A hydrogen fuel cell vehicle collision detection method, system and vehicle

Abstract

The present invention relates to a collision detection method, system, and vehicle for a hydrogen fuel cell vehicle. The method includes real-time detection of the vehicle's acceleration value and hydrogen concentration value, recording the duration of the acceleration value exceeding a set acceleration threshold, sensing the impact force during a collision, comparing the impact force with the impact force threshold, and determining that the vehicle has a fault if the impact force is greater than or equal to the impact force threshold; if the impact force is less than the impact force threshold, comparing the acceleration value with the set acceleration threshold; if the acceleration value is greater than or equal to the set acceleration threshold, determining the vehicle's fault level based on the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold; and if the acceleration value is less than the set acceleration threshold, determining that the vehicle has no fault. In this invention, the accuracy of collision detection results can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen fuel cell vehicles, and in particular relates to a collision detection method, system and vehicle for a hydrogen fuel cell vehicle. Background Art

[0002] With the promotion of fuel cells, the application of fuel cells in vehicles has gradually received attention, especially hydrogen fuel cells among fuel cells. Due to the flammable and explosive properties of hydrogen, the hydrogen environment also puts forward requirements for collision protection. For example, GB26990 "Technical Conditions for Onboard Hydrogen Systems of Fuel Cell Electric Vehicles" 4.2.9 requires that "when the vehicle collides, the main shut-off valve should be immediately (automatically) closed according to the designed collision level to cut off the fuel supply to the pipeline." For example, as an operating vehicle, the average speed of trucks during operation is relatively high (for example, 70 to 90 km / h), and in order to ensure operational efficiency, the operating hours of trucks are often selected from 2 am to 5 am. However, drivers are prone to fatigue driving during this operating period, and collision accidents are more likely to occur during this operating period. Therefore, the application of hydrogen fuel cells in trucks (especially after a collision) is more likely to pose safety hazards.

[0003] Currently, the primary collision protection device for hydrogen fuel cell vehicles on the market is an acceleration sensor. Chinese invention patent application publication number CN112298087A discloses a collision safety control system and method for a hydrogen fuel cell vehicle. The acceleration sensor detects vehicle acceleration signals and transmits them to an airbag controller. The airbag controller determines whether a collision has occurred based on the acceleration signals and sends the collision signal to a hydrogen supply system controller. The hydrogen supply system controller receives the collision signal and controls the opening and closing of the hydrogen tank port solenoid valve. However, using only an acceleration collision sensor to determine collision conditions can easily lead to false alarms. Some vehicles also use a collision contact sensor alone. Chinese invention patent application publication number CN1908607A discloses a motion collision contact sensing device. Based on the collision contact information sensed by the motion collision contact sensing device (including collision occurrence and collision location information), the device automatically takes appropriate countermeasures. However, because the collision sensor detects point collisions, its detection results are not accurate. Summary of the Invention

[0004] The present invention provides a collision detection method, system and vehicle for a hydrogen fuel cell vehicle, which are used to solve the problem of inaccurate collision detection of existing hydrogen fuel cell vehicles.

[0005] To solve the above technical problems, the present invention provides a collision detection method for a hydrogen fuel cell vehicle, comprising: real-time detection of the acceleration value and hydrogen concentration value of the vehicle, recording the duration that the acceleration value is greater than a set acceleration threshold, and sensing the impact force when a collision occurs; comparing the impact force with the impact force threshold, if the impact force is greater than or equal to the impact force threshold, determining that the vehicle has a fault; if the impact force is less than the impact force threshold, comparing the acceleration value with the set acceleration threshold, if the acceleration value is greater than or equal to the set acceleration threshold, determining the fault level of the vehicle based on the duration, the set time threshold, the hydrogen concentration value and the set concentration threshold, and if the acceleration value is less than the set acceleration threshold, determining that the vehicle has no fault.

[0006] The beneficial effect of the above technical solution is that when a vehicle collides, relevant parameters such as impact force, acceleration value, duration and hydrogen concentration value can reflect the degree of collision failure to varying degrees. Therefore, determining whether the vehicle has a fault based on a comprehensive comparison of impact force, acceleration value, duration and hydrogen concentration value can improve the accuracy of the detection results.

[0007] Furthermore, in order to more accurately know the degree of collision failure of a vehicle, the present invention provides a hydrogen fuel cell vehicle collision detection method, including the step of determining that the vehicle has a fault if the impact force is greater than or equal to the impact force threshold: if the impact force is greater than or equal to the impact force threshold, comparing the acceleration value with the set acceleration threshold; if the acceleration value is greater than or equal to the set acceleration threshold, determining that the vehicle has a first-level fault; if the acceleration value is less than the set acceleration threshold, determining that the vehicle has a second-level fault.

[0008] Furthermore, in order to more accurately know the degree of collision failure of a vehicle, the present invention provides a hydrogen fuel cell vehicle collision detection method, including the steps of determining the fault level of the vehicle based on duration, set time threshold, hydrogen concentration value and set concentration threshold, including: the set time threshold includes a first set time threshold and a second set time threshold, the first set time threshold is less than the second set time threshold, the duration is compared with the first set time threshold, if the duration is less than the first set time threshold, the fault level of the vehicle is determined based on the hydrogen concentration value and the set concentration threshold, if the duration is greater than or equal to the first set time threshold, the fault level of the vehicle is determined based on the duration, the second set time threshold, the hydrogen concentration value and the set concentration threshold.

[0009] Furthermore, in order to more accurately know the degree of collision failure of a vehicle, the present invention provides a hydrogen fuel cell vehicle collision detection method, including the step of determining the fault level of the vehicle based on the hydrogen concentration value and the set concentration threshold, including: the set concentration threshold includes a first set concentration threshold and a second set concentration threshold, the first set concentration threshold is less than the second set concentration threshold, the hydrogen concentration value is compared with the first set concentration threshold, if the hydrogen concentration value is less than the first set concentration threshold, it is determined that the vehicle has a third level fault, if the hydrogen concentration value is greater than or equal to the first set concentration threshold, then the hydrogen concentration value is compared with the second set concentration threshold, if the hydrogen concentration value is less than the second set concentration threshold, it is determined that the vehicle has a second level fault, if the hydrogen concentration value is greater than or equal to the second set concentration threshold, it is determined that the vehicle has a first level fault.

[0010] Furthermore, in order to more accurately know the degree of collision failure of a vehicle, the present invention provides a hydrogen fuel cell vehicle collision detection method, including a step of determining the fault level of the vehicle based on the duration, the second set time threshold, the hydrogen concentration value and the set concentration threshold, including: comparing the duration with the second set time threshold, if the duration is less than the second set time threshold, comparing the hydrogen concentration value with the first set concentration threshold, if the hydrogen concentration value is less than the first set concentration threshold, determining that the vehicle has a secondary fault, if the hydrogen concentration value is greater than or equal to the first set concentration threshold, determining that the vehicle has a primary fault, and if the duration is greater than or equal to the second set time threshold, determining that the vehicle has a primary fault.

[0011] Furthermore, in order to reduce the impact of minor collisions on vehicle operation and to capture collision situations that affect operational safety in a timely and effective manner, the present invention provides a hydrogen fuel cell vehicle collision detection method, including: if the vehicle has a first-level fault, the vehicle shuts off the hydrogen and the fuel cell is shut down; if the vehicle has a second-level fault, the vehicle shuts off the hydrogen; if the vehicle has a third-level fault, the vehicle issues a reminder.

[0012] To address the above technical problems, the present invention provides a collision detection system for a hydrogen fuel cell vehicle, comprising an acceleration sensor, a contact sensor, a hydrogen concentration sensor, and a controller. The acceleration sensor is configured to detect the vehicle's acceleration in real time and transmit it to the controller. The contact sensor is configured to sense the impact force during a collision and compare it with an impact force threshold. If the impact force exceeds the impact force threshold, the contact sensor closes and outputs a close signal. The hydrogen concentration sensor is configured to detect the hydrogen concentration in real time and transmit it to the controller. The controller records the duration of the acceleration value exceeding a set acceleration threshold. If the controller receives the close signal, it determines the vehicle's fault level based on the acceleration value and the set acceleration threshold. If the controller does not receive the close signal, it determines the vehicle's fault level based on the acceleration value, the set acceleration threshold, the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold. In this case, the acceleration sensor, contact sensor, and hydrogen concentration sensor are coupled together, and the controller determines whether the vehicle has a fault based on a comprehensive comparison of the close signal, acceleration value, duration, and hydrogen concentration value. This improves the accuracy of the detection results.

[0013] Furthermore, in order to more accurately know the degree of collision failure of a vehicle, the present invention provides a hydrogen fuel cell vehicle collision detection system, including the set time threshold including a first set time threshold and a second set time threshold, the first set time threshold being less than the second set time threshold, and the step of determining the fault level of the vehicle based on the acceleration value, the set acceleration threshold, the duration, the set time threshold, the hydrogen concentration value and the set concentration threshold including: comparing the acceleration value with the set acceleration threshold, if the acceleration value is greater than or equal to the set acceleration threshold, then comparing the duration with the first set time threshold, if the duration is less than the first set time threshold, then determining the fault level of the vehicle based on the hydrogen concentration value and the set concentration threshold, if the duration is greater than or equal to the first set time threshold, then comparing the duration with the second set time threshold, if the duration is less than the second set time threshold, then determining the fault level of the vehicle based on the hydrogen concentration value and the set concentration threshold, if the duration is greater than or equal to the first set time threshold,

[0014] Furthermore, in order to make full use of the vehicle's own controller to determine whether the vehicle has a fault, the present invention provides a hydrogen fuel cell vehicle collision detection system, including the controller comprising a vehicle controller and a hydrogen controller, the hydrogen controller receiving the hydrogen concentration value, comparing the hydrogen concentration value with a set concentration threshold, and transmitting the comparison result to the vehicle controller. If the vehicle controller does not receive the closing signal, the fault level of the vehicle is determined based on the comparison result of the acceleration value, the set acceleration threshold, the duration, the set time threshold, the hydrogen concentration value and the set concentration threshold. If the closing signal is received, the acceleration value is compared with the set acceleration threshold to determine the fault level of the vehicle.

[0015] The present invention also provides a vehicle, comprising a fuel cell, and characterized in that it also comprises the above-mentioned hydrogen fuel cell vehicle collision detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of a hydrogen fuel cell vehicle collision detection method of the present invention;

[0017] Figure 2 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 1 ;

[0018] Figure 3 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 2 ;

[0019] Figure 4 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 3 . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and technical effects of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Hydrogen fuel cell vehicle collision detection method embodiment:

[0022] This embodiment provides a method for detecting collisions with a hydrogen fuel cell vehicle. The method for detecting collisions with a hydrogen fuel cell vehicle may be referred to as a collision detection method. The collision detection method according to this embodiment can improve the accuracy of detection results.

[0023] Figure 1 FIG. 1 is a flow chart of the hydrogen fuel cell vehicle collision detection method of the present invention. Figure 1As shown, the collision detection method includes detecting acceleration values, duration, and hydrogen concentration values. Specifically, detecting the acceleration value can be real-time detection of the vehicle's acceleration value. Detecting the hydrogen concentration value can be real-time detection of the vehicle's hydrogen concentration value. In this case, the acceleration value and hydrogen concentration value can be obtained in a timely manner, thereby shortening the time required to determine whether the vehicle has a fault. In this embodiment, the acceleration value can be obtained by the vehicle's acceleration sensor. The hydrogen concentration value can be obtained by a hydrogen concentration sensor.

[0024] In this embodiment, duration refers to the time that the detected acceleration value exceeds a set acceleration threshold. The set acceleration threshold is adjustable and can be set based on the actual operating conditions of different types of vehicles. This allows for adaptation to actual collision scenarios of different types of vehicles. For example, for a 36-ton truck, the set acceleration threshold may be, but is not limited to, 2.2 g.

[0025] In this embodiment, if Figure 1 As shown, the collision detection method includes determining whether a contact sensor is closed. Specifically, the closure of the contact sensor can be determined based on the impact force when the collision occurs. The contact sensor can sense the impact force when the collision occurs and compare the impact force with an impact force threshold.

[0026] In this embodiment, if the impact force is greater than or equal to the impact force threshold, in which case the contact sensor closes, a vehicle fault can be determined. If the impact force is less than the impact force threshold, in which case the contact sensor does not close, a vehicle fault can be determined based on the acceleration value, duration, and hydrogen concentration. In this case, the collision detection method of this embodiment can determine whether the vehicle fault exists based on a comprehensive comparison of the impact force, acceleration value, duration, and hydrogen concentration, thereby improving the accuracy of the detection results.

[0027] In this embodiment, if the impact force is greater than or equal to the impact force threshold, the step of determining that the vehicle has a fault may include: if the impact force is greater than or equal to the impact force threshold (i.e., the contact sensor is closed), then the acceleration value may be compared with a set acceleration threshold; if the acceleration value is greater than or equal to the set acceleration threshold, then it is determined that the vehicle has a first-level fault; if the acceleration value is less than the set acceleration threshold, then it is determined that the vehicle has a second-level fault (see Figure 1 ). Thus, the degree of the vehicle's collision failure can be more accurately known.

[0028] In this embodiment, the contact sensor is not closed, and the step of determining whether the vehicle has a fault based on the acceleration value, duration, and hydrogen concentration value may include: if the impact force is less than the impact force threshold (i.e., the contact sensor is not closed), then the acceleration value may be compared with a set acceleration threshold; if the acceleration value is greater than or equal to the set acceleration threshold, then the fault level of the vehicle is determined based on the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold; if the acceleration value is less than the set acceleration threshold, then the vehicle has no fault (see Figure 1 ).

[0029] In this embodiment, the set time threshold may be one or more, and the set concentration threshold may be one or more. In this case, determining the fault level based on one or more set time thresholds and set concentration thresholds can adapt to different collision situations.

[0030] In this embodiment, when multiple time thresholds are set, the time thresholds may include a first time threshold and a second time threshold. The first time threshold is smaller than the second time threshold. For example, for a 36-ton truck, the first time threshold may be, but is not limited to, 1 second. The second time threshold may be, but is not limited to, 3 seconds.

[0031] In this embodiment, the step of determining the vehicle's fault level based on the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold may include comparing the duration with a first set time threshold; if the duration is less than the first set time threshold, determining the vehicle's fault level based on the hydrogen concentration value and the set concentration threshold; and if the duration is greater than or equal to the first set time threshold, determining the vehicle's fault level based on the duration, the second set time threshold, the hydrogen concentration value, and the set concentration threshold. This allows for more accurate determination of the vehicle's collision fault level.

[0032] In this embodiment, when multiple concentration thresholds are set, the set concentration thresholds include a first set concentration threshold and a second set concentration threshold, where the first set concentration threshold is less than the second set concentration threshold. For example, for a 36-ton truck, the first set concentration threshold may be, but is not limited to, 20,000 ppm. The second set concentration threshold may be, but is not limited to, 40,000 ppm.

[0033] In this embodiment, the step of determining the fault level of the vehicle based on the hydrogen concentration value and the set concentration threshold may include: comparing the hydrogen concentration value with the first set concentration threshold, and if the hydrogen concentration value is less than the first set concentration threshold, determining that the vehicle has a third-level fault. If the hydrogen concentration value is greater than or equal to the first set concentration threshold, then comparing the hydrogen concentration value with the second set concentration threshold, and if the hydrogen concentration value is less than the second set concentration threshold, determining that the vehicle has a second-level fault. If the hydrogen concentration value is greater than or equal to the second set concentration threshold, then determining that the vehicle has a first-level fault (see Figure 1 ). Thus, the degree of the vehicle's collision failure can be more accurately known.

[0034] In this embodiment, the step of determining the vehicle's fault level based on the duration, the second set time threshold, the hydrogen concentration, and the set concentration threshold may include: comparing the duration with the second set time threshold; if the duration is greater than or equal to the second set time threshold, determining that the vehicle has a primary fault. If the duration is less than the second set time threshold, then comparing the hydrogen concentration with the first set concentration threshold; if the hydrogen concentration is less than the first set concentration threshold, determining that the vehicle has a secondary fault; and if the hydrogen concentration is greater than or equal to the first set concentration threshold, determining that the vehicle has a primary fault. This allows for a more accurate assessment of the vehicle's collision fault severity.

[0035] In this embodiment, the fault levels can include level 1, level 2, or level 3. If the vehicle experiences a level 1 fault, the vehicle shuts off hydrogen and the fuel cell. If the vehicle experiences a level 2 fault, the vehicle shuts off hydrogen. If the vehicle experiences a level 3 fault, the vehicle issues an alert. In this case, different vehicle responses are tailored to the fault level, mitigating the impact of minor collisions on vehicle operation while also enabling timely and effective detection of collisions that could impact operational safety.

[0036] Furthermore, in this embodiment, if a level 1 or level 2 fault occurs, the vehicle can provide a warning in addition to the aforementioned vehicle responses. The warning methods for level 1, level 2, and level 3 faults differ. These warning methods include, but are not limited to, light, sound, and vibration, or a combination thereof.

[0037] However, the embodiments of the present invention are not limited thereto. In some embodiments, the acceleration threshold may be set to be multiple. In other embodiments, the time threshold may be set to be three or more. The concentration threshold may be set to be three or more. The fault level may be four or more. For example, when the acceleration threshold is set to n, the time threshold is set to n, or the concentration threshold is set to n, the fault level may be n+1, where n is a natural number. The value of n can be set based on the needs of different types of vehicles. In this case, different vehicles can better meet the different protective responses to different collision situations, thereby being better suitable for use in complex collision situations (or collision conditions) of fuel cell vehicles.

[0038] Hydrogen fuel cell vehicle collision detection system embodiment:

[0039] This embodiment discloses a collision detection system for hydrogen fuel cell vehicles. This collision detection system can be referred to as a collision detection system. This collision detection system can improve the accuracy of detection results. This collision detection system can also implement the collision detection method for hydrogen fuel cell vehicles described in the method embodiments of the present invention.

[0040] Figure 2 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 1 . Figure 3 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 2 . Figure 4 This is the principle framework of the hydrogen fuel cell vehicle collision detection system of the present invention. Figure 3 In this embodiment, Figure 2 As shown, the hydrogen fuel cell vehicle collision detection system 1 may include an acceleration sensor 10 , a contact sensor 20 , a hydrogen concentration sensor 30 and a controller 40 .

[0041] In this embodiment, the acceleration sensor 10 can be used to detect the acceleration value of the vehicle in real time, that is, the acceleration sensor 10 can detect the instantaneous acceleration value of the vehicle.

[0042] In this embodiment, the contact sensor 20 can be used to sense the impact force during a collision and compare the impact force with an impact force threshold. If the impact force is greater than the impact force threshold, the contact sensor 20 closes and outputs a closing signal.

[0043] In this embodiment, the acceleration threshold is adjustable. The acceleration threshold can be set accordingly according to the actual operating conditions of different types of vehicles. Thus, it can adapt to the actual collision conditions of different types of vehicles.

[0044] In this embodiment, there may be one or more contact sensors 20. Multiple contact sensors may be set at locations where the vehicle is prone to collision based on actual needs. For example, multiple contact sensors may be set at the front and rear of the vehicle.

[0045] In this embodiment, the hydrogen concentration sensor 30 can be used to detect the hydrogen concentration value in real time and transmit it to the controller 40. The hydrogen concentration value detected by the hydrogen concentration sensor 30 is transmitted to the controller 40 in the form of a hydrogen concentration signal.

[0046] In this embodiment, the controller 40 may record the duration of the acceleration value being greater than the set acceleration threshold value. The duration refers to the time during which the detected acceleration value is greater than the set acceleration threshold value.

[0047] In this embodiment, if a closing signal is received, the controller 40 can determine the vehicle's fault level based on the acceleration value and the set acceleration threshold. If no closing signal is received, the controller 40 can determine the vehicle's fault level based on the acceleration value, the set acceleration threshold, the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold. In this case, the acceleration sensor 10, the contact sensor 20, and the hydrogen concentration sensor 30 in this embodiment are coupled together to achieve complementary component functions. The controller 40 determines whether the vehicle has a fault based on a comprehensive comparison of the closing signal, the acceleration value, the duration, and the hydrogen concentration value, thereby improving the accuracy of the detection results.

[0048] In this embodiment, the time threshold may be set to one or more. The concentration threshold may be set to one or more. For details, please refer to the corresponding description in the method embodiment, which will not be repeated here. The concentration threshold may be set in the controller 40.

[0049] In this embodiment, when there are multiple set time thresholds, the set time thresholds may include a first set time threshold and a second set time threshold. The first set time threshold is smaller than the second set time threshold.

[0050] In this embodiment, the step of determining the vehicle's fault level based on the acceleration value, a set acceleration threshold, duration, a set time threshold, a hydrogen concentration value, and a set concentration threshold may include: comparing the acceleration value with the set acceleration threshold. If the acceleration value is greater than or equal to the set acceleration threshold, the controller 40 may compare the duration with a first set time threshold. If the duration is less than the first set time threshold, the controller 40 may determine the vehicle's fault level based on the hydrogen concentration value and the set concentration threshold. If the duration is greater than or equal to the first set time threshold, the controller 40 may compare the duration with a second set time threshold. If the duration is less than the second set time threshold, the controller 40 may determine the vehicle's fault level based on the hydrogen concentration value and the set concentration threshold. If the duration is greater than or equal to the second set time threshold, the vehicle is determined to have a level 1 fault. This allows for a more accurate understanding of the vehicle's collision fault level. The method for determining whether a vehicle has a fault has been described in detail in the above method embodiment. Those skilled in the art can understand the controller 40's determination method based on the collision detection method, and will not be further described here.

[0051] In this embodiment, the fault level can include a level 1 fault, a level 2 fault, or a level 3 fault. If the vehicle has a level 1 fault, the vehicle shuts off the hydrogen and the fuel cell shuts down. If the vehicle has a level 2 fault, the vehicle shuts off the hydrogen. If the vehicle has a level 3 fault, the vehicle issues a warning. In this case, different vehicle responses (i.e., vehicle-wide actions) for different fault levels can not only reduce the impact of minor collisions on vehicle operation, but also promptly and effectively capture collisions that affect operational safety.

[0052] In this embodiment, if Figure 3 As shown, the controller 40 may include a vehicle controller 41 and a hydrogen controller 42. In this case, by utilizing the acceleration sensor 10, contact sensor 20, and hydrogen concentration sensor 30, the vehicle controller 41 and hydrogen controller 42 are combined to form a collision detection system 1, thereby enabling control of hydrogen system components and the entire vehicle. This allows the vehicle's own controller to be fully utilized to determine whether a vehicle fault exists.

[0053] Specifically, in this embodiment, the vehicle controller 41 can record the duration that the acceleration value exceeds the set acceleration threshold. The vehicle controller 41 can obtain the acceleration value detected by the acceleration sensor 10 and the closing signal output by the contact sensor 20. The hydrogen controller 42 can receive the hydrogen concentration value (i.e., receive the hydrogen concentration signal), compare the hydrogen concentration value with the set concentration threshold, and transmit the comparison result to the vehicle controller 41. The set concentration threshold can be set in the hydrogen controller 42.

[0054] In this embodiment, if no closing signal is received, the vehicle controller 41 can determine the vehicle's fault level based on a comparison of the acceleration value, the set acceleration threshold, the duration, the set time threshold, the hydrogen concentration value, and the set concentration threshold. If a closing signal is received, the vehicle controller 41 can compare the acceleration value with the set acceleration threshold to determine the vehicle's fault level. In this case, the vehicle controller 41 and the hydrogen controller 42 are used to determine whether the vehicle has a fault. Thus, the processing of the vehicle controller 41 and the hydrogen system controller 42 can implement different vehicle passive protection actions (such as cutting off the hydrogen supply) in response to different collision situations.

[0055] In addition, the number of acceleration thresholds, time thresholds, concentration thresholds, and fault levels may not be limited to the number listed in this embodiment. Detailed descriptions can be made in the corresponding descriptions in the method embodiment, which will not be repeated here.

[0056] In this embodiment, if Figure 4 As shown, the collision detection system 1 may also include an onboard hydrogen system 50. The onboard hydrogen system 50 can provide hydrogen to the vehicle. If a primary or secondary fault occurs in the vehicle, the vehicle controller 41 controls the shutoff of the hydrogen supply by cutting off the power supply to the hydrogen system 50's cylinder valve. In this embodiment, if a primary fault occurs in the vehicle, the vehicle controller 41 shuts off the vehicle's power source, shutting down the fuel cell.

[0057] Vehicle Example:

[0058] This embodiment also provides a vehicle that can include a fuel cell and the hydrogen fuel cell vehicle collision detection system of the system embodiment of the present invention. This system enables the vehicle to respond differently based on different collision scenarios, thereby reducing the impact of minor collisions on vehicle operation while also promptly and effectively detecting collisions that could affect operational safety.

[0059] The vehicles in this embodiment include but are not limited to transportation vehicles, such as cars, buses, trucks, etc.

Claims

1. A hydrogen fuel cell vehicle collision detection method, characterized in that: include: Real-time detection of the vehicle's acceleration value a and hydrogen concentration value y, recording the duration T during which the acceleration value a is greater than a set acceleration threshold a0, and sensing the impact force F when a collision occurs; Compare the impact force F with the impact force threshold F0. If F≥F0, then compare a with a0. If a≥a0, the vehicle has a first-level fault. If a<a0, the vehicle has a second-level fault. If F<F0, then compare a with a0. If a<a0, the vehicle has no fault. If a≥a0 and T<T1 and y<y1, the vehicle has a third-level fault. If a≥a0 and T<T1 and y1≤y<y2, the vehicle has a second-level fault. If a≥a0 and T<T1 and y≥y2, the vehicle has a first-level fault. If a≥a0 and T1≤T<T2 and y<y1, the vehicle has a second-level fault. If a≥a0 and T1≤T<T2 and y≥y1, the vehicle has a first-level fault. If a≥a0 and T≥T2, the vehicle has a first-level fault. Wherein, T1 is the first time setting threshold, T2 is the second time setting threshold, y1 is the first setting concentration threshold, and y2 is the second setting concentration threshold.

2. The hydrogen fuel cell vehicle collision detection method according to claim 1, characterized in that: If the vehicle has a level one fault, the vehicle shuts off hydrogen and the fuel cell is shut down. If the vehicle has a level two fault, the vehicle shuts off hydrogen. If the vehicle has a level three fault, the vehicle issues a warning.

3. A hydrogen fuel cell vehicle collision detection system, characterized in that: include: An acceleration sensor, a contact sensor, a hydrogen concentration sensor, and a controller. The acceleration sensor is used to detect the vehicle's acceleration value a in real time and transmit it to the controller. The contact sensor is used to sense the impact force F during a collision and compare the impact force F with the impact force threshold F0. If F>F0, the contact sensor closes and outputs a closing signal. The hydrogen concentration sensor is used to detect the hydrogen concentration value y in real time and transmit it to the controller. The controller records the duration T during which the acceleration value a is greater than the set acceleration threshold a0. If the controller receives the closing signal, it compares a with a0. If a≥a0, the vehicle has a primary fault. If a<a0, the vehicle has a secondary fault. If no closing signal is received, compare a with a0. If a<a0, the vehicle has no fault. If a≥a0 and T<T1 and y<y1, the vehicle has a third-level fault. If a≥a0 and T<T1 and y1≤y<y2, the vehicle has a second-level fault. If a≥a0 and T<T1 and y≥y2, the vehicle has a first-level fault. If a≥a0 and T<T1 and y≥y2, the vehicle has a second-level fault. If a≥a0 and T1≤T<T2 and y<y1, the vehicle has a second-level fault. If a≥a0 and T1≤T<T2 and y≥y1, the vehicle has a first-level fault. If a≥a0 and T≥T2, the vehicle has a first-level fault; where T1 is the first time setting threshold, T2 is the second time setting threshold, y1 is the first setting concentration threshold, and y2 is the second setting concentration threshold.

4. The hydrogen fuel cell vehicle collision detection system according to claim 3, characterized in that: If the vehicle has a level one fault, the vehicle shuts off hydrogen and the fuel cell is shut down. If the vehicle has a level two fault, the vehicle shuts off hydrogen. If the vehicle has a level three fault, the vehicle issues a warning.

5. A vehicle comprising a fuel cell, characterized in that: It also includes the hydrogen fuel cell vehicle collision detection system according to claim 3 or 4.

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