A power supply method, device, system and computer storage medium of a railway vehicle

Abstract

This invention discloses a power supply method, device, system, and computer storage medium for rail vehicles, relating to the field of vehicle power supply. In implementing control, for the energy storage system, it is necessary to determine whether the energy storage system meets the conditions for entering the target operating state. If the conditions are met, a first control command is sent to the energy storage system to initiate the target operating state. Similarly, for the fuel cell system assembly, it is necessary to determine whether the fuel cell system assembly meets the conditions for entering the target operating state. If the conditions are met, a second control command is sent to the fuel cell system assembly to initiate the target operating state. By reasonably setting the conditions for entering the target operating state, the processor detects whether the two systems meet the conditions separately, and controls them to enter the target operating state when the conditions are met. Driver intervention is not required, improving the control efficiency of the high-voltage power supply system and enabling application in fully automated rail vehicles.

Description

Technical Field

[0001] This invention relates to the field of vehicle power supply, and in particular to a power supply method, apparatus, system, and computer storage medium for rail vehicles. Background Technology

[0002] The high-voltage power supply system of hydrogen-powered rail vehicles typically consists of three parts: an energy storage system, a fuel cell system assembly, and a DC / DC (Direct Current to Direct Current) system. The fuel cell system assembly obtains voltage from the energy storage system through the DC / DC system and charges the energy storage system via the DC / DC system. When the high-voltage power supply system is put into operation, the energy storage system and the fuel cell system assembly must be put into operation in a specific order. Since the operation of the fuel cell system assembly requires the energy storage system to be operational and establish a high-voltage bus first, the energy storage system must be put into operation before the fuel cell system assembly. Conversely, when shutting down, the fuel cell system assembly must be disconnected first, and then the energy storage system must be disconnected.

[0003] Currently, when controlling the activation or deactivation of high-voltage power supply systems, drivers typically activate energy storage and fuel cell systems manually, which results in low control efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a power supply method, device, system, and computer storage medium for rail vehicles, which eliminates the need for drivers to manually control the activation and deactivation of the energy storage system and fuel cell system assembly, thereby improving the control efficiency of the high-voltage power supply system.

[0005] To solve the above-mentioned technical problems, the present invention provides a power supply system control method for rail vehicles, comprising:

[0006] Determine whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state; wherein, the target operating state includes the activated state and the deactivated state;

[0007] If the first condition is met, a first control command is sent to the energy storage system so that the energy storage system enters the target working state;

[0008] If the first condition is not met, then the first control command will not be sent to the energy storage system;

[0009] Determine whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target working state;

[0010] If the second condition is met, a second control command is sent to the fuel cell system assembly so that the fuel cell system assembly enters the target working state;

[0011] If the second condition is not met, the second control command will not be sent to the fuel cell system assembly.

[0012] On the one hand, when the target operating state is the "in operation" state, it is determined whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state, including:

[0013] Determine whether the remaining electrical energy in the energy storage system is within a preset electrical energy range;

[0014] If so, determine that the first condition is met;

[0015] If not, it is determined that the first condition is not met.

[0016] On the one hand, the maximum value of the preset power range is less than 100%, and the minimum value of the preset power range is greater than 0%.

[0017] On the one hand, when the target operating state is the cut-out state, it is determined whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state, including:

[0018] Determine whether the fuel cell system assembly is in operation;

[0019] If not, the first condition is satisfied;

[0020] If so, it is determined that the first condition is not met.

[0021] On the one hand, when the target operating state is the "in operation" state, determining whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state includes:

[0022] Determine whether a self-test pass signal sent by the fuel cell system assembly has been received;

[0023] If the self-test pass signal is received, it is determined that the second condition is met;

[0024] If the self-test pass signal is not received, it is determined that the second condition is not met.

[0025] On the one hand, determining whether a self-test pass signal sent by the fuel cell system assembly has been received includes:

[0026] The self-test pass signal is sent by the control unit after determining whether the control unit in the fuel cell system assembly has performed fault detection on each unit in the fuel cell system assembly and determined that there are no faults affecting power supply control in each unit.

[0027] If so, determine that the self-test pass signal has been received;

[0028] If not, it is determined that the self-test pass signal was not received.

[0029] On the one hand, when the target operating state is the "in operation" state, determining whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state includes:

[0030] Determine whether the remaining hydrogen quantity in the hydrogen storage system of the fuel cell system assembly is within the preset hydrogen energy range;

[0031] If so, determine that the second condition is met;

[0032] If not, it is determined that the second condition is not met.

[0033] This application also provides a power supply system control device for a rail vehicle, comprising:

[0034] Memory, used to store computer programs;

[0035] A processor is used to execute the computer program to implement the steps of the power supply system control method for rail vehicles as described above.

[0036] This application also provides a power supply system for a rail vehicle, including a power supply system body and a power supply system control device for the rail vehicle as described above.

[0037] The power supply system body is connected to the power supply system control device of the rail vehicle.

[0038] This application also provides a computer storage medium storing a computer program, which, when executed by a processor, implements the steps of the power supply system control method for rail vehicles as described above.

[0039] The beneficial effects of this application are that it provides a power supply method, device, system, and computer storage medium for rail vehicles, relating to the field of vehicle power supply. In implementing control, for the energy storage system, it is necessary to determine whether the energy storage system meets the conditions for entering the target operating state. If the conditions are met, a first control command is sent to the energy storage system to cause it to enter the target operating state. Similarly, for the fuel cell system assembly, it is necessary to determine whether the fuel cell system assembly meets the conditions for entering the target operating state. If the conditions are met, a second control command is sent to the fuel cell system assembly to cause it to enter the target operating state. By reasonably setting the conditions for entering the target operating state, the processor detects whether the two systems meet the conditions respectively, and controls them to enter the target operating state when the conditions are met, without driver intervention, thus improving the control efficiency of the high-voltage power supply system and making it effectively applicable to fully automated driving vehicles. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A flowchart of a power supply system control method for a rail vehicle provided in this application;

[0042] Figure 2 A schematic diagram of the structure of a power supply system control system for a rail vehicle provided in this application;

[0043] Figure 3 This application provides a schematic diagram of the structure of a power supply system control device for a rail vehicle. Detailed Implementation

[0044] The core of this invention is to provide a power supply method, device, system, and computer storage medium for rail vehicles, which eliminates the need for drivers to manually control the activation and deactivation of the energy storage system and fuel cell system assembly, thereby improving the control efficiency of the high-voltage power supply system.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The high-voltage power supply system of hydrogen-powered rail vehicles consists of two parts: an energy storage system and a fuel cell system assembly. The operation of the fuel cell system assembly requires the energy storage system to operate first and establish a high-voltage bus. Therefore, the energy storage system must be put into operation before the fuel cell assembly is put into operation. When shutting down, the fuel cell system assembly must be disconnected first, and then the energy storage system must be disconnected.

[0047] In existing technologies, the energy storage system and fuel cell system are typically controlled manually by the driver to operate them separately. This method not only increases the amount of work required by the driver, but also cannot be applied to fully autonomous vehicles.

[0048] Please refer to Figure 1 , Figure 1A flowchart of a power supply system control method for a rail vehicle provided in this application includes:

[0049] S1: Determine whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state; where the target operating state includes the in-state and the out-of-state.

[0050] S2: If the first condition is met, send the first control command to the energy storage system so that the energy storage system can enter the target working state;

[0051] S3: If the first condition is not met, the first control command will not be sent to the energy storage system;

[0052] S4: Determine whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target working state;

[0053] S5: If the second condition is met, send a second control command to the fuel cell system assembly so that the fuel cell system assembly enters the target working state;

[0054] S6: If the second condition is not met, the second control command will not be sent to the fuel cell system assembly.

[0055] When vehicle operation needs to be controlled, the target operating state is "engaged". First, the vehicle is powered on and activated. After power-on, both the energy storage system and the fuel cell system assembly check their own status information and send the results to the processor. The processor determines whether both are ready to operate based on the status information sent by the energy storage system and the fuel cell system assembly. If both are ready, a first control command is sent to the energy storage system to activate it. After the energy storage system starts operating, a second control command is sent to the fuel cell system assembly to activate it as well. If only the energy storage system is ready, only the first control command is sent to it, and step S4 is continuously executed until the fuel cell system assembly is detected as ready. Only then is the second control command sent to the fuel cell system assembly. If the energy storage system is not ready, no control commands are sent to either because the fuel cell system assembly requires the energy storage system to operate first.

[0056] Similarly, when it is necessary to control the vehicle to stop, the target operating state is the cut-out state. The fuel cell system assembly can be cut out directly without conditions (for example, the second condition can be defined as the fuel cell system assembly being in an operating state); while the first condition for the energy storage system is to determine whether the fuel cell system assembly has been cut out. If the fuel cell system assembly has been cut out, it means that the energy storage system meets the first condition, and then the energy storage system is cut out. If the fuel cell system assembly has not been cut out, step S1 is continuously executed until the fuel cell system assembly is cut out, at which point the first control command is sent to the energy storage system.

[0057] In this way, in fully autonomous driving applications, since the vehicle's signaling system is always online, when this solution is applied to the signaling system's processor, it can automatically control vehicle movement and the switching on / off of the high-voltage power supply system, eliminating the need for driver intervention. This approach allows for the application of this solution in fully autonomous driving scenarios, significantly reducing driver workload and broadening its applicability compared to existing technologies that still require manual operation.

[0058] It should be noted that the first control command and the second control command refer to the commands that enable the energy storage system or fuel cell system assembly to enter the target working state.

[0059] Please refer to Figure 2 , Figure 2 This application provides a schematic diagram of the power supply system control system for a rail vehicle. In practical applications, the vehicle's control and management system is responsible for controlling the energy storage system and fuel cell system assembly. The vehicle is generally equipped with two train control and management systems, one as the master system and the other as the slave system. Under normal circumstances, the master system executes the task flow of this application; when the master system fails, the slave system takes over. Similarly, multiple systems can be configured for the fuel cell system assembly and energy storage system to operate simultaneously.

[0060] In summary, during control implementation, for the energy storage system, it is necessary to determine whether the energy storage system meets the conditions for entering the target operating state. If the conditions are met, a first control command is sent to the energy storage system to initiate the target operating state. Similarly, for the fuel cell system assembly, it is necessary to determine whether the fuel cell system assembly meets the conditions for entering the target operating state. If the conditions are met, a second control command is sent to the fuel cell system assembly to initiate the target operating state. By reasonably setting the conditions for entering the target operating state, the processor detects whether the two systems meet the conditions separately, and controls them to enter the target operating state when the conditions are met. This eliminates the need for driver intervention, improves the control efficiency of the high-voltage power supply system, and can be applied to fully automated rail vehicles.

[0061] Based on the above embodiments:

[0062] In some embodiments, when the target operating state is the in operation state, determining whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state includes:

[0063] Determine whether the remaining electrical energy in the energy storage system is within the preset electrical energy range;

[0064] If so, the first condition is satisfied;

[0065] If not, the first condition is not met.

[0066] To easily determine whether an energy storage system meets the first condition for normal operation, this application defines the first condition as whether the remaining amount of electrical energy stored in the energy storage system meets the requirements. It is understood that if the remaining electrical energy in the energy storage system is too low, it cannot support the vehicle's start-up acceleration, meaning it cannot accelerate from zero to a specified speed within a specified time. Therefore, a preset energy range is set based on the first condition. This preset energy range indicates that the remaining electrical energy in the energy storage system is sufficient to complete a start-up acceleration process. If the remaining electrical energy in the energy storage system is within the preset energy range, it means that the first condition is met. Furthermore, in certain special cases, considering that when the remaining electrical energy in the energy storage system is excessive, the electric braking power generated by the vehicle's braking may overcharge the energy storage system, potentially affecting the normal operation of the energy storage device and consequently the normal driving of the vehicle, the maximum value of the preset energy range needs to be set to less than 100%. Based on the above, the preset energy range can be set to 5% to 90% or an approximate range. By judging the remaining energy, it is easy to determine whether the energy storage system meets the first condition for normal operation.

[0067] In some embodiments, the maximum value of the preset power range is less than 100%, and the minimum value of the preset power range is greater than 0%.

[0068] In some embodiments, when the target operating state is a cut-off state, determining whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state includes:

[0069] Determine whether the fuel cell system assembly is in operation;

[0070] If not, the first condition is satisfied;

[0071] If so, the first condition is not met.

[0072] To simplify the determination of whether the energy storage system meets the first condition for switching off, this application, based on the above embodiments, shows that when the high-voltage power supply system shuts down, the fuel cell system assembly must be shut down first, followed by the energy storage system. Therefore, the first condition for the energy storage system can be defined as whether the fuel cell system assembly has already shut down. Based on this, by determining whether the fuel cell system assembly is still in operation, if so, it indicates that the fuel cell system assembly is still working normally and the energy storage system cannot be switched off; otherwise, it indicates that the fuel cell system assembly has shut down and the energy storage system can be switched off.

[0073] When determining whether a fuel cell system assembly is in operation, the assembly detects its current operating status and outputs this information. By collecting this output status information, it's possible to determine whether the fuel cell system is currently in operation. This method provides a simple way to determine if the energy storage system meets the first condition for switching off.

[0074] In some embodiments, when the target operating state is the engaged state, determining whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state includes:

[0075] Determine whether a self-test pass signal has been received from the fuel cell system assembly;

[0076] If a self-test pass signal is received, the second condition is determined to be met;

[0077] If no self-test pass signal is received, the second condition is deemed not met.

[0078] To determine whether a simple fuel cell system assembly meets the second condition for normal operation, please refer to the following in this application. Figure 2 , Figure 2 This application provides a schematic diagram of the power supply system control system for a rail vehicle. The fuel cell system assembly includes the fuel cell system itself, a cooling system, a hydrogen storage system, and an energy control unit. When the vehicle is powered on and activated, the fuel cell system, cooling system, and hydrogen storage system acquire their own status information and send it to the energy control unit. The energy control unit then determines whether other systems in the fuel cell system assembly are functioning normally. If all are functioning normally, a self-test pass signal is sent to the processor. Upon receiving the self-test pass signal, the processor determines that the fuel cell system assembly is functioning normally, satisfying the second condition. Furthermore, during normal vehicle operation, when the processor controls the fuel cell system assembly, it sends control commands to the energy control unit, which then distributes the control commands to the actual controlled systems.

[0079] Similarly, after the vehicle is powered on and activated, the energy storage system will also perform a self-test, and the result of the energy storage system passing the self-test will be used as part of the first condition.

[0080] The specific content of the self-test mainly includes whether the internal equipment voltage and current sensors, battery cell system, insulation detection and other functions are normal.

[0081] In summary, both the fuel cell system assembly and the energy storage system send their self-test results to the processor after the self-test. If the processor does not receive a command to put the vehicle into sleep mode, but the energy storage system's self-test result is successful and no cut-off command has been received, the processor will issue a first control command to the energy storage system to initiate normal operation. Upon receiving the first control command, the energy storage system will close the main positive and main negative contactors, establishing a high-voltage bus connection and sending a power-on completion status to the processor. At this point, the processor can confirm that the energy storage system is operating normally. If the fuel cell system assembly's self-test result is also successful and no cut-off command has been received, the processor will send a second control command to the fuel cell system assembly.

[0082] In some embodiments, determining whether a self-test pass signal is received from the fuel cell system assembly includes:

[0083] The self-test pass signal is sent by the control unit after it has performed fault detection on each unit in the fuel cell system assembly and determined that there are no faults affecting power supply control in each unit.

[0084] If so, determine that a self-test pass signal has been received;

[0085] If not, it is determined that no self-test pass signal was received.

[0086] To improve practicality, this application considers that the fuel cell system itself, cooling system, hydrogen storage system, and energy control unit in the fuel cell system assembly typically experience some faults during their life cycle. These faults can be categorized into multiple levels according to their severity. For some low-level faults, even their existence will not affect the function of the fuel cell system assembly or the normal operation of the vehicle. Therefore, when the processor determines whether the fuel cell system assembly meets the second condition, after the fuel cell system itself, cooling system, hydrogen storage system, and energy control unit send their self-test status information to the energy control unit, the energy control unit, when determining whether these systems' self-tests have passed, will consider the self-tests passed as long as there are no serious faults or faults affecting the power supply control function of the fuel cell system assembly, even if some minor faults exist. Finally, the energy control unit sends a self-test pass signal to the processor, enabling the processor to determine that the fuel cell system assembly meets the second condition. This approach improves practicality and versatility.

[0087] In addition, although minor system faults do not affect the self-test passing, in order to facilitate the staff to discover system faults, it is necessary to send the type of minor fault and the corresponding fault log to the vehicle's control and management system so that the staff can check the fault and carry out timely repairs and handling.

[0088] In some embodiments, when the target operating state is the engaged state, determining whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state includes:

[0089] Determine whether the remaining hydrogen quantity in the hydrogen storage system of the fuel cell system assembly is within the preset hydrogen energy range;

[0090] If so, the second condition is satisfied;

[0091] If not, the second condition is not met.

[0092] To clarify whether a simple fuel cell system assembly meets the second condition for normal operation, this application, based on the aforementioned embodiments, defines a hydrogen storage system within the fuel cell system assembly. The hydrogen storage system stores hydrogen and outputs it as fuel when needed. When the remaining hydrogen level in the storage system is too low, the fuel cell system assembly cannot provide power to the vehicle. Therefore, the remaining hydrogen level in the storage system is considered part of the second condition. Only when the remaining hydrogen level in the storage system is sufficient, and all other systems in the fuel cell system assembly pass their self-tests, can the fuel cell system assembly be considered to meet the second condition. The preset hydrogen energy range can be set based on the influence of the external environment on the hydrogen storage system, such as the effect of temperature. Since a certain level of low hydrogen level prevents the release of some remaining hydrogen, the lower limit of the preset hydrogen energy range needs to be greater than 0%. For example, the preset hydrogen energy range can be set to 5%–100%, with the lower limit adjusted according to actual conditions.

[0093] In summary, when vehicle operation needs to be controlled, five conditions must be met: First, the energy storage system meets the first condition, meaning the remaining electrical energy is within the preset range; second, the remaining hydrogen in the hydrogen storage system is within the preset range; third, both the hydrogen storage system and the fuel cell system have completed self-checks and there are no faults or serious malfunctions affecting power supply control; fourth, the driver or vehicle's signal system has not issued a command to stop the vehicle; and fifth, the driver or signal system has not issued a command to put the vehicle into hibernation mode. The processor in the vehicle's control and management system controls the hydrogen storage system and fuel cell system by automatically sending commands. The vehicle can only operate normally when all five conditions are met.

[0094] Conversely, if any of the above five conditions are not met, the processor will determine the target working state as the cut-out state, and then sequentially control the fuel cell system assembly and energy storage system to exit operation.

[0095] In addition, control buttons can be installed on the vehicle, allowing the driver to achieve the same function by pressing the buttons in certain special circumstances.

[0096] It should be noted that if you need to control the vehicle to sleep, you need to first shut down the fuel cell system assembly and the hydrogen storage system before performing the sleep operation.

[0097] Please refer to Figure 3 , Figure 3 A schematic diagram of a power supply system control device for a rail vehicle provided in this application includes:

[0098] Memory 21 is used to store computer programs;

[0099] The processor 22 is used to execute computer programs to implement the steps of the power supply system control method for rail vehicles as described above.

[0100] For a detailed description of the power supply system control device for rail vehicles provided in this application, please refer to the embodiments of the power supply system control method for rail vehicles described above; further details will not be repeated here.

[0101] This application also provides a power supply system for a rail vehicle, including a power supply system body and a power supply system control device for the rail vehicle as described above.

[0102] The power supply system itself is connected to the power supply system control device of the rail vehicle.

[0103] For a detailed description of the power supply system control system for rail vehicles provided in this application, please refer to the embodiments of the power supply system control method for rail vehicles described above; further details will not be repeated here.

[0104] This application also provides a computer storage medium storing a computer program, which, when executed by a processor, implements the steps of the power supply system control method for rail vehicles as described above.

[0105] For a detailed description of the computer storage medium provided in this application, please refer to the embodiments of the power supply system control method for rail vehicles described above; further details will not be repeated here.

[0106] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0107] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method for the power supply system of a rail vehicle, characterized in that, include: Determine whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state; wherein, the target operating state includes the engaged state and the disengaged state; if the first condition is met, send a first control command to the energy storage system so that the energy storage system enters the target operating state; If the first condition is not met, then the first control command will not be sent to the energy storage system; Determine whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target working state; If the second condition is met, a second control command is sent to the fuel cell system assembly so that the fuel cell system assembly enters the target operating state; wherein, the first control command and the second control command are respectively instructions to enable the energy storage system or the fuel cell system assembly to enter the target operating state; If the second condition is not met, the second control command will not be sent to the fuel cell system assembly; Correspondingly, when the target operating state is the "in operation" state, determining whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state includes: Determine whether the remaining electrical energy in the energy storage system is within a preset electrical energy range; If so, determine that the first condition is met; If not, it is determined that the first condition is not met; Correspondingly, when the target operating state is the cut-out state, determining whether the energy storage system in the high-voltage power supply system meets the first condition for entering the target operating state includes: Determine whether the fuel cell system assembly is in operation; If not, the first condition is satisfied; If so, it is determined that the first condition is not met; Correspondingly, when the target operating state is the "in operation" state, determining whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state includes: Determine whether a self-test pass signal sent by the fuel cell system assembly has been received; If the self-test pass signal is received, it is determined that the second condition is met; If the self-test pass signal is not received, it is determined that the second condition is not met.

2. The power supply system control method for rail vehicles as described in claim 1, characterized in that, The maximum value of the preset power range is less than 100%, and the minimum value of the preset power range is greater than 0%.

3. The power supply system control method for rail vehicles as described in claim 1, characterized in that, Determining whether a self-test pass signal has been received from the fuel cell system assembly includes: The self-test pass signal is sent by the control unit after determining whether the control unit in the fuel cell system assembly has performed fault detection on each unit in the fuel cell system assembly and determined that there are no faults affecting power supply control in each unit. If so, determine that the self-test pass signal has been received; If not, it is determined that the self-test pass signal was not received.

4. The power supply system control method for a rail vehicle as described in any one of claims 1 to 3, characterized in that, When the target operating state is the engaged state, it is determined whether the fuel cell system assembly in the high-voltage power supply system meets the second condition for entering the target operating state, including: Determine whether the remaining hydrogen quantity in the hydrogen storage system of the fuel cell system assembly is within the preset hydrogen energy range; If so, determine that the second condition is met; If not, it is determined that the second condition is not met.

5. A power supply system control device for a rail vehicle, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the steps of the power supply system control method for a rail vehicle as described in any one of claims 1 to 4.

6. A power supply system for a rail vehicle, characterized in that, It includes the power supply system body, and also includes the power supply system control device for the rail vehicle as described in claim 5; The power supply system body is connected to the power supply system control device of the rail vehicle.

7. A computer storage medium, characterized in that, The computer storage medium stores a computer program, which, when executed by a processor, implements the steps of the power supply system control method for rail vehicles as described in any one of claims 1 to 4.

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