the vehicle's interior ceiling, hydrogen concentration sensor 2 (for obtaining the second hydrogen concentration) is located at the geometric center of the hydrogen tank 4 relative to the vehicle's interior ceiling projection, and hydrogen concentration sensor 3 (for obtaining the third hydrogen concentration) is located at the bottom of the vehicle, in front of the hydrogen tank 4 (on the fuel cell 5). The hydrogen tank 4 is located behind the fuel cell 5. Since the hydrogen concentration at the center of the vehicle's interior ceiling increases with the duration of hydrogen leakage, using the first hydrogen concentration at the center of the vehicle's interior ceiling as the preset condition is more accurate. Temperature sensors 6 (TS1) and 7 (TS2) are installed on the left and right sides of the hydrogen tank to collect the temperature around the hydrogen tank.

[0048] in addition, Figure 3 This is a schematic diagram of an optional hydrogen leak alarm system according to an embodiment of the present invention, as shown below. Figure 3As shown, the hydrogen leak alarm system includes a hydrogen concentration acquisition module 21, a tank temperature acquisition module 22, a gas pressure acquisition module 23, a pipeline temperature acquisition module 24, an in-vehicle hydrogen concentration detection module 25, a hydrogen tank leak auxiliary detection module 26, a hydrogen pipeline leak auxiliary detection module 27, a hydrogen leak risk level determination module 28, and a vehicle controller 29. The hydrogen concentration acquisition module 21 is connected to the in-vehicle hydrogen concentration detection module 25, the tank temperature acquisition module 22 is connected to the hydrogen tank leak auxiliary detection module 26, and the gas pressure acquisition module 23 and the pipeline temperature acquisition module 24 are connected to the hydrogen pipeline leak auxiliary detection module 27. The hydrogen concentration acquisition module 21 acquires the first, second, and third hydrogen concentrations in real time and transmits them to the in-vehicle hydrogen concentration detection module 25. The in-vehicle hydrogen concentration detection module 25 then determines whether the hydrogen tank leak auxiliary detection module 26 and the hydrogen pipeline leak auxiliary detection module 27 are needed for assistance. The in-vehicle hydrogen concentration detection module 25 judges the hydrogen concentration and generates a hydrogen concentration judgment result. The hydrogen tank leakage auxiliary detection module 26 judges the auxiliary parameters related to the hydrogen tank and generates a hydrogen tank leakage result. The hydrogen pipeline leakage auxiliary detection module 27 judges the auxiliary parameters related to the hydrogen pipeline and generates a hydrogen pipeline leakage result. The in-vehicle hydrogen concentration detection module 25, the hydrogen tank leakage auxiliary detection module 26, and the hydrogen pipeline leakage auxiliary detection module 27 are connected to the hydrogen leakage risk level determination module 28. The hydrogen leakage risk level determination module 28 determines the hydrogen leakage risk level based on the hydrogen tank leakage result, the hydrogen pipeline leakage result, and the hydrogen tank leakage result, and sends the hydrogen leakage risk level to the vehicle controller 29. The vehicle controller 29 controls the vehicle according to the preset handling measures based on the hydrogen leakage risk level and outputs alarm information or prompt information to the client.

[0049] Optionally, the hydrogen leakage risk level of the fuel cell is determined based on hydrogen concentration and auxiliary parameters, including: determining the hydrogen leakage risk level based on hydrogen concentration in response to hydrogen concentration meeting preset conditions; and determining the hydrogen leakage risk level based on auxiliary parameters in response to hydrogen concentration not meeting preset conditions.

[0050] The aforementioned preset conditions can be pre-set according to specific circumstances to determine whether the hydrogen concentration is high.

[0051] In one optional embodiment, if a certain concentration of hydrogen is detected inside the vehicle, meaning the hydrogen concentration meets a preset condition, it indicates that a hydrogen leak has occurred in the fuel cell, and the hydrogen leak risk level can be directly determined based on the hydrogen concentration. If the hydrogen concentration detected inside the vehicle is low, it cannot be determined whether a hydrogen leak has occurred, meaning the hydrogen concentration does not meet the preset condition. In this case, auxiliary parameters are needed to further determine whether a hydrogen leak has occurred, and the hydrogen leak risk level is determined based on these auxiliary parameters. This multi-faceted approach to confirming whether a hydrogen leak has occurred in the fuel cell improves the accuracy of hydrogen leak detection and avoids situations where a low hydrogen concentration fails to detect a leak in time, thus preventing potential safety hazards.

[0052] Optionally, the hydrogen concentration includes at least: a first hydrogen concentration, a second hydrogen concentration, and a third hydrogen concentration, wherein the first hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the center of the vehicle's roof, the second hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the geometric center of the hydrogen tank's projection relative to the vehicle's roof, and the third hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located in front of the hydrogen tank at the bottom of the vehicle; in response to the hydrogen concentration meeting preset conditions, a hydrogen leakage risk level is determined based on the hydrogen concentration, including: in response to the first hydrogen... If the hydrogen concentration is greater than or equal to a preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module compares the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2. The preset hydrogen alarm concentration is less than the preset hydrogen explosion concentration, and Level 2 is lower than Level 1. In response to the first hydrogen concentration being less than the preset hydrogen alarm concentration and the second hydrogen concentration being greater than or equal to the first preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined to be Level 3, where Level 3 is lower than Level 2.

[0053] The aforementioned preset hydrogen alarm concentration can be a concentration threshold that is set in advance according to specific circumstances to determine whether the hydrogen concentration is high.

[0054] The aforementioned preset hydrogen explosion concentration can be a concentration threshold set in advance according to specific circumstances to determine when the hydrogen concentration reaches the lower explosion limit.

[0055] The aforementioned first preset hydrogen diffusion alarm value can be a threshold set in advance according to specific circumstances to determine whether hydrogen is currently diffusing, and can be the lower alarm limit concentration corresponding to the hydrogen concentration at the geometric center of the top projection of the carriage.

[0056] In one optional embodiment, if the first hydrogen concentration is greater than or equal to a preset hydrogen alarm concentration, it indicates that the current hydrogen concentration inside the vehicle is high. It is necessary to further determine the relationship between the first hydrogen concentration and the preset hydrogen alarm concentration and preset hydrogen explosion concentration. Based on this relationship, the hydrogen leakage risk level of the fuel cell is determined. In this case, if the first hydrogen concentration is at least equal to the preset hydrogen alarm concentration, it indicates that the current hydrogen concentration inside the vehicle is high, and the danger level is high. Therefore, the current hydrogen leakage risk level is determined to be either Level 1 or Level 2. If the first hydrogen concentration is less than the preset hydrogen alarm concentration, it indicates that the current hydrogen concentration is low and within a safe range. Because the possibility of a hydrogen accident is low, it is necessary to further determine the hydrogen leakage risk level based on the second hydrogen concentration. If the second hydrogen concentration is greater than or equal to the first preset hydrogen diffusion alarm value, it indicates that the current hydrogen tank leak point is located at the top of the tank and is in the initial stage of leakage, posing a certain safety hazard. Therefore, when the first hydrogen concentration is less than the preset hydrogen alarm concentration and the second hydrogen concentration is greater than or equal to the first preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined to be Level 3.

[0057] Optionally, the auxiliary parameters include: gas pressure and temperature parameters; in response to the hydrogen concentration not meeting the preset conditions, the hydrogen leakage risk level is determined based on the auxiliary parameters, including: in response to the first hydrogen concentration being less than the preset hydrogen alarm concentration and the third hydrogen concentration being greater than or equal to the second preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined based on the gas pressure and temperature parameters; in response to the first hydrogen concentration being less than the preset hydrogen alarm concentration, the second hydrogen concentration being less than the first preset hydrogen diffusion alarm value, and the third hydrogen concentration being less than the second preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined based on the temperature parameter.

[0058] The aforementioned second preset hydrogen diffusion alarm value can be a threshold set in advance according to specific circumstances to determine whether hydrogen has diffused, or it can be the lower alarm limit concentration corresponding to the hydrogen concentration at the front of the hydrogen tank at the bottom of the vehicle compartment.

[0059] In one optional embodiment, if the hydrogen concentration is less than the preset hydrogen alarm concentration, it indicates that the current hydrogen concentration inside the vehicle compartment is within a safe range, but there may still be certain safety hazards. It is necessary to use auxiliary parameters to assess the leakage risk of the hydrogen tank and hydrogen pipeline, and determine the hydrogen leakage risk level based on gas pressure and temperature parameters. Specifically, if the first hydrogen concentration is less than the preset hydrogen alarm concentration, and the third hydrogen concentration is greater than or equal to the second preset hydrogen diffusion alarm value, it is determined that the hydrogen concentration below the hydrogen tank is at a high level. At this time, the hydrogen tank leak point is located in the hydrogen pipeline or at the bottom of the hydrogen tank and is in the initial stage of leakage. Therefore, it is necessary to further determine the hydrogen leakage risk level using gas pressure and temperature parameters. If the first hydrogen concentration is less than the preset hydrogen alarm concentration, and the second hydrogen concentration is less than the first preset hydrogen diffusion alarm value, and the third hydrogen concentration is less than the second preset hydrogen diffusion alarm value, it is determined that the hydrogen concentration above and below the hydrogen tank is at a normal level. At this time, the possibility of hydrogen leakage is investigated based on the temperature on both sides of the hydrogen tank, and the hydrogen leakage risk level is determined using temperature parameters.

[0060] Optionally, in response to a first hydrogen concentration being greater than or equal to a preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module compares the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2. This includes: determining the hydrogen leakage risk level as Level 1 in response to a first hydrogen concentration being greater than the preset hydrogen alarm concentration and also greater than the preset hydrogen explosion concentration; and determining the hydrogen leakage risk level as Level 2 in response to a first hydrogen concentration being greater than the preset hydrogen alarm concentration and less than the preset hydrogen explosion concentration.

[0061] In one optional embodiment, if the first hydrogen concentration is greater than a preset hydrogen alarm concentration and greater than a hydrogen explosion concentration, it indicates that the current hydrogen concentration is very high and an explosion may occur at any time, thus determining the hydrogen leakage risk level as Level 1. If the first hydrogen concentration is greater than a preset hydrogen concentration and less than a preset hydrogen explosion concentration, it indicates that the current hydrogen concentration is insufficient to cause an explosion, but the hydrogen concentration may increase over time, thus determining the hydrogen leakage risk level as Level 2.

[0062] Optionally, the temperature parameters include: a first pipe temperature and a second pipe temperature, where the first pipe temperature and the second pipe temperature are the temperatures at different locations inside the hydrogen pipeline; determining the hydrogen leakage risk level based on the gas pressure and temperature parameters includes: fusing the first pipe temperature and gas pressure to obtain a first pressure correction value, and simultaneously fusing the second pipe temperature and gas pressure to obtain a second pressure correction value; comparing the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value to determine the hydrogen leakage risk level of the fuel cell.

[0063] The first pipe temperature mentioned above can be the temperature detected inside the hydrogen pipe. The second pipe temperature can be the internal temperature of the hydrogen pipe at a different location than the first pipe temperature.

[0064] The aforementioned first pressure correction value can be the pressure correction value corresponding to the first pipe temperature.

[0065] The aforementioned second pressure correction value can be the pressure correction value corresponding to the second pipeline temperature.

[0066] The aforementioned preset pressure deviation limit can be a threshold value used to determine whether the hydrogen pipeline can be stabilized based on specific circumstances, and can be represented by R. ΔP express.

[0067] In one optional embodiment, since the initial leakage of the hydrogen pipeline manifests as an inability to stabilize the pressure, the presence of a hydrogen leak can be determined based on the temperature and gas pressure of the hydrogen pipeline, thus establishing the hydrogen leak risk level of the fuel cell. Specifically, a gas pressure sensor PS1 is installed inside the hydrogen pipeline to obtain a first gas pressure P1, a gas pressure sensor PS2 to obtain a second gas pressure P2, and a temperature sensor TS3 to obtain a first pipeline temperature T3 and a temperature sensor TS4 to obtain a second pipeline temperature T4. This allows for real-time acquisition of the gas pressure and temperature of the hydrogen pipeline, providing a more accurate understanding of the internal pressure changes. The first gas pressure can be the gas pressure in the pipeline after the first-stage pressure reducing valve, and the second gas pressure can be the gas pressure in the pipeline after the second-stage pressure reducing valve. The first gas pressure P1 and the first pipeline temperature T3 are then combined to obtain a first pressure correction value, which can be expressed as |P1 - P2|. set The second pressure P2 and the second pipe temperature T4 are combined to obtain the second pressure correction value, which can be expressed as |P2-P set Then, the first pressure correction value and the second pressure correction value are compared with the preset pressure deviation limit value. Based on the relationship between the first pressure correction value, the second pressure correction value and the preset pressure deviation limit value, the hydrogen leakage risk level of the fuel cell is determined.

[0068] Optionally, the hydrogen leakage risk level of the fuel cell is determined by comparing the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value, including: determining the hydrogen leakage risk level as level three in response to the first pressure correction value being greater than or equal to the preset pressure deviation limit value, or the second pressure correction value being greater than or equal to the preset pressure deviation limit value; and determining the hydrogen leakage risk level as level three in response to the first pressure correction value being less than the preset pressure deviation limit value and the second pressure correction value being less than the preset pressure deviation limit value.

[0069] In an alternative embodiment, if |P1-P set |≥R ΔP or |P2-P set |≥R ΔP The system determines that the hydrogen pipeline is not stabilizing and is leaking, classifying the hydrogen leak risk level as Level 3. Furthermore, based on sensor information, it can determine whether a leak exists in the pipeline after the primary or secondary pressure reducing valve, and the leak location can be sent to the client. If |P1-P set | <R ΔP And |P2-P set | <R ΔP It was determined that the hydrogen pipeline pressure stabilization function was good and there was no hydrogen leakage. However, since the third hydrogen concentration was greater than or equal to the second preset hydrogen diffusion alarm value, a hydrogen leakage was confirmed, and the hydrogen leakage risk level was determined to be level three.

[0070] Optionally, the temperature parameters include: the temperature of the first gas tank and the temperature of the second gas tank, where the first and second gas tank temperatures are the temperatures of the left and right side walls of the hydrogen gas tank; determining the hydrogen leakage risk level based on the temperature parameters includes: obtaining the difference between the temperature of the first gas tank and the temperature of the second gas tank to obtain the gas tank temperature difference; determining whether the gas tank temperature difference is greater than or equal to a preset temperature deviation limit; and in response to the gas tank temperature difference being greater than or equal to the preset temperature deviation limit, determining the hydrogen leakage risk level as level four, wherein level four is lower than level three.

[0071] The temperature difference between the gas tanks mentioned above can be the absolute value of the temperature difference between the first gas tank and the second gas tank.

[0072] The aforementioned preset temperature deviation limit can be a threshold value that is set in advance according to specific circumstances to determine whether the hydrogen cylinder contains hydrogen.

[0073] In one optional embodiment, since hydrogen accumulates on one side of the hydrogen tank in the early stages of a hydrogen leak, resulting in a large temperature difference between the left and right sides of the hydrogen tank, the presence of a hydrogen leak can be determined based on the temperatures on both sides of the hydrogen tank. Temperature sensors TS1 and TS2 are installed on the left and right sides of the hydrogen tank. Temperature sensor TS1 detects the temperature T1 of the first tank in real time, and temperature sensor TS2 detects the temperature T2 of the second tank in real time. The temperature difference between the first and second tanks is then determined, i.e., |T1-T2|. This temperature difference is compared with a preset temperature deviation limit. If the temperature difference is greater than or equal to the preset temperature deviation limit, it indicates that there may be a hydrogen leak in the hydrogen tank. At this time, the hydrogen concentration is not high enough to cause danger, but there is a certain safety hazard. The hydrogen leak risk level is determined to be Level 4.

[0074] Figure 4This is a flowchart of an optional fuel cell hydrogen leak detection method according to an embodiment of the present invention, such as... Figure 4 As shown, the steps of this method are as follows:

[0075] Step S401: Obtain the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the hydrogen concentration includes at least: a first hydrogen concentration, a second hydrogen concentration, and a third hydrogen concentration;

[0076] Step S402: Determine whether the first hydrogen concentration is greater than or equal to the preset hydrogen alarm concentration. If yes, proceed to step S403; otherwise, proceed to step S408.

[0077] Step S403: Determine whether the first hydrogen concentration is greater than or equal to the preset hydrogen explosion concentration. If yes, proceed to step S404; otherwise, proceed to step S406.

[0078] Step S404: Determine the hydrogen leak risk level as Level 1;

[0079] Step S405: Open all the air vents inside the vehicle, cut off all electrical equipment, start the exhaust system, and send an alarm message to the client.

[0080] Step S406: Determine the hydrogen leak risk level as Level 2;

[0081] Step S407: Open all the air vents inside the vehicle, cut off all electrical equipment, and send a prompt message to the client.

[0082] Step S408: Determine whether the second hydrogen concentration is greater than or equal to the first preset hydrogen diffusion alarm value and whether the third hydrogen concentration is greater than or equal to the second preset hydrogen diffusion alarm value. If yes, proceed to step S409; otherwise, proceed to step S414.

[0083] Step S409: Determine the hydrogen leak risk level as Level 3;

[0084] Step S410: Determine the first pressure correction value and the second pressure correction value based on the first pipeline temperature, the second management temperature and the gas pressure in the auxiliary parameters;

[0085] Step S411: Determine whether the first pressure correction value is greater than or equal to the preset pressure deviation limit value, or whether the second pressure correction value is greater than or equal to the preset pressure deviation limit value. If yes, proceed to step S412; otherwise, proceed to step S413.

[0086] Step S412: Lock the corresponding pressure relief valve, control the opening of the air vent on the lower side of the vehicle interior, and send a prompt message to the client.

[0087] Step S413: Control the lower air vents inside the vehicle to open and send a notification message to the client;

[0088] Step S414: Determine the hydrogen leak risk level as Level 4;

[0089] Step S415: Control the opening of the side ventilation vents inside the vehicle and send a notification message to the client.

[0090] Example 2

[0091] According to an embodiment of the present invention, a detection device for hydrogen leakage in a fuel cell is also provided. This device can perform the detection method for hydrogen leakage in a fuel cell as described in the above embodiments. The specific implementation and preferred application scenarios are the same as those in the above embodiments, and will not be repeated here.

[0092] Figure 5 This is a schematic diagram of a fuel cell hydrogen leakage detection device according to an embodiment of the present invention, as shown below. Figure 5 As shown, the device includes the following components: an acquisition module 50, a determination module 52, and a control module 54.

[0093] The acquisition module 50 is used to acquire the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters;

[0094] Module 52 is used to determine the hydrogen leakage risk level of the fuel cell based on hydrogen concentration and auxiliary parameters;

[0095] The control module 54 is used to control the vehicle according to preset handling measures based on the hydrogen leak risk level, and output alarm information or prompt information to the client.

[0096] Optionally, the determining module includes: a first determining unit, configured to determine the hydrogen leakage risk level based on the hydrogen concentration in response to the hydrogen concentration meeting a preset condition; and a second determining unit, configured to determine the hydrogen leakage risk level based on auxiliary parameters in response to the hydrogen concentration not meeting the preset condition.

[0097] Optionally, the first determining unit includes: a first determining subunit, configured to, in response to a first hydrogen concentration being greater than or equal to a preset hydrogen alarm concentration, compare the first hydrogen concentration with a preset hydrogen alarm concentration and a preset hydrogen explosion concentration using an in-vehicle hydrogen concentration detection module, and determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2, wherein the preset hydrogen alarm concentration is less than the preset hydrogen explosion concentration, and Level 2 is lower than Level 1; and a second determining subunit, configured to, in response to a first hydrogen concentration being less than the preset hydrogen alarm concentration and a second hydrogen concentration being greater than or equal to a first preset hydrogen diffusion alarm value, determine the hydrogen leakage risk level as Level 3, wherein Level 3 is lower than Level 2.

[0098] Optionally, the second determining unit includes: a third determining subunit, configured to determine a hydrogen leakage risk level based on gas pressure and temperature parameters in response to a first hydrogen concentration being less than a preset hydrogen alarm concentration and a third hydrogen concentration being greater than or equal to a second preset hydrogen diffusion alarm value; and a fourth determining subunit, configured to determine a hydrogen leakage risk level based on temperature parameters in response to a first hydrogen concentration being less than a preset hydrogen alarm concentration, a second hydrogen concentration being less than a first preset hydrogen diffusion alarm value, and a third hydrogen concentration being less than a second preset hydrogen diffusion alarm value.

[0099] Optionally, the first determining subunit is further configured to determine the hydrogen leakage risk level as a first level in response to the first hydrogen concentration being greater than a preset hydrogen alarm concentration and the first hydrogen concentration being greater than a preset hydrogen explosion concentration; and to determine the hydrogen leakage risk level as a second level in response to the first hydrogen concentration being greater than the preset hydrogen alarm concentration and the first hydrogen concentration being less than the preset hydrogen explosion concentration.

[0100] Optionally, the third determining subunit is further configured to integrate the temperature and gas pressure of the first pipeline to obtain a first pressure correction value, and simultaneously integrate the temperature and gas pressure of the second pipeline to obtain a second pressure correction value; and compare the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value to determine the hydrogen leakage risk level of the fuel cell.

[0101] Optionally, the third determining subunit is further configured to determine the hydrogen leakage risk level as Level 3 in response to the first pressure correction value being greater than or equal to a preset pressure deviation limit value, or the second pressure correction value being greater than or equal to a preset pressure deviation limit value; and to determine the hydrogen leakage risk level as Level 3 in response to the first pressure correction value being less than a preset pressure deviation limit value and the second pressure correction value being less than a preset pressure deviation limit value.

[0102] Optionally, the fourth determining subunit is further configured to obtain the temperature difference between the first gas tank and the second gas tank to obtain the gas tank temperature difference; determine whether the gas tank temperature difference is greater than or equal to a preset temperature deviation limit; and, in response to the gas tank temperature difference being greater than or equal to the preset temperature deviation limit, determine the hydrogen leakage risk level as level four, wherein level four is lower than level three.

[0103] Example 3

[0104] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the execution of the fuel cell hydrogen leakage detection method of any one of the above embodiments in the processor of the device.

[0105] Example 4

[0106] According to another aspect of the present invention, an electronic device is also provided, comprising: one or more processors; a storage device for storing one or more programs; and, when the one or more programs are executed by the one or more processors, causing the one or more processors to perform the fuel cell hydrogen leakage detection method of any of the above embodiments.

[0107] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0108] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0109] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0110] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0111] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0112] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0113] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for detecting hydrogen leakage in a fuel cell, characterized in that, include: The hydrogen concentration and auxiliary parameters of the fuel cell are obtained, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters, wherein the temperature parameters include: first pipe temperature and second pipe temperature, wherein the first pipe temperature and the second pipe temperature are the temperatures at different locations inside the hydrogen pipe; Based on the hydrogen concentration and the auxiliary parameters, the hydrogen leakage risk level of the fuel cell is determined, wherein the hydrogen concentration includes at least: a first hydrogen concentration, a second hydrogen concentration, and a third hydrogen concentration. The first hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the center of the top of the vehicle interior. The second hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the geometric center of the hydrogen tank's projection relative to the top of the vehicle interior. The third hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located in front of the hydrogen tank at the bottom of the vehicle interior. Based on the hydrogen leak risk level, the vehicle is controlled according to the preset handling measures, and alarm or prompt information is output to the client. The determination of the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and the auxiliary parameters includes: In response to the hydrogen concentration meeting a preset condition, the hydrogen leakage risk level is determined based on the hydrogen concentration; In response to the hydrogen concentration not meeting preset conditions, the hydrogen leakage risk level is determined based on the auxiliary parameters, including: in response to the first hydrogen concentration being less than a preset hydrogen alarm concentration and the third hydrogen concentration being greater than or equal to a second preset hydrogen diffusion alarm value, the first pipeline temperature and the gas pressure are combined to obtain a first pressure correction value, and the second pipeline temperature and the gas pressure are combined to obtain a second pressure correction value; the first pressure correction value and the second pressure correction value are compared with a preset pressure deviation limit value to determine the hydrogen leakage risk level; in response to the first pressure correction value being greater than or equal to the preset pressure deviation limit value, or the second pressure correction value being greater than or equal to the preset pressure deviation limit value, the hydrogen leakage risk level is determined to be a third level; in response to the first pressure correction value being less than the preset pressure deviation limit value and the second pressure correction value being less than the preset pressure deviation limit value, the hydrogen leakage risk level is determined to be the third level.

2. The method for detecting hydrogen leakage in a fuel cell according to claim 1, characterized in that, In response to the hydrogen concentration meeting a preset condition, the hydrogen leakage risk level is determined based on the hydrogen concentration, including: In response to the first hydrogen concentration being greater than or equal to a preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module is used to compare the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2, wherein the preset hydrogen alarm concentration is less than the preset hydrogen explosion concentration, and Level 2 is lower than Level 1. In response to the first hydrogen concentration being less than the preset hydrogen alarm concentration and the second hydrogen concentration being greater than or equal to the first preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined to be the third level, wherein the third level is lower than the second level.

3. The method for detecting hydrogen leakage in a fuel cell according to claim 2, characterized in that, The auxiliary parameters include: the gas pressure and the temperature parameters; in response to the hydrogen concentration not meeting the preset conditions, determining the hydrogen leakage risk level based on the auxiliary parameters further includes: In response to the first hydrogen concentration being less than the preset hydrogen alarm concentration, the second hydrogen concentration being less than the first preset hydrogen diffusion alarm value, and the third hydrogen concentration being less than the second preset hydrogen diffusion alarm value, the hydrogen leakage risk level is determined based on the temperature parameter.

4. The method for detecting hydrogen leakage in a fuel cell according to claim 2, characterized in that, In response to the first hydrogen concentration being greater than or equal to the preset hydrogen alarm concentration, the in-vehicle hydrogen concentration detection module compares the first hydrogen concentration with the preset hydrogen alarm concentration and the preset hydrogen explosion concentration to determine the hydrogen leakage risk level of the fuel cell as either Level 1 or Level 2, including: In response to the first hydrogen concentration being greater than the preset hydrogen alarm concentration and the first hydrogen concentration being greater than the preset hydrogen explosion concentration, the hydrogen leakage risk level is determined to be Level 1; In response to the first hydrogen concentration being greater than the preset hydrogen alarm concentration and the first hydrogen concentration being less than the preset hydrogen explosion concentration, the hydrogen leakage risk level is determined to be Level 2.

5. The method for detecting hydrogen leakage in a fuel cell according to claim 3, characterized in that, The temperature parameters include: the temperature of the first gas tank and the temperature of the second gas tank, wherein the temperature of the first gas tank and the temperature of the second gas tank are the temperatures of the left and right side walls of the hydrogen gas tank; Determining the hydrogen leak risk level based on the temperature parameter includes: The temperature difference between the first gas tank and the second gas tank is obtained to obtain the gas tank temperature difference; Determine whether the temperature difference of the gas tank is greater than or equal to the preset temperature deviation limit value; In response to the temperature difference of the gas tank being greater than or equal to the preset temperature deviation limit, the hydrogen leakage risk level is determined to be Level 4, wherein Level 4 is less than Level 3.

6. A detection device for hydrogen leakage in a fuel cell, characterized in that, include: The acquisition module is used to acquire the hydrogen concentration and auxiliary parameters of the fuel cell, wherein the auxiliary parameters include at least one of the following: gas pressure and temperature parameters, and the temperature parameters include: first pipe temperature and second pipe temperature, wherein the first pipe temperature and the second pipe temperature are the temperatures at different locations inside the hydrogen pipe; A determination module is used to determine the hydrogen leakage risk level of the fuel cell based on the hydrogen concentration and the auxiliary parameters, wherein the hydrogen concentration includes at least: a first hydrogen concentration, a second hydrogen concentration, and a third hydrogen concentration, wherein the first hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the center of the top of the vehicle, the second hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located at the geometric center of the hydrogen tank relative to the top of the vehicle, and the third hydrogen concentration is the hydrogen concentration obtained by a hydrogen concentration sensor located in front of the hydrogen tank at the bottom of the vehicle. The control module is used to control the vehicle according to preset handling measures based on the hydrogen leakage risk level, and output alarm information or prompt information to the client. The determining module is further configured to perform the following steps: in response to the hydrogen concentration meeting a preset condition, determining the hydrogen leakage risk level based on the hydrogen concentration; in response to the hydrogen concentration not meeting the preset condition, determining the hydrogen leakage risk level based on the auxiliary parameters, including: in response to the first hydrogen concentration being less than a preset hydrogen alarm concentration and the third hydrogen concentration being greater than or equal to a second preset hydrogen diffusion alarm value, fusing the first pipeline temperature and the gas pressure to obtain a first pressure correction value, and simultaneously fusing the second pipeline temperature and the gas pressure to obtain a second pressure correction value; comparing the first pressure correction value and the second pressure correction value with a preset pressure deviation limit value to determine the hydrogen leakage risk level; in response to the first pressure correction value being greater than or equal to the preset pressure deviation limit value, or the second pressure correction value being greater than or equal to the preset pressure deviation limit value, determining the hydrogen leakage risk level as a third level; in response to the first pressure correction value being less than the preset pressure deviation limit value and the second pressure correction value being less than the preset pressure deviation limit value, determining the hydrogen leakage risk level as the third level.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the execution of the fuel cell hydrogen leakage detection method according to any one of claims 1 to 5 in the processor of the device.

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