Shutdown method, device and equipment of fuel cell, vehicle and medium

Abstract

The embodiment of the invention relates to a shutdown method, device and equipment of a fuel cell, a vehicle and a medium. The method includes receiving a fault indication signal indicating whether a fault occurs in the vehicle. The method further comprises the step of responding to the fault indication signal to indicate that the vehicle breaks down, and obtaining the vehicle speed of the vehicle. Further, the method includes sending a shutdown command to the fuel cell based on the vehicle speed and a speed threshold, where the speed threshold is a threshold that triggers high voltage power down of the vehicle. According to the fuel cell shutdown scheme disclosed by the embodiment of the invention, the shutdown instruction for the fuel cell can be sent according to the vehicle speed, and the situation that the fuel cell is immediately subjected to emergency shutdown when a fault occurs is avoided, so that the emergency shutdown of the fuel cell is optimized, the influence of the emergency shutdown on the fuel cell is reduced, and the service life of the fuel cell is prolonged.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the field of vehicle control, and more particularly, to a shutdown method, device, equipment, vehicle, and medium for a fuel cell. Background Art

[0002] As the forefront of clean energy technology, fuel cells have made significant progress in the automotive field. Its basic principle is to generate electrical energy through the electrochemical reaction of hydrogen and oxygen, releasing water vapor as the only emission. Fuel cell vehicles have advantages such as zero emissions, high efficiency, and low noise. With the continuous advancement of renewable energy, fuel cell vehicles are gradually becoming the leading choice for future sustainable transportation.

[0003] The shutdown technology of fuel cells is crucial to ensure system safety and performance. The shutdown system monitors parameters such as battery temperature, pressure, and hydrogen leakage to achieve timely shutdown and protection of the vehicle. The shutdown system is tightly integrated with the vehicle control system to ensure that corresponding measures are taken promptly in case of an emergency, improving the overall safety of the vehicle. Summary of the Invention

[0004] Embodiments of the present disclosure provide a shutdown method, device, equipment, vehicle, and medium for a fuel cell.

[0005] According to a first aspect of the present disclosure, there is provided a shutdown method for a fuel cell. The method includes receiving a fault indication signal indicating whether a vehicle has a fault. The method further includes, in response to the fault indication signal indicating that the vehicle has a fault, obtaining the vehicle speed. Additionally, the method further includes sending a shutdown instruction to the fuel cell based on the vehicle speed and a speed threshold, where the speed threshold is a threshold for triggering high-voltage power-off of the vehicle.

[0006] According to a second aspect of the present disclosure, there is provided a shutdown device for a fuel cell. The device includes an indication signal receiving unit configured to receive a fault indication signal indicating whether a vehicle has a fault. The device further includes a vehicle speed obtaining unit configured to obtain the vehicle speed in response to the fault indication signal indicating that the vehicle has a fault. Additionally, the device further includes a shutdown instruction sending unit that sends a shutdown instruction to the fuel cell based on the vehicle speed and a speed threshold, where the speed threshold is a threshold for triggering high-voltage power-off of the vehicle.

[0007] According to a third aspect of the present disclosure, there is provided an electronic device. The electronic device includes at least one processor; and a memory coupled to the at least one processor and having instructions stored thereon that, when executed by the at least one processor, cause the device to perform the steps of the method in the first aspect of the present disclosure.

[0008] According to a fourth aspect of the present disclosure, a vehicle is provided, which includes the electronic device in the third aspect of the present disclosure.

[0009] According to a fifth aspect of the present disclosure, a machine-readable storage medium is provided. Machine-executable instructions are stored on the machine-readable storage medium, and when the machine-executable instructions are executed by a processor, the steps of the method in the first aspect of the present disclosure are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] By describing the exemplary embodiments of the present disclosure in more detail in conjunction with the accompanying drawings, the above and other objects, features, and advantages of the present disclosure will become more apparent. Among them, in the exemplary embodiments of the present disclosure, the same reference numerals generally represent the same components.

[0011] Figure 1 A schematic diagram illustrating an example environment in which an apparatus and / or method according to an embodiment of the present disclosure may be implemented;

[0012] Figure 2 A flowchart illustrating a method for shutting down a fuel cell according to an embodiment of the present disclosure;

[0013] Figure 3 A schematic diagram illustrating a high-voltage fault response scheme according to an embodiment of the present disclosure;

[0014] Figure 4 A schematic diagram illustrating the software logic for emergency shutdown of a fuel cell according to an embodiment of the present disclosure;

[0015] Figure 5 A schematic diagram illustrating a shutdown device for a fuel cell according to an embodiment of the present disclosure; and

[0016] Figure 6 A schematic block diagram of an example device suitable for implementing an embodiment of the present disclosure.

[0017] In each of the drawings, the same or corresponding reference numerals denote the same or corresponding parts. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] It can be understood that the data involved in the technical solution (including but not limited to the data itself, the acquisition or use of the data) should comply with the requirements of the corresponding laws, regulations and related provisions.

[0019] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise specified, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. There may also be other explicit and implicit definitions hereinafter.

[0021] It should be noted that the numbers or numerical values used herein are for the convenience of understanding the technology of the present disclosure, rather than limiting the scope of the present disclosure.

[0022] When a vehicle equipped with a fuel cell receives a fault indication (such as a high-voltage fault), it will trigger a fault response of the whole vehicle, and then trigger an emergency shutdown of the fuel cell. However, the emergency shutdown of the fuel cell will omit some normal shutdown steps. For example, during normal shutdown, the fuel cell will be purged to purge water and the like in the fuel cell. The omission of the purge step in the emergency shutdown of the fuel cell will affect the cold start of the fuel cell, reduce the service life of the fuel cell, and is not conducive to the long-term use of the fuel cell.

[0023] For this reason, the embodiments of the present disclosure propose a shutdown scheme for a fuel cell. This scheme first receives a fault indication signal indicating whether the vehicle has a fault. If the fault indication signal indicates that the vehicle has a fault, then it obtains the vehicle speed, and then sends a shutdown instruction to the fuel cell according to the vehicle speed and a speed threshold. Here, the speed threshold is the threshold for triggering the high-voltage power-off of the vehicle. Through the scheme proposed by the present disclosure, the shutdown instruction can be sent according to the vehicle speed, avoiding immediately performing an emergency shutdown of the fuel cell when a fault occurs, thereby optimizing the emergency shutdown of the fuel cell, reducing the impact of the emergency shutdown on the fuel cell, and increasing the service life of the fuel cell.

[0024] The embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings, where Figure 1 shows an example environment in which the devices and / or methods of the embodiments of the present disclosure can be implemented.

[0025] As Figure 1As shown, the example environment 100 includes a vehicle 102. The vehicle 102 can be a new energy vehicle equipped with a fuel cell 120, and the vehicle 102 includes a controller 104. The controller 104 is used to send a shutdown instruction to the fuel cell 120. In some embodiments, the controller 104 can be a vehicle controller. For example, the vehicle controller controls the driving of the vehicle 102 and coordinates the normal operation of each subsystem of the vehicle 102; the vehicle controller can perform fault detection and diagnosis, and the vehicle controller monitors the real-time operation state of the vehicle, alarms in time, takes safety measures and sends error codes when a fault occurs to ensure the safe driving of the vehicle; in addition, the vehicle controller of the vehicle 102 has a protection function, and protects the vehicle according to the type of fault that occurs, and can take necessary measures for safety protection in case of emergency to prevent extreme situations from occurring. In some embodiments, the controller 104 can be implemented by any suitable computing device, including but not limited to a personal computer, a mobile device, a multi-processor system, a consumer electronic product, a small computer, a distributed computing environment including any one of the above systems or devices, etc.

[0026] In Figure 1 , the controller 104 includes a fault signal receiving unit 112. In some embodiments, the controller 104 monitors the working information of each component of the vehicle 102 according to the sensors in the vehicle 102. After analysis and judgment by the controller 104, it determines whether a fault has occurred, and transmits the fault signal to the fault signal receiving unit 112 when a fault occurs. In addition, in some embodiments, the fault signal receiving unit 112 can be at a high level when the vehicle 102 is normal (for example, indicating 1 in the code instruction), and at a low level when the vehicle 102 has a fault, to indicate that the vehicle 102 currently has a fault. In addition, in some embodiments, the fault signal receiving unit 112 can be at a low level when the vehicle 102 is normal, and at a high level when the vehicle 102 has a fault, to indicate that the vehicle 102 currently has a fault.

[0027] In Figure 1 , the controller 104 further includes a vehicle speed acquisition unit 114. The vehicle speed acquisition unit 114 can be used to acquire the current vehicle speed of the vehicle 102. In some embodiments, the vehicle speed acquisition unit 114 can be a speed sensor, and the speed sensor is used to acquire the current vehicle speed of the vehicle 102. In some embodiments, the vehicle speed acquisition unit 114 can acquire the position information of the vehicle through the Global Positioning System (GPS), and acquire the current vehicle speed of the vehicle 102 according to the position changes at different times. In some embodiments, the vehicle speed acquisition unit 114 uses vehicle network communication, and acquires the speed information of surrounding vehicles through the communication between the vehicle 102 and road infrastructure or other vehicles to determine the current vehicle speed of the vehicle 102. In addition, there are other methods to acquire the current vehicle speed of the vehicle 102, and the present disclosure does not limit this.

[0028] In addition, the controller 104 further includes a speed threshold configuration unit 116. The speed threshold configuration unit 116 can be used to configure a speed threshold, and the controller 104 can use this speed threshold to send a shutdown instruction to the fuel cell 120. In some embodiments, this speed threshold is the speed threshold for triggering the high-voltage power-off of the vehicle 102. For example, after the vehicle 102 detects a high-voltage fault, due to the high-voltage risk, high-voltage power-off is required. However, there is a driving risk when performing a vehicle-wide high-voltage power-off during driving. Therefore, it is necessary to trigger the high-voltage power-off at a certain speed threshold. For example, the controller 104 can issue a high-voltage power-off instruction. However, if the high-voltage power-off is performed when the vehicle 102 is moving too fast, it may cause a series of control systems such as the steering system to fail. Therefore, it is necessary to trigger the high-voltage power-off at a certain speed threshold (for example, 5 kilometers per hour), otherwise the vehicle 102 will lose control. In some embodiments, this speed threshold can be configured by the controller 104, and the configured speed threshold can be greater than the speed value for triggering the high-voltage power-off.

[0029] Continuing to refer to Figure 1 , the controller 104 further includes a shutdown instruction sending unit 118. The shutdown instruction sending unit 118 can send a shutdown instruction to the fuel cell 120 based on the current speed of the vehicle 102 and the speed threshold. Here, sending a shutdown instruction to the fuel cell means sending a shutdown instruction to the fuel cell engine to stop the fuel cell engine through the shutdown instruction. In some embodiments, the shutdown instruction sending unit 118 can send a shutdown instruction to the fuel cell 120 by comparing the current vehicle speed and the speed threshold. For example, the shutdown instruction can include a normal shutdown instruction and an emergency shutdown instruction. Inside the fuel cell 120, there are usually hydrogen pipelines and air pipelines. Hydrogen is introduced into the stack through the hydrogen pipeline, and air is introduced into the stack through the air pipeline. Hydrogen and oxygen in the air react in the stack to generate electric energy and produce by-product water. The water generated during the reaction of the fuel cell 120 will be discharged together with the tail gas. When receiving the normal shutdown instruction, the fuel cell 120 will first perform a purge, and then completely shut down after removing the residual water. However, when the fuel cell 120 receives the emergency shutdown instruction, it will shut down directly without performing a purge, then the residual water will accumulate inside the fuel cell, which may cause the fuel cell 120 to not start smoothly next time. For example, when the ambient temperature is low, it may freeze and cause the fuel cell to not start smoothly. In addition, the remaining fuel gas and oxidant gas can damage the electrode catalyst and the catalyst support through the electrolyte membrane, thereby shortening the service life of the fuel cell 120.

[0030] The above has been combined with Figure 1 to describe the block diagram of the example system 100 in which the embodiments of the present disclosure can be implemented. Next, in combination with Figure 2A flowchart describing a method for shutting down a fuel cell according to an embodiment of the present disclosure.

[0031] As Figure 2 shown, at block 202, a fault indication signal indicating whether a vehicle has a fault is received. For example, referring to Figure 1 , the fault indication signal can be received by a fault signal receiving unit 112, and this fault indication signal can indicate whether the vehicle 102 has a fault. In some embodiments, the fault signal receiving unit 112 can receive a high-voltage fault indication signal to indicate that the current vehicle 102 has a high-voltage fault. In some embodiments, the fault signal receiving unit 112 can receive an insulation fault indication signal to indicate that the current vehicle 102 has an insulation fault.

[0032] At block 204, in response to the fault indication signal indicating that the vehicle has a fault, the vehicle speed is obtained. For example, referring to Figure 1 , in response to the fault indication signal indicating that the vehicle 102 has a fault, the vehicle speed of the vehicle 102 can be obtained. In some embodiments, in response to the fault indication signal indicating that the vehicle 102 has a high-voltage fault, the vehicle speed of the vehicle 102 can be obtained, and then different types of shutdown instructions can be triggered according to different vehicle speeds. In some embodiments, in response to the fault indication signal indicating that the vehicle 102 has an insulation fault, the vehicle speed of the vehicle 102 can be obtained.

[0033] At block 206, based on the vehicle speed and a speed threshold, a shutdown instruction is sent to the fuel cell, where the speed threshold is a threshold for triggering the high-voltage power-off of the vehicle. For example, referring to Figure 1 , based on the vehicle speed and the speed threshold, a shutdown instruction is sent to the fuel cell 120, and this speed threshold is a threshold for triggering the high-voltage power-off of the vehicle 102. For example, when the vehicle 102 has a fault and needs to perform high-voltage power-off, the vehicle speed of the vehicle 102 needs to be reduced to 5 km / h to trigger the high-voltage power-off and achieve the high-voltage power-off of the whole vehicle. Otherwise, an accident may occur. For example, if the high-voltage power-off of the vehicle is performed when the vehicle speed is high, it may cause the vehicle control system to get out of control, and then lead to a safety accident. Since the whole vehicle cannot be subjected to high-voltage power-off when the speed of the vehicle 102 is higher than the speed threshold, it is not necessary to require the fuel cell to perform an emergency shutdown. Instead, a normal shutdown can be performed first. When the speed drops below the speed threshold and the whole vehicle can be subjected to high-voltage power-off, an emergency shutdown instruction is sent to the fuel cell.

[0034] Thus, through the method 200 according to an embodiment of the present disclosure, the shutdown instruction can be sent based on the vehicle speed, avoiding immediately performing an emergency shutdown of the fuel cell when a fault occurs. In this way, the emergency shutdown of the fuel cell can be optimized, the impact of the emergency shutdown on the fuel cell can be reduced, and the service life of the fuel cell can be improved.

[0035] Figure 3 FIG. shows a schematic diagram of a high - voltage fault response scheme 300 according to an embodiment of the present disclosure. As Figure 3 shown, the broken line 310 indicates whether the vehicle is in a high - voltage state. For example, when the broken line 310 is at a high level, it indicates that the vehicle is in a high - voltage state; when the broken line 310 is at a low level, it indicates that the vehicle is not in a high - voltage state. At point 312, the vehicle performs high - voltage power - on and enters the high - voltage state. For example, when an electric vehicle starts, it needs to perform high - voltage power - on on the in - vehicle high - voltage devices inside, that is, load the high - voltage of the power battery onto the in - vehicle high - voltage devices. When performing high - voltage power - on, the high - voltage of the power battery needs to be slowly loaded onto the in - vehicle high - voltage devices.

[0036] As Figure 3 shown, the broken line 320 indicates whether the vehicle speed is greater than the threshold speed. For example, when the broken line 320 is at a high level, it indicates that the vehicle speed is greater than the threshold speed; when the broken line 320 is at a low level, it indicates that the vehicle speed is not greater than the threshold speed. As mentioned above, this threshold speed is the speed at which the vehicle triggers high - voltage power - off. Since the vehicle needs to perform vehicle - wide high - voltage power - off when a high - voltage fault occurs, however, when the vehicle speed is greater than the speed threshold, performing vehicle - wide high - voltage power - off will cause the vehicle to lose control, such as the steering system losing control, etc. Therefore, it is necessary to perform vehicle - wide high - voltage power - off when the vehicle speed is lower than the speed threshold. For example, the speed threshold can be 5 km / h. At this time, because the vehicle speed is low, performing high - voltage power - off at this time can avoid safety accidents. At point 322, the vehicle speed is greater than the threshold speed. For example, after the vehicle undergoes high - voltage power - on and starts to accelerate, the speed at point 322 is greater than 5 km / h.

[0037] Continuing to refer to Figure 3 , the broken line 330 indicates whether the fuel cell is running. For example, when the broken line 330 is at a high level, it indicates that the fuel cell is running; when the broken line 330 is at a low level, it indicates that the fuel cell has stopped running. For example, at point 332, the fuel cell starts to run. The fuel cell generates electric energy by converting fuel into an electron flow. In the conversion process, there is a process of energy transfer, that is, the energy of the fuel is transferred to electrons to generate current. When the fuel cell is running, reactants are usually delivered to the fuel cell. When the reactants are delivered to the electrodes, an electrochemical reaction will occur. The electrochemical reaction will generate or consume ions and electrons. The ions generated at the anode will be consumed at the cathode, and the reaction products are discharged from the fuel cell, and then the fuel cell outputs electric energy to the outside. In addition to electric energy, the fuel cell also generates water. If the generated water is not discharged in time, it will gradually accumulate in the fuel cell and prevent new fuel and oxides from reacting.

[0038] As Figure 3As shown, the broken line 340 indicates whether there is a high-voltage fault in the vehicle. For example, when the broken line 340 is at a low level, it indicates that the vehicle is operating normally; when the broken line 340 is at a high level, it indicates that the vehicle has a high-voltage fault. For example, high-voltage faults can include but are not limited to high-voltage insulation faults, high-voltage interlock faults, etc. Refer to Figure 3 , the point 342 indicates that the vehicle has a high-voltage fault, such as a high-voltage interlock fault. When the vehicle has a high-voltage interlock fault, the main fault response handling measures can include but are not limited to: (1) recording the fault code; (2) high-voltage system fault light; (3) limp-home and torque limit; (4) high voltage under the driving model; (5) sending a shutdown instruction to the fuel cell; (6) prohibiting high-voltage power-on, etc.

[0039] At the point 342, when the vehicle has a high-voltage fault, it can trigger the normal shutdown of the fuel cell, as shown at the point 334. At this time, due to the high-voltage fault, it is necessary to execute high voltage under the driving mode. However, since the vehicle speed cannot quickly drop below the speed threshold (for example, 5 km / h), the vehicle cannot be powered off under high voltage. Therefore, the normal shutdown of the fuel cell can be triggered at the point 334, and the vehicle control unit can send a normal shutdown instruction to the fuel cell. At this time, the fuel cell can first perform a purging action to remove the residual water to avoid water accumulation inside the fuel cell.

[0040] At the same time, while the fuel cell is shutting down normally, the vehicle speed will also gradually decrease. At the point 324, the vehicle speed is lower than the speed threshold. For example, at the point 324, the vehicle speed is lower than 5 km / h. When the vehicle speed is lower than the speed threshold, it simultaneously triggers the high-voltage power-off of the vehicle (i.e., the point 314) and the emergency shutdown of the fuel cell (i.e., the point 336). For example, at the point 314, the vehicle triggers the high-voltage power-off, and at this time the vehicle control unit can send a vehicle-wide high-voltage power-off instruction. In addition, in some embodiments, the emergency shutdown of the fuel cell can trigger the high-voltage power-off of the vehicle. When the vehicle speed is lower than the speed threshold, the vehicle can be powered off under high voltage. At this time, since the vehicle speed is low, even if the vehicle control system cannot be used due to the high-voltage power-off, no safety accident will occur.

[0041] At the point 336, the emergency shutdown of the fuel cell is triggered, and the vehicle control unit can send an emergency shutdown instruction to the fuel cell. In some embodiments, after the emergency shutdown instruction of the fuel cell is triggered, an emergency shutdown alarm can be sent to the driver to prompt the driver that the fuel cell has performed an emergency shutdown, facilitating subsequent operations on the fuel cell. Therefore, after the vehicle has a high-voltage fault, the normal shutdown of the fuel cell is first triggered (at the point 334). When the vehicle speed drops to the speed threshold (for example, 5 km / h), the high-voltage power-off of the vehicle and the emergency shutdown of the fuel cell are triggered (at the point 336). Then, between the points 334 and 336, a purging action can be performed on the fuel cell, and this time depends on the time when the vehicle speed drops to 5 km / h.

[0042] In addition, in some embodiments, since the fuel cell has completed the normal shutdown process before the vehicle speed drops to the speed threshold, there is no need to send an emergency shutdown instruction to the fuel cell when the speed drops to the speed threshold. For example, as shown by the broken line 350 in Figure 3 , which indicates whether the fuel cell is running. For example, when the broken line 350 is at a high level, it indicates that the fuel cell is running; when the broken line 350 is at a low level, it indicates that the fuel cell has stopped running. At point 342, when a high-voltage fault occurs in the vehicle, the normal shutdown of the fuel cell can be triggered, that is, at point 352, the normal shutdown of the fuel cell is triggered. Since the fuel cell has completed the normal shutdown at point 354, there is no need to send an emergency shutdown instruction to the fuel cell when the speed drops to the speed threshold (i.e., at point 324).

[0043] Thus, through the embodiments of the present disclosure, emergency shutdown of the fuel cell based on the vehicle speed can be performed under high-voltage faults. After a high-voltage fault occurs in the vehicle, when the vehicle speed is lower than the speed threshold, a normal shutdown instruction is sent to the fuel cell, and the fuel cell performs a purge operation; when the vehicle speed is lower than the speed threshold, an emergency shutdown instruction is sent to the fuel cell, and the fuel cell immediately shuts down. In this way, the fuel cell can be purged to remove residual water before the vehicle speed drops to the speed threshold, avoiding the fuel cell from not starting smoothly next time, and improving the service life of the fuel cell.

[0044] Figure 4 FIG. illustrates a schematic diagram of a software logic 400 for emergency shutdown of a fuel cell according to an embodiment of the present disclosure. As Figure 4 shown, at block 402, a fault occurs in the fuel cell and an emergency shutdown is required. For example, when the fuel cell fails to output power abnormally, the emergency shutdown of the fuel cell can be triggered. At this time, the fault signal is set to a low level, passed through the NOT logic of block 412, and then passed through the OR logic of block 420, an emergency shutdown instruction can be sent at block 422. At block 404, a fault occurs in the vehicle and an emergency shutdown of the fuel cell is required. For example, when a fault occurs in the motor controller, an emergency shutdown of the fuel cell is required. At this time, the fault signal is set to a high level, and through the OR logic of block 420, an emergency shutdown instruction can be sent at block 422.

[0045] At block 406, a high-voltage fault occurs and the vehicle needs to perform a high-voltage power-down. As described above, an emergency stop based on vehicle speed can be performed, setting the fault signal to low. After passing through the NOT logic at block 414, a high signal is obtained. At block 408, the current vehicle speed is obtained. At block 410, a speed threshold is obtained. In some embodiments, the speed threshold is the speed at which the vehicle's high-voltage power-down is triggered. For example, the speed threshold can be 5 km / h. In some embodiments, the speed threshold can be configured by the vehicle controller. Additionally, since an emergency stop command does not need to be sent to the fuel cell again if the normal shutdown of the fuel cell is completed before the vehicle speed drops to the threshold, a signal at block 424 is needed to determine whether the normal shutdown of the fuel cell is completed. At block 424, a signal indicating the completion of the normal shutdown of the fuel cell is obtained. If the normal shutdown is completed, the signal is high; if the normal shutdown is not completed, the signal is low, and the signal is inverted through the NOT logic at block 426. Therefore, if the output of block 426 is low (i.e., indicating the completion of the normal shutdown of the fuel cell), then the output of the AND logic at block 418 is low, meaning that no shutdown command needs to be sent to the fuel cell. At block 416, the vehicle speed is compared with the speed threshold. In response to the vehicle speed being less than the speed threshold, the AND logic is performed at block 418, and through the OR logic at block 420, an emergency stop command can be sent at block 422. Additionally, in some embodiments, after sending an emergency stop command to the fuel cell through block 422, an emergency stop alarm can be sent by the vehicle controller to inform the driver that the fuel cell has performed an emergency stop, facilitating subsequent maintenance operations on the fuel cell by the driver to increase the service life of the fuel cell.

[0046] Therefore, through the emergency stop software logic 400 according to the embodiments of the present disclosure, the emergency stop associated with vehicle speed is added. After a fault is reported, an emergency stop command will not be sent to the fuel cell until the vehicle speed is less than the threshold speed, avoiding immediately requesting the fuel cell to perform an emergency stop after a fault occurs, which may cause problems with the fuel cell.

[0047] Figure 5 FIG. shows a schematic diagram of a shutdown device for a fuel cell according to an embodiment of the present disclosure. The device 500 can be applied to the controller 104 and can include multiple modules for performing corresponding steps in the method 200 as Figure 2 discussed in. As Figure 5As shown, device 500 includes: an indication signal receiving unit 502 configured to receive a fault indication signal indicating whether a vehicle has a fault. The device further includes a vehicle speed acquisition unit 504 configured to acquire the vehicle speed in response to the fault indication signal indicating that the vehicle has a fault. In addition, the device further includes a shutdown instruction sending unit 506 configured to send a shutdown instruction to the fuel cell based on the vehicle speed and a speed threshold, where the speed threshold is a threshold for triggering a high-voltage power-off of the vehicle.

[0048] In some embodiments, the shutdown instruction sending unit 506 includes: a normal shutdown instruction sending unit configured to send a normal shutdown instruction to the fuel cell in response to the vehicle speed being greater than the speed threshold, where the normal shutdown instruction instructs the fuel cell to perform purging and then shut down.

[0049] In some embodiments, the normal shutdown instruction sending unit further includes: a current vehicle speed determination unit configured to determine whether the current vehicle speed of the vehicle is less than or equal to the speed threshold after sending the normal shutdown instruction to the fuel cell; a shutdown completion determination unit configured to determine whether the fuel cell has completed shutdown; and a first emergency shutdown instruction sending unit configured to send an emergency shutdown instruction to the vehicle in response to the current vehicle speed being less than or equal to the speed threshold and the fuel cell not having completed shutdown.

[0050] In some embodiments, the shutdown instruction sending unit 506 includes: a second emergency shutdown instruction sending unit configured to send an emergency shutdown instruction to the fuel cell in response to the vehicle speed being less than or equal to the speed threshold, where the emergency shutdown instruction instructs the fuel cell to shut down immediately.

[0051] In some embodiments, the device 500 further includes: a high-voltage power-off trigger unit configured to trigger a high-voltage power-off of the vehicle in response to sending the emergency shutdown instruction to the fuel cell.

[0052] In some embodiments, the indication signal receiving unit 502 includes: a second indication signal receiving unit configured to receive a fault indication signal; a signal high-level configuration unit configured to set the fault indication signal to a high level in response to the vehicle not having a fault; and a signal low-level configuration unit configured to set the fault indication signal to a low level in response to the vehicle having a fault.

[0053] In some embodiments, the fault indication signal includes a high-voltage fault indication signal, and the high-voltage fault indication signal includes at least one of the following: a high-voltage interlock fault indication signal; or a high-voltage insulation fault indication signal.

[0054] In some embodiments, the vehicle speed is obtained by a vehicle speed sensor.

[0055] In some embodiments, the speed threshold is configurable by a vehicle control unit.

[0056] In some embodiments, the apparatus 500 further includes: a high-voltage power-on holding unit configured to hold the high-voltage power-on of the vehicle in response to the vehicle speed of the vehicle being greater than the speed threshold.

[0057] In some embodiments, the apparatus 500 further includes: a shutdown alarm sending unit configured to send an emergency shutdown alarm of the fuel cell in response to sending the emergency shutdown instruction to the fuel cell.

[0058] Figure 6 A schematic block diagram of an example device 600 that can be used to implement embodiments of the present disclosure is shown. Figure 1 The controller 104 in can be implemented using the device 600. As shown, the device 600 includes a central processing unit (CPU) 601, which can execute various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) 602 or computer program instructions loaded from a storage unit 608 into a random access memory (RAM) 603. In the RAM 603, various programs and data required for the operation of the device 600 can also be stored. The CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0059] Multiple components in the device 600 are connected to the I / O interface 605, including: an input unit 606, such as a keyboard, a mouse, etc.; an output unit 607, such as various types of displays, speakers, etc.; a memory 608, such as a magnetic disk, an optical disc, etc.; and a communication unit 609, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 609 allows the device 600 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0060] The various processes and treatments described above, such as methods 300 and 400, can be executed by the processing unit 601. For example, in some embodiments, methods 300 and 400 can be implemented as computer software programs that are tangibly included in a machine-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program can be loaded and / or installed onto the device 600 via the ROM 602 and / or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the CPU 601, one or more actions of the methods 300 and 400 described above can be executed.

[0061] The present disclosure may be a method, apparatus, system, and / or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions thereon for performing various aspects of the present disclosure.

[0062] A computer-readable storage medium may be a tangible device that can retain and store instructions for use by an instruction execution device. A computer-readable storage medium may be, for example—but not limited to—an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disc (DVD), a memory stick, a floppy disk, a mechanically encoded device such as a punch card or raised structures in grooves having instructions stored thereon, and any suitable combination of the foregoing. The computer-readable storage medium as used herein is not construed as a transitory signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., an optical pulse through an optical fiber cable), or an electrical signal transmitted through a wire.

[0063] The computer-readable program instructions described herein may be downloaded to respective computing / processing devices from a computer-readable storage medium or may be downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network may include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in each computing / processing device.

[0064] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine - related instructions, microcode, firmware instructions, state - setting data, or source code or object code written in any combination of one or more programming languages, including object - oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as the "C" language or similar programming languages. The computer - readable program instructions may be executed entirely on the user's computer, partially on the user's computer, executed as a stand - alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider). In some embodiments, by using the state information of the computer - readable program instructions to customize an electronic circuit, such as a programmable logic circuit, a field - programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit can execute the computer - readable program instructions to implement various aspects of the present disclosure.

[0065] Aspects of the present disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer - readable program instructions.

[0066] These computer - readable program instructions can be provided to a processing unit of a general - purpose computer, a special - purpose computer, or other programmable data - processing apparatus to produce a machine such that the instructions, when executed by the processing unit of the computer or other programmable data - processing apparatus, result in an apparatus that implements the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer - readable program instructions can also be stored in a computer - readable storage medium, which causes a computer, a programmable data - processing apparatus, and / or other devices to operate in a particular manner, so that the computer - readable medium storing the instructions includes a manufacture that includes instructions for implementing various aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0067] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device, causing a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process such that the instructions executed on the computer, other programmable data processing apparatus, or other device implement the functions / acts specified in one or more boxes of the flowchart and / or block diagram.

[0068] The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of code, or a portion of an instruction, which contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two consecutive blocks may in fact be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or acts, or by a combination of dedicated hardware and computer instructions.

[0069] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable other ordinary skilled artisans in the art to understand the embodiments disclosed herein.

Claims

1. A method for shutting down a fuel cell, comprising: receiving a fault indication signal indicating whether a vehicle has a fault; in response to the fault indication signal indicating that the vehicle has a fault, obtaining the vehicle speed; and based on the vehicle speed and a speed threshold, sending a shutdown instruction to the fuel cell, where the speed threshold is a threshold for triggering high-voltage power-off of the vehicle.

2. The method according to claim 1, wherein sending the shutdown instruction to the fuel cell comprises: in response to the vehicle speed being greater than the speed threshold, sending a normal shutdown instruction to the fuel cell, where the normal shutdown instruction instructs the fuel cell to perform purging and then shut down.

3. The method according to claim 2, further comprising: after sending the normal shutdown instruction to the fuel cell, determining whether the current vehicle speed of the vehicle is less than or equal to the speed threshold; determining whether the fuel cell has completed shutdown; and in response to the current vehicle speed being less than or equal to the speed threshold and the fuel cell not having completed shutdown, sending an emergency shutdown instruction to the vehicle.

4. The method according to claim 1, wherein sending the shutdown instruction to the fuel cell comprises: in response to the vehicle speed being less than or equal to the speed threshold, sending an emergency shutdown instruction to the fuel cell, where the emergency shutdown instruction instructs the fuel cell to shut down immediately.

5. The method according to claim 4, further comprising: in response to sending the emergency shutdown instruction to the fuel cell, triggering high-voltage power-off of the vehicle.

6. The method according to claim 1, wherein receiving a fault indication signal indicating whether a vehicle has a fault comprises: receiving a fault indication signal; in response to the vehicle not having a fault, setting the fault indication signal to a high level; and in response to the vehicle having a fault, setting the fault indication signal to a low level.

7. The method according to claim 4, wherein the fault indication signal includes a high-voltage fault indication signal, and the high-voltage fault indication signal includes at least one of the following: a high-voltage interlock fault indication signal; or a high-voltage insulation fault indication signal.

8. The method according to claim 4, wherein the vehicle speed is obtained by a vehicle speed sensor.

9. The method according to claim 4, wherein the speed threshold is configurable by a vehicle control unit.

10. The method according to claim 9, further comprising: in response to the vehicle speed of the vehicle being greater than the speed threshold, maintaining high-voltage power-on of the vehicle.

11. The method according to claim 9, further comprising: in response to sending the emergency shutdown instruction to the fuel cell, sending an emergency shutdown alarm of the fuel cell.

12. A shutdown device for a fuel cell, comprising: an indication signal receiving unit configured to receive a fault indication signal indicating whether a vehicle has a fault; a vehicle speed obtaining unit configured to obtain the vehicle speed in response to the fault indication signal indicating that the vehicle has a fault; and A shutdown instruction sending unit, based on the vehicle speed and a speed threshold, sends a shutdown instruction to the fuel cell, wherein the speed threshold is a threshold for triggering high-voltage power-off of the vehicle.

13. An electronic device, comprising: at least one processor; and a memory, coupled to the at least one processor and having instructions stored thereon, the instructions, when executed by the at least one processor, cause the device to perform the method according to any one of claims 1-11.

14. A vehicle comprising the electronic device according to claim 13.

15. A machine-readable storage medium having machine-executable instructions stored thereon, wherein the machine-executable instructions are executed by a processor to implement the method according to any one of claims 1 to 11.

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