Vehicle hydrogen cylinder fault processing method and device and vehicle
By receiving status parameters and fault information from the hydrogen cylinder control module and using pre-set strategies to handle hydrogen cylinder faults, the problem of inaccurate hydrogen cylinder fault detection in existing technologies is solved, achieving the effects of vehicle safety and precise fault location.
Patent Information
- Application Number
- CN202511212524.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2025-12-12
AI Technical Summary
Existing technology cannot detect the operating status of hydrogen cylinders in a timely and accurate manner, resulting in an inability to effectively handle hydrogen cylinder malfunctions and affecting vehicle safety and driving performance.
By receiving equipment status parameters and fault information sent by the hydrogen cylinder control module, and using pre-set fault handling strategies, the fault type and level are determined, and the corresponding modules are controlled to perform handling operations, including strategies such as engine shutdown and motor torque zeroing, to ensure vehicle safety and accurate fault location.
It enables timely detection and handling of hydrogen cylinder malfunctions, ensuring vehicle safety and the stability of the hydrogen system. It can accurately locate faults and guide troubleshooting, ensuring the limp-riding performance of hybrid vehicles.
Smart Images
Figure CN121106316A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fault detection technology, and more specifically, to a method, apparatus and vehicle for handling vehicle hydrogen cylinder faults. Background Technology
[0002] With the increasing global pursuit of sustainable energy solutions, hydrogen energy, as a clean and efficient energy option, has attracted widespread attention and discussion regarding its application prospects in the automotive industry. Hydrogen engines offer a power solution similar to gasoline engines but more environmentally friendly, providing new possibilities for reducing greenhouse gas emissions and protecting the environment. As a crucial system in the vehicle, the onboard hydrogen storage system plays a vital role, and its safety and troubleshooting are critical issues that the entire vehicle manufacturer must address.
[0003] Given that hydrogen cylinders are a crucial system in hybrid vehicles equipped with hydrogen fuel cells, their safety and fault handling control methods are of paramount importance. Currently, there is no way to detect the operating status of hydrogen cylinders in a timely manner. Therefore, improving the accuracy and efficiency of hydrogen cylinder fault detection, while also being able to handle faults promptly to ensure normal vehicle operation, is an urgent problem to be solved. Summary of the Invention
[0004] The purpose of some embodiments of this application is to provide a method, apparatus, and vehicle for handling vehicle hydrogen cylinder malfunctions. Through the technical solutions of the embodiments of this application, the method involves receiving hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module. The target fault information includes at least a target fault type and a target fault level corresponding to the target fault type, and the target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters. Furthermore, a target fault handling strategy corresponding to the target fault level is determined according to a pre-set fault handling strategy. The pre-set fault handling strategy includes at least a fault level and a fault handling method corresponding to the fault level. The strategy involves controlling the corresponding modules to perform processing operations based on the target fault handling strategy. In this embodiment, the status parameters of the hydrogen cylinder equipment are collected, and the fault type and corresponding fault level of the hydrogen cylinder itself are determined based on these parameters. The fault type and fault level are then sent to the vehicle control module. The vehicle control module determines the corresponding target fault handling strategy based on the fault type and fault level, thereby controlling the corresponding modules to perform operations. This allows for timely understanding of the fault level of the hydrogen cylinder and also determines the fault level of the entire vehicle. This not only effectively ensures vehicle safety and hydrogen system safety, but also accurately locates faults to guide troubleshooting and ensures the limp-riding performance of hybrid vehicles.
[0005] Firstly, some embodiments of this application provide a method for handling vehicle hydrogen cylinder malfunctions, applied to a vehicle control module, wherein the vehicle control module is connected to a hydrogen cylinder control module, and the hydrogen cylinder control module is connected to a data acquisition module, comprising: The system receives hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module. The target fault information includes at least a target fault type and a target fault level corresponding to the target fault type. The target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters. Based on a pre-set fault handling strategy, a target fault handling strategy corresponding to the target fault level is determined, wherein the pre-set fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. According to the target fault handling strategy, control the corresponding module to perform processing operations.
[0006] Some embodiments of this application collect hydrogen cylinder equipment status parameters, determine the fault type and corresponding fault level of the hydrogen cylinder itself based on these parameters, and send the fault type and fault level to the vehicle control module. The vehicle control module determines the corresponding target fault handling strategy based on the fault type and fault level, thereby controlling the corresponding module to perform the operation. This allows for timely understanding of the fault level of the hydrogen cylinder and also determines the fault level of the entire vehicle. This not only effectively ensures vehicle safety and hydrogen system safety, but also accurately locates faults to guide troubleshooting, and ensures the limp-riding performance of hybrid vehicles.
[0007] Optionally, the acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: The hydrogen leak detector is used to collect hydrogen concentration; The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
[0008] Some embodiments of this application can detect hydrogen cylinders from multiple aspects by setting up multiple different types of sensors, such as hydrogen leak detectors, hydrogen cylinder pressure sensors, and hydrogen cylinder temperature sensors, thereby improving the diversity of hydrogen cylinder detection.
[0009] Optionally, the target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leak fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault. In some embodiments of this application, the hydrogen cylinder control module compares the collected sensor values with corresponding preset values to determine the fault type.
[0010] Optionally, determining the target fault handling strategy corresponding to the target fault level based on a pre-set fault handling strategy includes: If the target fault level is a first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and coasts to a stop.
[0011] In some embodiments of this application, the vehicle control module diagnoses hydrogen tank faults not only by the faults of the components themselves, but also by the failures of the system. Based on the consequences of various faults, fault handling can not only effectively ensure vehicle safety and hydrogen system safety, but also accurately locate faults to guide troubleshooting, and ensure the limp-riding performance of hybrid vehicles.
[0012] Optionally, controlling the corresponding module to perform processing operations according to the target fault handling strategy includes: According to the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle to limp.
[0013] In some embodiments of this application, after determining the fault level of the whole machine, the overall control module determines different fault handling strategies for different fault levels, and then controls different modules of the vehicle to perform corresponding operations. In this way, emissions can be avoided and vehicle driving safety can be guaranteed.
[0014] Optionally, the method further includes: Send a fault display command to the display module; According to the fault display instruction, the target fault information and alarm information are displayed.
[0015] Some embodiments of this application include a display module that displays target fault information and alarm information, allowing users to promptly understand the overall fault status of the vehicle and address the fault in a timely manner.
[0016] Secondly, some embodiments of this application provide a vehicle hydrogen cylinder fault handling device, applied to a vehicle control module, wherein the vehicle control module is connected to a hydrogen cylinder control module, and the hydrogen cylinder control module is connected to a data acquisition module, comprising: A receiving unit is configured to receive hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module, wherein the target fault information includes at least a target fault type and a target fault level corresponding to the target fault type, and the target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters; The determining unit is configured to determine a target fault handling strategy corresponding to the target fault level based on a pre-set fault handling strategy, wherein the pre-set fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. The processing unit is used to control the corresponding module to perform processing operations according to the target fault handling strategy.
[0017] Some embodiments of this application collect hydrogen cylinder equipment status parameters, determine the fault type and corresponding fault level of the hydrogen cylinder itself based on these parameters, and send the fault type and fault level to the vehicle control module. The vehicle control module determines the corresponding target fault handling strategy based on the fault type and fault level, thereby controlling the corresponding module to perform the operation. This allows for timely understanding of the fault level of the hydrogen cylinder and also determines the fault level of the entire vehicle. This not only effectively ensures vehicle safety and hydrogen system safety, but also accurately locates faults to guide troubleshooting, and ensures the limp-riding performance of hybrid vehicles.
[0018] Optionally, the acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: The hydrogen leak detector is used to collect hydrogen concentration; The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
[0019] Some embodiments of this application can detect hydrogen cylinders from multiple aspects by setting up multiple different types of sensors, such as hydrogen leak detectors, hydrogen cylinder pressure sensors, and hydrogen cylinder temperature sensors, thereby improving the diversity of hydrogen cylinder detection.
[0020] Optionally, the target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leak fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault. In some embodiments of this application, the hydrogen cylinder control module compares the collected sensor values with corresponding preset values to determine the fault type.
[0021] Optionally, the determining unit is configured to: If the target fault level is a first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and coasts to a stop.
[0022] In some embodiments of this application, the vehicle control module diagnoses hydrogen tank faults not only by the faults of the components themselves, but also by the failures of the system. Based on the consequences of various faults, fault handling can not only effectively ensure vehicle safety and hydrogen system safety, but also accurately locate faults to guide troubleshooting, and ensure the limp-riding performance of hybrid vehicles.
[0023] Optionally, the processing unit is configured to: According to the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle to limp.
[0024] In some embodiments of this application, after determining the fault level of the whole machine, the overall control module determines different fault handling strategies for different fault levels, and then controls different modules of the vehicle to perform corresponding operations. In this way, emissions can be avoided and vehicle driving safety can be guaranteed.
[0025] Optionally, the processing unit is configured to: Send a fault display command to the display module; According to the fault display instruction, the target fault information and alarm information are displayed.
[0026] Some embodiments of this application include a display module that displays target fault information and alarm information, allowing users to promptly understand the overall fault status of the vehicle and address the fault in a timely manner.
[0027] Thirdly, some embodiments of this application provide a vehicle for performing the vehicle hydrogen cylinder failure handling method described in any embodiment of the first aspect. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of some embodiments of this application, the accompanying drawings used in some embodiments of this application will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 A flowchart illustrating a method for handling vehicle hydrogen cylinder malfunctions, provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a hybrid vehicle provided in an embodiment of this application; Figure 3 A flowchart illustrating another method for handling vehicle hydrogen cylinder malfunctions provided in this application embodiment; Figure 4 A flowchart illustrating another method for handling vehicle hydrogen cylinder malfunctions provided in this application embodiment; Figure 5 This is a schematic diagram of a vehicle hydrogen cylinder fault handling device provided in an embodiment of this application. Detailed Implementation
[0030] The technical solutions of some embodiments of this application will now be described with reference to the accompanying drawings.
[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] like Figure 1 As shown, an embodiment of this application provides a method for handling vehicle hydrogen cylinder malfunctions, applied to a vehicle control module. The vehicle control module is connected to a hydrogen cylinder control module, and the hydrogen cylinder control module is connected to a data acquisition module. The method includes: S101. Receive hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module. The target fault information includes at least the target fault type and the target fault level corresponding to the target fault type. The target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters. like Figure 2As shown, the embodiments of this application are applied to a vehicle, which includes at least an engine management system 1 (hereinafter referred to as EMS), an engine 2, a generator control unit 3 (hereinafter referred to as MCU2), a generator inverter 4 (hereinafter referred to as INV2), a generator 5, a drive motor control unit 6 (hereinafter referred to as MCU1), a drive motor inverter 7 (hereinafter referred to as inverter INV1), a drive motor 8, a power battery 9, a battery management system 10 (hereinafter referred to as BMS), a vehicle controller 11 (hereinafter referred to as HCU, i.e., vehicle control module), wheels 12, a clutch 13, a reduction gear 14, and a hydrogen tank control module. The modules are connected to each other via a CAN bus.
[0033] The hydrogen cylinder control module receives various parameters of the hydrogen cylinder, namely the hydrogen cylinder equipment status parameters, such as hydrogen cylinder pressure, power supply voltage, operating voltage, or temperature, collected by sensors. Then, it judges these parameters to obtain the fault type and corresponding fault level of the hydrogen cylinder. The hydrogen cylinder control module sends the hydrogen cylinder equipment status parameters, fault type, and fault level to the whole machine control module.
[0034] S102. Based on the pre-set fault handling strategy, determine the target fault handling strategy corresponding to the target fault level, wherein the pre-set fault handling strategy includes at least the fault level and the fault handling strategy corresponding to the fault level. Specifically, the whole machine control module is pre-set with a fault handling strategy. The fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. The fault handling strategy includes at least two options: the vehicle continues to drive and the vehicle stops driving.
[0035] Once the overall control module obtains the target fault level, it matches it with the pre-set fault handling strategies to obtain the target fault handling strategy corresponding to the target fault level.
[0036] For example, if the target fault level is level 1, the corresponding target fault handling strategy is to control the hybrid vehicle to operate normally; if the target fault level is level 2, the corresponding target fault handling strategy is for the HCU to send a shutdown control command to the EMS and simultaneously control the generator to shut down. After the EMS shuts down, the HCU controls the HMS to close the hydrogen tank valve; the HCU simultaneously controls the drive motor to continue outputting torque, and the vehicle limps in pure electric mode; if the target fault level is level 3, the corresponding target fault handling strategy is for the HCU to control the engine to shut down, the clutch to disengage, the motor torque to zero, and the generator torque to zero, and then control the vehicle to cut off the high voltage, so that the vehicle cannot move and coasts to a stop. In other words, the HCU determines different fault handling strategies according to different fault levels.
[0037] S103. Based on the target fault handling strategy, control the corresponding module to perform the handling operation.
[0038] Specifically, after receiving the target processing strategy, the overall control module controls the corresponding modules to perform different processing operations, analyzes the consequences of the fault, formulates a vehicle-level fault handling strategy, sends control commands to the motor system, battery system, engine system, and clutch to complete limp control, and can prompt the user with the current fault status through the instrument.
[0039] Some embodiments of this application collect hydrogen cylinder equipment status parameters, determine the fault type and corresponding fault level of the hydrogen cylinder itself based on these parameters, and send the fault type and fault level to the vehicle control module. The vehicle control module determines the corresponding target fault handling strategy based on the fault type and fault level, thereby controlling the corresponding module to perform the operation. This allows for timely understanding of the fault level of the hydrogen cylinder and also determines the fault level of the entire vehicle. This not only effectively ensures vehicle safety and hydrogen system safety, but also accurately locates faults to guide troubleshooting, and ensures the limp-riding performance of hybrid vehicles.
[0040] Another embodiment of this application further supplements the vehicle hydrogen cylinder fault handling method provided in the above embodiments.
[0041] Optionally, the acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: Hydrogen leak detectors are used to collect hydrogen concentration data. The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
[0042] The data acquisition module is connected to the hydrogen cylinder control module, which in turn is connected to the overall machine control module. Various sensors in the acquisition module collect relevant parameters, such as hydrogen concentration, sensor power supply voltage, sensor operating voltage and pressure values, and temperature values. The acquisition module sends these parameters to the hydrogen cylinder control module, which then generates a fault type and fault level based on these parameters and sends the fault type and fault level to the overall machine control module.
[0043] Some embodiments of this application can detect hydrogen cylinders from multiple aspects by setting up multiple different types of sensors, such as hydrogen leak detectors, hydrogen cylinder pressure sensors, and hydrogen cylinder temperature sensors, thereby improving the diversity of hydrogen cylinder detection.
[0044] Optionally, the target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leak fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault. Specifically, the data collected by the hydrogen cylinder control module is used to determine the corresponding fault type and fault level. For example, the power supply voltage of the hydrogen cylinder pressure sensor is checked. If the power supply voltage is below the threshold, i.e., less than the preset value, the fault location is determined to be the sensor location, and the fault level is level 2. Other fault judgment rules are shown in Table 1.
[0045] in: The condition for diagnosing fault 1 is: the power supply voltage of the hydrogen cylinder pressure sensor is <4.7V; The condition for diagnosing fault 2 is: the power supply voltage of the hydrogen cylinder pressure sensor > 5.2V; The condition for diagnosing fault 3 is: the voltage of the hydrogen cylinder pressure sensor is <0.2V; The condition for diagnosing fault 4 is: the voltage of the hydrogen cylinder pressure sensor > 4.7V; The condition for diagnosing fault 5 is: the voltage of the hydrogen cylinder temperature sensor is <0.17V; The criteria for determining fault 6 are: the voltage of the hydrogen cylinder temperature sensor > 4.675V; The criteria for fault 7 are: HMS detects that the hydrogen leak detector has no signal, short circuit, or open circuit. The criteria for fault 8 are: HMS detects a Checksum fault, Livecounter fault, Timeout fault, or vehicle bus off in the EMS message; The condition for malfunction 9 is: the hydrogen cylinder pressure exceeds the maximum upper limit (pressure ≥ 75 MPa). The criteria for fault 10 are: the hydrogen cylinder pressure exceeds the upper limit (75 MPa > pressure ≥ 72 MPa). The criteria for fault 11 are: the hydrogen cylinder pressure is lower than the lower limit (2.5 MPa > pressure ≥ 2 MPa). The condition for diagnosing fault 12 is: the hydrogen cylinder pressure is lower than the minimum lower limit (pressure ≤ 2MPa). The condition for fault 13 is: the temperature of the hydrogen cylinder exceeds the maximum upper limit (temperature ≥ 85 degrees Celsius). The condition for malfunction 14 is: the temperature of the hydrogen cylinder exceeds the upper limit (85 degrees Celsius > temperature ≥ 80 degrees Celsius). The condition for determining fault 15 is: the detected hydrogen concentration does not exceed 1.6%; The criteria for fault 16 are: the detected hydrogen concentration is between 1.6% and 2%; The condition for malfunction 17 is: the detected hydrogen concentration exceeds 2%.
[0046] In some embodiments of this application, the hydrogen cylinder control module compares the collected sensor values with corresponding preset values to determine the fault type and fault location.
[0047] Optionally, based on a pre-set fault handling strategy, a target fault handling strategy corresponding to the target fault level is determined, including: If the target fault level is the first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and will coast to a stop.
[0048] For example, faults 12 and 15 have no impact on the safety of the hydrogen storage system and the power system of the hybrid vehicle, so they are defined as level 1 faults; faults 1-7, 10-11, 14, and 16 affect the safety of the hydrogen storage system and the operation of the engine, but since the hybrid vehicle has other power sources, it can still drive, so they are defined as level 2 faults; faults 8, 9, 13, and 17 affect the safety of the hydrogen storage system and the safety of the entire vehicle, so they are defined as level 3 faults.
[0049] Specifically, the system controller determines the target fault handling strategy corresponding to the target fault level, as shown below: When a Level 1 fault occurs, the hybrid vehicle is normally controlled to operate.
[0050] When a Level 2 fault occurs, the HCU sends a shutdown control command to the EMS and simultaneously controls the generator to shut down. After the EMS shuts down, it controls the HMS to close the hydrogen cylinder valve. The HCU then simultaneously controls the drive motor to continue outputting torque, and the vehicle limps in pure electric mode.
[0051] When a Level 3 fault occurs, the HCU controls the engine to shut down, the clutch to disengage, the motor torque to zero, and the generator torque to zero. Then, it controls the vehicle to cut off the high-voltage power, causing the vehicle to coast to a stop. This procedure primarily addresses the fault handling and control methods for various powertrain components in response to the consequences of the fault, aiming to ensure vehicle safety and the safety of passengers.
[0052] In some embodiments of this application, the vehicle control module diagnoses hydrogen tank faults not only by the faults of the components themselves, but also by the failures of the system. Based on the consequences of various faults, fault handling can not only effectively ensure vehicle safety and hydrogen system safety, but also accurately locate faults to guide troubleshooting, and ensure the limp-riding performance of hybrid vehicles.
[0053] Optionally, based on the target fault handling strategy, the corresponding module is controlled to perform handling operations, including: Based on the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle's limp operation.
[0054] In some embodiments of this application, after determining the fault level of the whole machine, the overall control module determines different fault handling strategies for different fault levels, and then controls different modules of the vehicle to perform corresponding operations. In this way, emissions can be avoided and vehicle driving safety can be guaranteed.
[0055] Optionally, the method further includes: Send a fault display command to the display module; Display the target fault information and alarm information according to the fault display command.
[0056] Specifically, the overall control module sends a fault display command to the display module. For a Level 3 fault, the HCU sends a command to the instrument panel, which displays the message "Serious fault in the hydrogen cylinder system. Please stop in a safe area and contact the 4S store." For Level 2 faults, there are three main scenarios: when a sensor fault occurs (faults 1-7), the HCU sends a command to the instrument panel, which displays the message "Hydrogen cylinder sensor fault, engine cannot work. Please drive to the 4S store as soon as possible." When a communication fault occurs (8), the HCU sends a command to the instrument panel, which displays the message "Hydrogen cylinder communication fault, engine cannot work. Please drive to the 4S store as soon as possible." When a system fault occurs (faults 10, 11, 14, 16), the HCU sends a command to the instrument panel, which displays the message "Hydrogen cylinder system fault, engine cannot work. Please drive to the 4S store for repair as soon as possible." For a Level 1 fault, when fault 12 occurs, the HCU sends a command to the instrument panel, which displays the message "Hydrogen cylinder pressure is too low. Please add hydrogen as soon as possible."
[0057] Some embodiments of this application include a display module that displays target fault information and alarm information, allowing users to promptly understand the overall fault status of the vehicle and address the fault in a timely manner.
[0058] like Figure 3As shown, this invention relates to a method and apparatus for handling hydrogen tank malfunctions in a hybrid vehicle equipped with a hydrogen fuel cell engine. The hydrogen tank controller (HMS) collects data from a hydrogen leak detector, a hydrogen tank pressure sensor, and a hydrogen tank temperature sensor. Based on the sensor status and its own status, it determines sensor malfunctions and system malfunctions, and feeds back the status and malfunction status to the EMS and HCU via the CAN bus. The EMS sends hydrogen tank valve control commands to the HMS based on the hydrogen tank status and malfunction status, controlling the opening and closing of the hydrogen tank valves. The HCU obtains hydrogen tank system malfunction information via the CAN bus, analyzes the consequences of the malfunction, formulates a vehicle-level malfunction handling strategy, and sends control commands to the motor system, battery system, engine system, and clutch to complete limp-riding control. It also sends malfunction alerts to the instrument panel to inform the user of the current malfunction status.
[0059] First, the HMS diagnoses various hydrogen cylinder-related faults, including sensor faults, communication faults, hydrogen leakage faults, hydrogen cylinder overpressure faults, and hydrogen cylinder overtemperature faults. Second, the HCU analyzes the impact of all faults on vehicle functions and classifies the faults according to their consequences. Finally, the HCU applies different fault handling strategies based on the fault category to ensure vehicle safety. Compared with previous patents, this invention identifies faults based on their root causes, including not only component faults but also system failure faults; it handles faults based on the consequences of various faults, which not only effectively ensures vehicle and hydrogen system safety and accurately locates faults to guide troubleshooting, but also ensures the limp-riding performance of hybrid vehicles.
[0060] like Figure 4 As shown in the embodiments of this application, the method for fault diagnosis and handling control of hydrogen tank systems in hybrid vehicles includes: S01: The HMS diagnoses various hydrogen cylinder-related faults, including sensor faults, communication faults, hydrogen leakage faults, hydrogen cylinder overpressure faults, and hydrogen cylinder overtemperature faults. The HMS identifies these faults and transmits them to the EMS and HCU via the CAN bus. S02: The HCU receives the fault status from the HMS, analyzes the impact of all faults on vehicle functions, and classifies faults according to their consequences.
[0061] S03: The HCU employs different fault handling strategies based on the fault category to ensure vehicle safety.
[0062] S04: The HCU sends display commands to the instrument panel via the CAN bus based on the final vehicle limp state and the cause of the malfunction. The instrument panel then prompts the driver on how to operate the vehicle and provides appropriate reminders to the driver so that the driver is aware of the vehicle's current status and the next steps.
[0063] It should be noted that each of the implementable methods in this embodiment can be implemented individually or in any combination without conflict. This application does not limit this.
[0064] Another embodiment of this application provides a vehicle hydrogen cylinder fault handling device for performing the vehicle hydrogen cylinder fault handling method provided in the above embodiment.
[0065] like Figure 5 The diagram shown is a structural schematic of a vehicle hydrogen cylinder fault handling device provided in an embodiment of this application. It is applied to the vehicle control module, which is connected to the hydrogen cylinder control module. The hydrogen cylinder control module is connected to the acquisition module. The vehicle hydrogen cylinder fault handling device includes a receiving unit 501, a determining unit 502, and a processing unit 503, wherein: The receiving unit 501 is used to receive the hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module. The target fault information includes at least the target fault type and the target fault level corresponding to the target fault type. The target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters. The determining unit 502 is used to determine a target fault handling strategy corresponding to the target fault level according to a preset fault handling strategy, wherein the preset fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. The processing unit 503 is used to control the corresponding module to perform processing operations according to the target fault handling strategy.
[0066] Some embodiments of this application collect hydrogen cylinder equipment status parameters, determine the fault type and corresponding fault level of the hydrogen cylinder itself based on these parameters, and send the fault type and fault level to the vehicle control module. The vehicle control module determines the corresponding target fault handling strategy based on the fault type and fault level, thereby controlling the corresponding module to perform the operation. This allows for timely understanding of the fault level of the hydrogen cylinder and also determines the fault level of the entire vehicle. This not only effectively ensures vehicle safety and hydrogen system safety, but also accurately locates faults to guide troubleshooting, and ensures the limp-riding performance of hybrid vehicles.
[0067] Regarding the apparatus in this embodiment, the specific manner in which each module performs its operations has been described in detail in the embodiments related to the method, and will not be elaborated upon here.
[0068] This application provides another embodiment to further illustrate the vehicle hydrogen cylinder fault handling device provided in the above embodiments.
[0069] Optionally, the acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: Hydrogen leak detectors are used to collect hydrogen concentration data. The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
[0070] Some embodiments of this application can detect hydrogen cylinders from multiple aspects by setting up multiple different types of sensors, such as hydrogen leak detectors, hydrogen cylinder pressure sensors, and hydrogen cylinder temperature sensors, thereby improving the diversity of hydrogen cylinder detection.
[0071] Optionally, the target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leak fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault. In some embodiments of this application, the hydrogen cylinder control module compares the collected sensor values with corresponding preset values to determine the fault type.
[0072] Optionally, a unit is defined for: If the target fault level is the first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and will coast to a stop.
[0073] In some embodiments of this application, the vehicle control module diagnoses hydrogen tank faults not only by the faults of the components themselves, but also by the failures of the system. Based on the consequences of various faults, fault handling can not only effectively ensure vehicle safety and hydrogen system safety, but also accurately locate faults to guide troubleshooting, and ensure the limp-riding performance of hybrid vehicles.
[0074] Optionally, the processing unit is used for: Based on the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle's limp operation.
[0075] In some embodiments of this application, after determining the fault level of the whole machine, the overall control module determines different fault handling strategies for different fault levels, and then controls different modules of the vehicle to perform corresponding operations. In this way, emissions can be avoided and vehicle driving safety can be guaranteed.
[0076] Optionally, the processing unit is used for: Send a fault display command to the display module; Display the target fault information and alarm information according to the fault display command.
[0077] Some embodiments of this application include a display module that displays target fault information and alarm information, allowing users to promptly understand the overall fault status of the vehicle and address the fault in a timely manner.
[0078] It should be noted that each of the implementable methods in this embodiment can be implemented individually or in any combination without conflict. This application does not limit this.
[0079] This application also provides a vehicle for performing the vehicle hydrogen cylinder failure handling method of any of the above embodiments.
[0080] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0081] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0082] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A method for handling vehicle hydrogen cylinder malfunctions, characterized in that, The method, applied to a vehicle control module connected to a hydrogen tank control module and connected to a data acquisition module, includes: The system receives hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module. The target fault information includes at least a target fault type and a target fault level corresponding to the target fault type. The target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters. Based on a pre-set fault handling strategy, a target fault handling strategy corresponding to the target fault level is determined, wherein the pre-set fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. According to the target fault handling strategy, control the corresponding module to perform processing operations.
2. The vehicle hydrogen cylinder malfunction handling method according to claim 1, characterized in that, The acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: The hydrogen leak detector is used to collect hydrogen concentration; The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
3. The vehicle hydrogen cylinder malfunction handling method according to claim 2, characterized in that, The target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leakage fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault.
4. The vehicle hydrogen cylinder malfunction handling method according to claim 1, characterized in that, The step of determining the target fault handling strategy corresponding to the target fault level according to the pre-set fault handling strategy includes: If the target fault level is a first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and coasts to a stop.
5. The vehicle hydrogen cylinder malfunction handling method according to claim 1, characterized in that, The step of controlling the corresponding module to perform processing operations according to the target fault handling strategy includes: According to the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle to limp.
6. The vehicle hydrogen cylinder malfunction handling method according to claim 1, characterized in that, The method further includes: Send a fault display command to the display module; According to the fault display instruction, the target fault information and alarm information are displayed.
7. A vehicle hydrogen cylinder malfunction handling device, characterized in that, The device is applied to a vehicle control module, which is connected to a hydrogen tank control module, and the hydrogen tank control module is connected to a data acquisition module. The device includes: A receiving unit is configured to receive hydrogen cylinder equipment status parameters and target fault information sent by the hydrogen cylinder control module, wherein the target fault information includes at least a target fault type and a target fault level corresponding to the target fault type, and the target fault information is determined by the hydrogen cylinder control module based on the hydrogen cylinder equipment status parameters; The determining unit is configured to determine a target fault handling strategy corresponding to the target fault level based on a pre-set fault handling strategy, wherein the pre-set fault handling strategy includes at least a fault level and a fault handling strategy corresponding to the fault level. The processing unit is used to control the corresponding module to perform processing operations according to the target fault handling strategy.
8. The vehicle hydrogen cylinder fault handling device according to claim 7, characterized in that, The acquisition module includes at least a hydrogen leak detector, a hydrogen cylinder pressure sensor, and a hydrogen cylinder temperature sensor, wherein: The hydrogen leak detector is used to collect hydrogen concentration; The hydrogen cylinder pressure sensor is used to collect sensor power supply voltage, sensor voltage, and pressure value; The hydrogen cylinder temperature sensor is used to collect temperature values.
9. The vehicle hydrogen cylinder fault handling device according to claim 7, characterized in that, The target fault type includes at least one or more of the following: sensor fault, communication fault, hydrogen leakage fault, hydrogen cylinder overpressure fault, or hydrogen cylinder overtemperature fault.
10. The vehicle hydrogen cylinder fault handling device according to claim 7, characterized in that, The determining unit is used for: If the target fault level is a first preset level, then the target fault handling strategy corresponding to the first preset level is to control the operation of the hybrid vehicle normally. If the target fault level is the second preset level, the target fault handling strategy corresponding to the second preset level is to send a shutdown control command to the engine management module and simultaneously control the generator to shut down. After the engine management module shuts down, the hydrogen tank control module is controlled to close the hydrogen tank valve, and the drive motor is controlled to continue to output torque, so that the vehicle can limp in pure electric mode. If the target fault level is the third preset level, the target fault handling strategy corresponding to the third preset level is to control the engine to stop, the clutch to disengage, the motor torque to zero, the generator torque to zero, and control the vehicle to cut off the high voltage, so that the vehicle cannot move and coasts to a stop.
11. The vehicle hydrogen cylinder fault handling device according to claim 7, characterized in that, The processing unit is used for: According to the target fault handling strategy, control commands are sent to the motor module, battery module, engine module and clutch respectively to control the vehicle to limp.
12. A vehicle, characterized in that, Used to perform the vehicle hydrogen cylinder failure handling method as described in any one of claims 1-6.