A hydrogen-electric hybrid power control method and device for a hydrogen energy train

Abstract

The present application provides a hydrogen-electric hybrid power control method and device for a hydrogen energy train, wherein the hydrogen energy train is provided with a hydrogen-electric hybrid power system including a hydrogen fuel cell and a power battery, and the method includes: obtaining the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time; determining the current operating condition of the target hydrogen energy train based on the power range to which the real-time power consumption belongs; determining the energy distribution strategy of the hydrogen-electric hybrid power system under the operating condition based on the voltage range to which the operating voltage belongs; controlling the hydrogen-electric hybrid power system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each operating condition based on the hydrogen-electric hybrid power system. Through the above method, the flexibility and safety of the hydrogen energy train in different operating conditions and environments are improved, thereby improving the performance stability and energy utilization rate of the hydrogen-electric hybrid power system.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen energy trains, and in particular to a hydrogen-electric hybrid power control method and device for hydrogen energy trains. Background Art

[0002] With the world's increasing emphasis on low-carbon economy and sustainable development, hydrogen energy, as a clean and efficient form of energy, is gradually becoming an important development direction for the power forms of major transportation equipment. Hydrogen energy trains use a hydrogen-electric hybrid system consisting of hydrogen fuel cells and power batteries as the vehicle's power source, with the advantages of zero carbon emissions, high energy density and rapid fuel refueling.

[0003] At present, the energy distribution control of the hydrogen-electric hybrid system of hydrogen energy trains is mainly based on the known train route plan. The energy distribution strategy of the hydrogen-electric hybrid system is formulated in advance, and is no longer adjusted according to the actual working conditions during the operation of the train. This reduces the flexibility and safety of hydrogen energy trains in complex and changing working conditions and environments, and thus reduces the performance stability and energy utilization of the hydrogen-electric hybrid system. Summary of the Invention

[0004] In view of this, the purpose of the present application is to provide a hydrogen-electric hybrid power control method and device for a hydrogen energy train, which accurately senses the changes in various operating conditions of the hydrogen energy train by obtaining the real-time power consumption and the operating voltage of the power battery in real time during the operation of the hydrogen energy train, and determines the energy distribution strategy of the hydrogen-electric hybrid power system based on the voltage range to which the operating voltage belongs under each operating condition, so as to dynamically adjust the energy distribution ratio and output power of the hydrogen fuel cell and the power battery, ensure that the hydrogen energy train can obtain adaptive power and electric energy under any operating condition, optimize the energy distribution and recovery control strategy of the hydrogen-electric hybrid power system, extend the service life of the hydrogen fuel cell, improve the flexibility and safety of the hydrogen energy train under different operating conditions and environments, and thereby improve the performance stability and energy utilization of the hydrogen-electric hybrid power system.

[0005] An embodiment of the present application provides a hydrogen-electric hybrid control method for a hydrogen energy train, wherein the hydrogen energy train is provided with a hydrogen-electric hybrid system; wherein the hydrogen-electric hybrid system includes a hydrogen fuel cell and a power battery, and the method includes:

[0006] During the operation of the target hydrogen energy train, real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery are obtained;

[0007] Determine the power range to which the real-time power consumption belongs, and based on the power range, determine the current operating condition of the target hydrogen energy train; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition;

[0008] Under the operating condition, determining a voltage range to which the operating voltage belongs, and determining an energy allocation strategy for the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs; wherein the voltage range represents a charged operating state of the power battery;

[0009] The hydrogen-electric hybrid power system is controlled to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

[0010] Furthermore, determining the power range to which the real-time power consumption belongs, and determining the current operating condition of the target hydrogen energy train based on the power range, includes:

[0011] Comparing the real-time power consumption with the auxiliary system rated power of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell, and a preset value, respectively, to obtain a first comparison result; wherein the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value;

[0012] When the first comparison result is that the real-time power consumption is less than the preset value, determining that the power interval to which the real-time power consumption belongs is a first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition;

[0013] When the first comparison result is that the real-time power consumption is greater than or equal to the preset value and less than the rated power of the auxiliary system, determining that the power interval to which the real-time power consumption belongs is a second power interval, so as to determine that the current operating condition of the target hydrogen energy train is a coasting stop condition;

[0014] When the first comparison result is that the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, determining that the power interval to which the real-time power consumption belongs is a third power interval, so as to determine that the current operating condition of the target hydrogen energy train is a starting acceleration condition;

[0015] When the first comparison result is that the real-time power consumption is greater than or equal to the rated output power, the power interval to which the real-time power consumption belongs is determined to be the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

[0016] Furthermore, the voltage range to which the operating voltage belongs is determined by the following steps:

[0017] Comparing the operating voltage with a pre-set operating median voltage, a braking charging voltage threshold, and a charging voltage threshold of the power battery, respectively, to obtain a second comparison result; wherein the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold;

[0018] When the operating voltage is less than the operating median voltage, determining that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state;

[0019] When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state;

[0020] When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy sufficient state;

[0021] When the operating voltage is greater than or equal to the charging voltage threshold, the voltage interval to which the operating voltage belongs is determined to be a fourth voltage interval, so as to determine that the charging operating state of the power battery is a charging protection state.

[0022] Furthermore, when the operating condition is a braking condition, determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes:

[0023] When the voltage interval to which the operating voltage belongs is at least one of the first voltage interval, the second voltage interval, and the third voltage interval, determining the energy allocation strategy includes: controlling the power battery to absorb braking energy generated by the traction system of the target hydrogen energy train, and controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to a preset output power;

[0024] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the target hydrogen energy train to brake in a mechanical braking manner.

[0025] Furthermore, when the operating condition is a coasting stop condition, determining the energy allocation strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes:

[0026] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0027] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train;

[0028] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to a preset output power, and controlling the power battery to supplement the power supply to the auxiliary system, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption;

[0029] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the power battery to supply power to the auxiliary system according to the real-time power consumption.

[0030] Furthermore, when the operating condition is a starting and accelerating condition, determining the energy allocation strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes:

[0031] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively power the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0032] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption;

[0033] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train;

[0034] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to perform a supplementary output so that the output of the hydrogen-electric hybrid system meets the real-time power consumption.

[0035] Furthermore, when the operating condition is a traction condition, determining the energy allocation strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes:

[0036] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively supply power to the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power to provide traction power output, and controlling the power battery to stop discharging;

[0037] When the voltage interval to which the operating voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to power the auxiliary system and the traction system respectively according to the rated output power to provide traction power output, and controlling the power battery to provide supplementary power output for the hydrogen fuel cell.

[0038] The present application also provides a hydrogen-electric hybrid power control device for a hydrogen energy train, the device comprising:

[0039] A data acquisition module is used to obtain the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time during the operation of the target hydrogen energy train;

[0040] an operating condition determination module, configured to determine the power range to which the real-time power consumption belongs, and based on the power range, determine the current operating condition of the target hydrogen energy train; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition;

[0041] a strategy determination module, configured to determine, under the operating condition, a voltage range to which the operating voltage belongs, and determine, based on the voltage range to which the operating voltage belongs, an energy allocation strategy for the hydrogen-electric hybrid system under the operating condition; wherein the voltage range represents a charged operating state of the power battery;

[0042] The working control module is used to control the hydrogen-electric hybrid power system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

[0043] Furthermore, when the operating condition determination module is used to determine the power interval to which the real-time power consumption belongs and to determine the current operating condition of the target hydrogen energy train based on the power interval, the operating condition determination module is used to:

[0044] Comparing the real-time power consumption with the auxiliary system rated power of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell, and a preset value, respectively, to obtain a first comparison result; wherein the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value;

[0045] When the first comparison result is that the real-time power consumption is less than the preset value, determining that the power interval to which the real-time power consumption belongs is a first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition;

[0046] When the first comparison result is that the real-time power consumption is greater than or equal to the preset value and less than the rated power of the auxiliary system, determining that the power interval to which the real-time power consumption belongs is a second power interval, so as to determine that the current operating condition of the target hydrogen energy train is a coasting stop condition;

[0047] When the first comparison result is that the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, determining that the power interval to which the real-time power consumption belongs is a third power interval, so as to determine that the current operating condition of the target hydrogen energy train is a starting acceleration condition;

[0048] When the first comparison result is that the real-time power consumption is greater than or equal to the rated output power, the power interval to which the real-time power consumption belongs is determined to be the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

[0049] Furthermore, when the strategy determination module is used to determine the voltage interval to which the operating voltage belongs, the strategy determination module is used to:

[0050] Comparing the operating voltage with a pre-set operating median voltage, a braking charging voltage threshold, and a charging voltage threshold of the power battery, respectively, to obtain a second comparison result; wherein the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold;

[0051] When the operating voltage is less than the operating median voltage, determining that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state;

[0052] When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state;

[0053] When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy sufficient state;

[0054] When the operating voltage is greater than or equal to the charging voltage threshold, the voltage interval to which the operating voltage belongs is determined to be a fourth voltage interval, so as to determine that the charging operating state of the power battery is a charging protection state.

[0055] Furthermore, when the operating condition is a braking condition, the strategy determination module is used to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module is used to:

[0056] When the voltage interval to which the operating voltage belongs is at least one of the first voltage interval, the second voltage interval, and the third voltage interval, determining the energy allocation strategy includes: controlling the power battery to absorb braking energy generated by the traction system of the target hydrogen energy train, and controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to a preset output power;

[0057] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the target hydrogen energy train to brake in a mechanical braking manner.

[0058] Furthermore, when the operating condition is a coasting stop condition, the strategy determination module is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module is configured to:

[0059] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0060] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train;

[0061] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to a preset output power, and controlling the power battery to supplement the power supply to the auxiliary system, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption;

[0062] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the power battery to supply power to the auxiliary system according to the real-time power consumption.

[0063] Furthermore, when the operating condition is a starting and accelerating condition, the strategy determination module is used to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module is used to:

[0064] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively power the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0065] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption;

[0066] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train;

[0067] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to perform a supplementary output so that the output of the hydrogen-electric hybrid system meets the real-time power consumption.

[0068] Furthermore, when the operating condition is a traction condition, the strategy determination module is used to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module is used to:

[0069] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively supply power to the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power to provide traction power output, and controlling the power battery to stop discharging;

[0070] When the voltage interval to which the operating voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to power the auxiliary system and the traction system respectively according to the rated output power to provide traction power output, and controlling the power battery to provide supplementary power output for the hydrogen fuel cell.

[0071] An embodiment of the present application also provides an electronic device, comprising: a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus, and when the machine-readable instructions are executed by the processor, the steps of the hydrogen-electric hybrid control method for the hydrogen energy train as described above are performed.

[0072] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the hydrogen-electric hybrid control method for a hydrogen energy train as described above are executed.

[0073] The embodiments of the present application provide a hydrogen-electric hybrid control method and device for a hydrogen energy train, wherein the hydrogen energy train is provided with a hydrogen-electric hybrid system; wherein the hydrogen-electric hybrid system includes a hydrogen fuel cell and a power battery, and the method includes: during the operation of the target hydrogen energy train, obtaining the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time; determining the power range to which the real-time power consumption belongs, and based on the power range, determining the current operating condition of the target hydrogen energy train; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition and a traction condition; under the operating condition, determining the voltage range to which the operating voltage belongs, and determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs; wherein the voltage range represents the charged working state of the power battery; controlling the hydrogen-electric hybrid system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid system.

[0074] Compared with the existing method that is mainly based on known train route plans, pre-formulates the energy distribution strategy of the hydrogen-electric hybrid power system, and no longer adjusts it according to the actual working conditions during the operation of the train, the real-time power consumption and the operating voltage of the power battery are obtained in real time during the operation of the hydrogen energy train, and the changes in various operating conditions of the hydrogen energy train are accurately sensed. Under each operating condition, the energy distribution strategy of the hydrogen-electric hybrid power system is determined based on the voltage range to which the operating voltage belongs, so as to dynamically adjust the energy distribution ratio and output power of the hydrogen fuel cell and the power battery, ensuring that the hydrogen energy train can obtain suitable power and electricity under any operating condition, optimizing the energy distribution and recovery control strategy of the hydrogen-electric hybrid power system, extending the service life of the hydrogen fuel cell, and improving the flexibility and safety of the hydrogen energy train under different operating conditions and environments, thereby improving the performance stability and energy utilization of the hydrogen-electric hybrid power system.

[0075] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0077] Figure 1A flow chart of a hydrogen-electric hybrid power control method for a hydrogen energy train provided in an embodiment of the present application;

[0078] Figure 2 This is one of the schematic diagrams of a voltage range representing the charged working state of a power battery provided in an embodiment of the present application;

[0079] Figure 3 This is a second schematic diagram of a voltage range representing the charged working state of a power battery provided in an embodiment of the present application;

[0080] Figure 4 A schematic structural diagram of a hydrogen-electric hybrid power control device for a hydrogen energy train provided in an embodiment of the present application;

[0081] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0082] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work falls within the scope of protection of the present application.

[0083] Research has found that at present, the energy distribution control of the hydrogen-electric hybrid system of hydrogen energy trains is mainly based on the known train route plan. The energy distribution strategy of the hydrogen-electric hybrid system is formulated in advance, and is no longer adjusted according to the actual working conditions during the operation of the train. This reduces the flexibility and safety of hydrogen energy trains in complex and changing working conditions and environments, and thus reduces the performance stability and energy utilization of the hydrogen-electric hybrid system.

[0084] Specifically, when a hydrogen-powered train encounters sudden special operating conditions such as emergency acceleration, braking or failure, the pre-established energy distribution strategy may not be able to quickly make the optimal energy control. For example, during emergency braking, the power battery cannot be controlled to efficiently recover braking energy, resulting in a waste of energy resources. In addition, when encountering sudden high-power demands, the train cannot coordinate the discharge and replenishment of power from the power battery well, affecting the train's power performance.

[0085] Based on this, an embodiment of the present application provides a hydrogen-electric hybrid power control method for a hydrogen energy train, which accurately senses changes in various operating conditions of the hydrogen energy train by obtaining real-time power consumption and the operating voltage of the power battery in real time during the operation of the hydrogen energy train, and determines the energy distribution strategy of the hydrogen-electric hybrid power system based on the voltage range to which the operating voltage belongs under each operating condition, so as to dynamically adjust the energy distribution ratio and output power of the hydrogen fuel cell and the power battery, ensuring that the hydrogen energy train can obtain adaptive power and electrical energy under any operating condition, optimizing the energy distribution and recovery control strategy of the hydrogen-electric hybrid power system, extending the service life of the hydrogen fuel cell, and improving the flexibility and safety of the hydrogen energy train under different operating conditions and environments, thereby improving the performance stability and energy utilization of the hydrogen-electric hybrid power system.

[0086] See also Figure 1 , Figure 1 This is a flow chart of a hydrogen-electric hybrid power control method for a hydrogen energy train provided in an embodiment of the present application.

[0087] It should be noted that the hydrogen energy train is provided with a hydrogen-electric hybrid power system; wherein, the hydrogen-electric hybrid power system includes a hydrogen fuel cell and a power battery.

[0088] Here, the hydrogen-electric hybrid system combines the advantages of hydrogen fuel cells and power batteries in a hydrogen energy train to achieve a more efficient and flexible power solution. The hydrogen-electric hybrid system aims to utilize the technical advantages of hydrogen fuel cells and power batteries respectively to optimize train performance and improve energy utilization efficiency and endurance.

[0089] Among them, the hydrogen fuel cell generates electricity through the chemical reaction of hydrogen and oxygen. This process only produces water, so it is zero-emission. The hydrogen fuel cell provides the main power source for the train, especially when continuous large amounts of energy need to be output, and can charge the power battery when the power of the power battery is low.

[0090] The power battery is used to store energy recovered from braking (regenerative braking) and provide supplementary power when the train accelerates or requires additional power. The power battery not only improves the energy utilization efficiency of the train, but also reduces the hydrogen consumption of the hydrogen fuel cell, thereby extending the train's mileage.

[0091] like Figure 1 As shown in , the hydrogen-electric hybrid power control method of the hydrogen energy train provided by the embodiment of the present application includes:

[0092] S100 . During the operation of a target hydrogen energy train, obtain the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time.

[0093] It should be noted that the real-time power consumption generated by the target hydrogen energy train during operation mainly includes the energy consumption generated by the traction system and the auxiliary system.

[0094] Among them, the target hydrogen energy train is equipped with a traction system and an auxiliary system. The traction system is the power source of the target hydrogen energy train, responsible for converting energy into mechanical energy to drive the train forward; the auxiliary system mainly refers to various subsystems that support the non-traction functions of the train, including but not limited to: power supply system (for example, lighting, air conditioning and other electrical equipment), control system, communication system, safety system and environmental control system, etc.

[0095] In an embodiment of the present application, during the operation of the target hydrogen energy train, the energy distribution control of the hydrogen fuel cell and the power battery included in the hydrogen-electric hybrid system is mainly based on the power demand of the target hydrogen energy train, that is, the train state under the operating conditions of the target hydrogen energy train; here, the real-time power consumption of the target hydrogen energy train is used to represent the operating conditions of the target hydrogen energy train; and the working voltage of the power battery is used to represent the charged working state of the power battery.

[0096] In this step, during the operation of the target hydrogen energy train, the traction system and the auxiliary system are used to collect the traction power and auxiliary power of the target hydrogen energy train in real time, and the traction power and the auxiliary power are added to determine the addition result as the real-time power consumption of the target hydrogen energy train; at the same time, the battery management system of the power battery is used to obtain the operating voltage of the power battery.

[0097] S200. Determine the power range to which the real-time power consumption belongs, and based on the power range, determine the current operating condition of the target hydrogen energy train; wherein the operating condition at least includes a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition.

[0098] It should be noted that the braking condition refers to the process of decelerating or stopping the target hydrogen energy train. During this process, the target hydrogen energy train reduces its speed through the braking system until it stops completely, mainly including electric braking and mechanical braking; the coasting stop condition refers to the operating mode when the target hydrogen energy train approaches the station and is ready to stop. Under this condition, the train's traction system no longer provides power, but relies on inertia to glide to the platform; the starting acceleration condition refers to the process in which the target hydrogen energy train starts to move from a stationary state and gradually accelerates; the traction condition refers to the target hydrogen energy train relying on the power provided by its traction system to move forward.

[0099] Here, under the braking condition and the coasting stop condition, the traction system of the target hydrogen energy train does not require power output, while the auxiliary system of the target hydrogen energy train requires energy supply; under the starting acceleration condition and the traction condition, both the traction system and the auxiliary system of the target hydrogen energy train require energy supply.

[0100] In this step, the real-time power consumption is compared with the preset value, the rated power of the auxiliary system of the target hydrogen energy train, and the rated output power corresponding to the hydrogen fuel cell, and the power range to which the real-time power consumption belongs is determined based on the comparison result. Then, based on the power range, the current operating condition of the target hydrogen energy train is determined.

[0101] In one embodiment of the present application, during specific implementation, step S200 may include:

[0102] S210. Compare the real-time power consumption with the auxiliary system rated power of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell and a preset value, to obtain a first comparison result; wherein, the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value.

[0103] In this step, the real-time power consumption of the hydrogen energy train is used to represent the train power and energy demand, and the real-time power consumption is compared with the rated power of the auxiliary system of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell and the preset value to obtain a first comparison result.

[0104] In an embodiment of the present application, the rated power of the auxiliary system is the maximum auxiliary power preset for the auxiliary system of the target hydrogen energy train, the rated output power is the maximum output power of the hydrogen fuel cell, and the preset value is generally set to 0.

[0105] Here, the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value, that is, the maximum output power of the hydrogen fuel cell is greater than the maximum auxiliary power of the auxiliary system, and the maximum auxiliary power of the auxiliary system is greater than 0.

[0106] S220. When the first comparison result is that the real-time power consumption is less than the preset value, determine that the power interval to which the real-time power consumption belongs is the first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition.

[0107] In this step, when the real-time power consumption is less than the preset value, that is, when the real-time power consumption is less than 0, it indicates that the hydrogen-electric hybrid system is absorbing the energy generated by braking, and the power interval to which the real-time power consumption belongs is determined to be the first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition.

[0108] S230. When the first comparison result is that the real-time power consumption is greater than or equal to the preset value and less than the rated power of the auxiliary system, determine that the power interval to which the real-time power consumption belongs is the second power interval, so as to determine that the current operating condition of the target hydrogen energy train is a coasting stop condition.

[0109] In this step, when the real-time power consumption is greater than or equal to the preset value (i.e., the value 0) and less than the rated power of the auxiliary system, it indicates that the traction system of the target hydrogen energy train does not need power supply, while the auxiliary system needs energy supply. The power interval to which the real-time power consumption belongs is determined to be the second power interval, so as to determine that the current operating condition of the target hydrogen energy train is the coasting stop condition.

[0110] S240. When the first comparison result is that the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, determine that the power interval to which the real-time power consumption belongs is the third power interval, so as to determine that the current operating condition of the target hydrogen energy train is the starting acceleration condition.

[0111] In this step, when the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, it indicates that the traction system of the target hydrogen energy train needs energy to accelerate the train, and the auxiliary system also needs energy supply. The power interval to which the real-time power consumption belongs is determined to be the third power interval, so as to determine that the current operating condition of the target hydrogen energy train is the starting acceleration condition.

[0112] S250. When the first comparison result is that the real-time power consumption is greater than or equal to the rated output power, determine that the power interval to which the real-time power consumption belongs is the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

[0113] In this step, when the real-time power consumption is greater than or equal to the rated output power of the hydrogen fuel cell, it indicates that the energy provided by the hydrogen fuel cell cannot meet the energy required by the traction system of the target hydrogen energy train, and the power battery is required to provide supplementary energy output. The power interval to which the real-time power consumption belongs is determined to be the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

[0114] S300. Under the operating condition, determine the voltage range to which the operating voltage belongs, and based on the voltage range to which the operating voltage belongs, determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition; wherein, the voltage range represents the charged operating state of the power battery.

[0115] In the embodiment of the present application, the voltage interval represents the charged operating state of the power battery, that is, when the state of charge (SOC) value of the power battery is too high or too low, the power battery cannot output voltage smoothly, and the output power of the power battery at this time will be greatly reduced. Therefore, in order to maintain the voltage output by the power battery in the hydrogen-electric hybrid system stable and extend the service life of the power battery, the limit value of the state of charge value of the power battery (represented by the operating voltage of the power battery) is specified by the set voltage interval. If the operating voltage of the power battery is higher than the upper limit, the power battery is controlled to stop charging; if the operating voltage of the power battery is lower than the lower limit, the power battery is controlled to stop discharging.

[0116] For details, please refer to Figure 2 , Figure 2 This is one of the schematic diagrams of a voltage range representing the charged working state of a power battery provided in an embodiment of the present application.

[0117] like Figure 2 As shown in , the state of charge value of the power battery is characterized by the operating voltage of the power battery, and the upper and lower limits of the operating voltage of the power battery are set as the charging voltage threshold (ie, V chg_lim , characterizing the upper limit of charge of the power battery SOC) and the discharge voltage threshold (i.e., V dis_lim , representing the lower discharge limit of the power battery SOC), where, V dis_lim The target hydrogen energy train is limited to consuming 20% of the energy in the power battery during traction for discharge protection; V dis_lim The target hydrogen energy train is limited to absorbing 9% of the energy in the power battery during braking for charging protection.

[0118] Further, such as Figure 2 As shown in , the voltage range limit also includes the operating median voltage (ie, V mid , characterizes the normal operating voltage value of the power battery ） , brake charge voltage threshold (i.e., V brk_lim , characterizing the upper limit of braking charge of power battery SOC) and the traction discharge threshold (i.e., V tra_lim , representing the lower limit of traction discharge of the power battery SOC).

[0119] In the implementation of this application, the voltage interval includes a first voltage interval, a second voltage interval, a third voltage interval and a fourth voltage interval; wherein, the first voltage interval means that the operating voltage is less than the operating median voltage (V mid ), the first voltage interval indicates that the charged working state of the power battery is an energy-deficient state; the second voltage interval refers to the working voltage being greater than or equal to the operating median voltage ( V mid ) and is less than the brake charging voltage threshold ( V brk_lim ), the second voltage interval indicates that the charged working state of the power battery is the charge holding state, that is, the power battery is in the charge holding state, and this voltage interval is also the working range of the working voltage of the power battery; the third voltage interval refers to the working voltage being at or equal to the brake charging voltage threshold ( V brk_lim ) and is less than the charging voltage threshold ( V chg_lim ), the third voltage interval indicates that the charged working state of the power battery is an energy-sufficient state; the fourth voltage interval refers to the working voltage being greater than or equal to the charging voltage threshold ( V chg_lim ), the fourth voltage interval represents that the charged working state of the power battery is the charging protection state, that is, the power battery is prohibited from charging.

[0120] Here, as Figure 2 As shown in , when the operating voltage is greater than the charging voltage threshold ( V chg_lim ), the power battery charging is terminated and 10% of the SOC capacity is reserved; when the operating voltage is less than the discharge voltage threshold ( V dis_lim ), the power battery discharge is terminated and 20% of the SOC capacity is reserved; when the operating voltage is equal to or greater than the brake charging voltage threshold ( V brk_lim ) and is less than the charging voltage threshold ( V chg_lim ), this voltage range is characterized as the braking recovery range.

[0121] Further, such as Figure 2 As shown in , when the operating voltage is greater than or equal to the discharge voltage threshold ( V dis_lim ) and is less than the traction discharge threshold ( V tra_lim ), the voltage interval is characterized as a traction discharge interval; the working voltage is less than the operating median voltage ( V mid ) and is greater than or equal to the traction discharge threshold ( V tra_lim), this voltage interval is characterized as a part of the SOC holding interval, that is, the working interval to which the working voltage of the power battery belongs.

[0122] In the embodiment of the present application, the target hydrogen energy train needs to consume about 20% of the energy in the power battery under traction conditions. After the traction is completed, the operating voltage of the power battery cannot be lower than the discharge voltage threshold ( V dis_lim ), therefore, when the target hydrogen energy train starts accelerating, the operating voltage of the power battery cannot be lower than the traction discharge threshold ( V tra_lim ); If the operating voltage of the power battery is lower than the traction discharge threshold before the next target hydrogen energy train starts ( V tra_lim ), it is necessary to use a hydrogen fuel cell to charge the power battery during parking.

[0123] Furthermore, when the target hydrogen energy train is in coasting stop condition, if the working voltage of the power battery is too low, the hydrogen fuel cell is used to charge the power battery, and the hydrogen fuel cell also provides energy for the auxiliary system of the train; under braking condition, since the power battery will recover 9% of the energy, therefore, under coasting stop condition, after the hydrogen fuel cell charges the power battery, the working voltage of the power battery cannot be higher than the braking charging voltage threshold ( V brk_lim ).

[0124] In one embodiment of the present application, during specific implementation, the step of determining the voltage interval to which the operating voltage belongs in step S300 may include:

[0125] S310. Compare the operating voltage with the pre-set operating median voltage, braking charging voltage threshold, and charging voltage threshold of the power battery to obtain a second comparison result; wherein, the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold.

[0126] In an embodiment of the present application, the maximum charging voltage of the power battery when the hydrogen energy train is in a braking condition is greater than the operating median voltage of the power battery during normal operation; and the charging voltage threshold of the power battery is greater than other voltage thresholds because the charging voltage threshold is the upper limit value of the charging protection of the power battery.

[0127] S320: When the operating voltage is less than the operating median voltage, determine that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state.

[0128] S330: When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determine that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state.

[0129] S340: When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determine that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy-sufficient state.

[0130] S350: When the operating voltage is greater than or equal to the charging voltage threshold, determine that the voltage interval to which the operating voltage belongs is a fourth voltage interval, so as to determine that the charging operating state of the power battery is a charging protection state.

[0131] For further information, see Figure 3 , Figure 3 This is a schematic diagram of a voltage range representing the charged working state of a power battery provided in an embodiment of the present application. Figure 3 As shown in , when the target hydrogen energy train is in a braking condition, the third voltage interval (ie, [ V brk_lim , V chg_lim ) interval) is a normal braking and charging interval, that is, the braking of the vehicle's traction system is used to recover energy for the power battery, while under other operating conditions, this interval is a braking standby charging interval; in addition, when the target hydrogen energy train is in the traction condition, when the operating voltage belongs to the first voltage interval and the operating voltage is greater than or equal to the discharge voltage threshold ( V dis_lim ) and is less than the traction discharge threshold ( V tra_lim ), the hydrogen fuel cell is discharged normally for the traction system at rated output power, while in other operating conditions, this interval is the traction standby charging interval.

[0132] In one embodiment of the present application, when the operating condition is a braking condition, the braking mode of the target hydrogen energy train includes a mixed mode of electric braking and mechanical braking. When the operating voltage is less than the charging voltage threshold V chg_lim When the voltage of the power battery is greater than or equal to the charging voltage threshold, the power battery absorbs the energy generated by the electric braking of the traction motor in the traction system. V chg_limWhen the voltage reaches 400 V (i.e., the fourth voltage interval), the target hydrogen energy train needs to be braked by mechanical braking and the hydrogen fuel cell is controlled to shut down.

[0133] Specifically, in step S300, when the operating condition is a braking condition, the step of determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs may include:

[0134] S3611. When the voltage interval to which the operating voltage belongs is at least one of the first voltage interval, the second voltage interval and the third voltage interval, determining the energy distribution strategy includes: controlling the power battery to absorb the braking energy generated by the traction system of the target hydrogen energy train, and controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the preset output power.

[0135] In the embodiment of the present application, the preset output power refers to the minimum output power of the hydrogen fuel cell.

[0136] S3612. When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the target hydrogen energy train to brake by mechanical braking.

[0137] In another embodiment of the present application, when the operating condition is a braking condition and the voltage interval to which the operating voltage belongs is the fourth voltage interval, the target hydrogen energy train can also be controlled to brake in an air braking manner.

[0138] In this way, for the key link of braking energy recovery, the determined energy distribution strategy sets up a more scientific and reasonable recovery control mechanism, fully considers the various situations of the target hydrogen energy train during braking, accurately controls the energy recovery process, and enables the braking energy to be stored in the power battery with higher efficiency, further reducing energy waste.

[0139] Furthermore, it ensures that hydrogen fuel cells operate in the high-efficiency range as much as possible, and reasonably adjusts their output power according to different power demand scenarios, which significantly improves the energy conversion efficiency of hydrogen fuel cells, reduces unnecessary consumption of hydrogen energy, and improves the energy utilization efficiency of hydrogen-electric hybrid systems.

[0140] In one embodiment of the present application, when the operating condition is a coasting stop condition, the main energy distribution strategy includes using a hydrogen fuel cell to provide energy for the train's auxiliary systems, and using a hydrogen fuel cell to charge the power battery based on the voltage range to which the operating voltage belongs.

[0141] Specifically, in step S300, when the operating condition is a coasting stop condition, the step of determining the energy allocation strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs may include:

[0142] S3621. When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery.

[0143] In an embodiment of the present application, when the operating condition is a coasting stop condition and the voltage interval to which the operating voltage belongs is the first voltage interval, the state of charge value of the power battery at this time is low, and the hydrogen fuel cell supplies power to the auxiliary system of the target hydrogen energy train at maximum output power and charges the power battery.

[0144] S3622. When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train.

[0145] In an embodiment of the present application, when the operating condition is a coasting stop condition and the voltage range to which the operating voltage belongs is the second voltage range, the power battery is in a charge retention state at this time, and the hydrogen fuel cell is controlled to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train.

[0146] The rated power of the auxiliary system is the maximum auxiliary power preset for the auxiliary system of the target hydrogen energy train.

[0147] S3623. When the voltage interval to which the working voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the preset output power, and controlling the power battery to supplement the power supply to the auxiliary system, so that the output of the hydrogen-electric hybrid power system meets the real-time power consumption.

[0148] In an embodiment of the present application, when the operating condition is a coasting stop condition and the voltage interval to which the operating voltage belongs is the third voltage interval, the state of charge value of the power battery at this time is relatively high, the hydrogen fuel cell is controlled to supply power to the auxiliary system according to the minimum output power, and the power battery is controlled to supplement the power supply to the auxiliary system, so that the output of the hydrogen fuel cell and the power battery meets the real-time power consumption of the target hydrogen energy train.

[0149] S3624. When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the power battery to supply power to the auxiliary system according to the real-time power consumption.

[0150] In an embodiment of the present application, when the operating condition is a coasting stop condition and the voltage interval to which the operating voltage belongs is the fourth voltage interval, the power battery is in a charging protection state, the hydrogen fuel cell is controlled to shut down, and the power battery is controlled to supply power to the auxiliary system according to the real-time power consumption.

[0151] In one embodiment of the present application, when the operating condition is a starting and acceleration condition, based on the voltage range to which the operating voltage belongs, when the operating voltage is relatively high, the power battery provides the energy required for the traction system and auxiliary system of the train, and when the operating voltage is relatively low, the hydrogen fuel cell charges the power battery.

[0152] Specifically, in step S300, when the operating condition is a start-up acceleration condition, the step of determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs may include:

[0153] S3631. When the voltage interval to which the working voltage belongs is the first voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery.

[0154] In an embodiment of the present application, when the operating condition is a starting and acceleration condition and the voltage interval to which the operating voltage belongs is the first voltage interval, the state of charge value of the power battery at this time is low, and the hydrogen fuel cell uses the maximum output power to power the auxiliary system of the target hydrogen energy train and charge the power battery.

[0155] In another embodiment of the present application, when the operating condition is a starting acceleration condition and the voltage interval to which the operating voltage belongs is the first voltage interval, it is determined whether the operating voltage is greater than or equal to the traction discharge threshold; if so, the hydrogen fuel cell is controlled to supply power to the auxiliary system of the target hydrogen energy train at maximum output power; if not, the hydrogen fuel cell is controlled to charge the power battery.

[0156] S3632. When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption.

[0157] In an embodiment of the present application, when the operating condition is the starting and acceleration condition and the voltage range to which the operating voltage belongs is the second voltage range, the power battery is in a charge retention state at this time, and the hydrogen fuel cell is controlled to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption required by the target hydrogen energy train, that is, the hydrogen fuel cell supplies power to the target hydrogen energy train at maximum output power.

[0158] S3633. When the voltage interval to which the working voltage belongs is the third voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train.

[0159] In an embodiment of the present application, when the operating condition is a starting and acceleration condition and the voltage range to which the operating voltage belongs is the third voltage range, the state of charge value of the power battery at this time is relatively high, and the hydrogen fuel cell supplies power to the auxiliary system according to the rated power of the auxiliary system, and the power battery supplies power to the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train.

[0160] The traction power is a pre-set power value of the traction system of the target hydrogen energy train.

[0161] S3634. When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to perform a supplementary output, so that the output of the hydrogen-electric hybrid power system meets the real-time power consumption.

[0162] In an embodiment of the present application, when the operating condition is a starting acceleration condition and the voltage interval to which the operating voltage belongs is the fourth voltage interval, the power battery is in a charging protection state at this time, and the hydrogen fuel cell is controlled to perform auxiliary output at the minimum output power, and the power battery provides energy that the output of the hydrogen fuel cell cannot meet the real-time power consumption, so that the output of the hydrogen fuel cell and the power battery meets the real-time power consumption.

[0163] In one embodiment of the present application, when the operating condition is a traction condition, the hydrogen-electric hybrid system preferentially uses the energy of the hydrogen fuel cell, and the power battery serves as a supplementary power source for the hydrogen fuel cell. However, when the voltage of the power battery is less than the operating median voltage ( V mid ), the power battery stops discharging, and the hydrogen fuel cell alone provides traction energy for the traction system of the target hydrogen energy train.

[0164] Here, due to the strong transient response capability of the power battery, when the target hydrogen energy train is accelerating, the power battery will be discharged first.

[0165] Specifically, in step S300, when the operating condition is a traction condition, the step of determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs may include:

[0166] S3641. When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and traction system of the target hydrogen energy train according to the rated output power to provide traction power output, and controlling the power battery to stop discharging.

[0167] In this step, when the operating condition is the traction condition and the voltage interval to which the operating voltage belongs is the first voltage interval, that is, when the voltage of the power battery is less than the operating median voltage ( V mid ), the state of charge of the power battery is low at this time, and the hydrogen fuel cell is controlled to supply power to the auxiliary system and traction system respectively according to the maximum output power, so as to provide traction power output to the target hydrogen energy train, and the power battery is controlled to stop discharging.

[0168] S3642. When the voltage interval to which the working voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the rated output power to provide traction power output, and controlling the power battery to provide supplementary power output for the hydrogen fuel cell.

[0169] In this step, when the operating condition is the traction condition and the voltage interval to which the operating voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, that is, when the voltage of the power battery is greater than or equal to the operating median voltage ( V mid ), the hydrogen fuel cell is controlled to supply power to the auxiliary system and the traction system respectively according to the maximum output power, so as to provide traction power output to the target hydrogen energy train, and the power battery is controlled to provide supplementary power output for the hydrogen fuel cell.

[0170] S400: Control the hydrogen-electric hybrid power system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

[0171] In this step, after determining the operating conditions of the target hydrogen energy train and the energy distribution strategy under the operating conditions, the hydrogen-electric hybrid power system is controlled to distribute and output energy according to the energy distribution strategy, so that the target hydrogen energy train operates under the operating conditions based on the hydrogen-electric hybrid power system.

[0172] In this way, according to the real-time power demand of the target hydrogen energy train, the various operating condition changes of the target hydrogen energy train during operation, including different line slopes, driving speeds, start-stop states, etc., can be accurately sensed. By obtaining the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time, the energy distribution ratio and output power of the hydrogen fuel cell and the power battery can be quickly and accurately determined, so as to make dynamic adjustments based on the energy distribution strategy to ensure that the target hydrogen energy train can obtain suitable power under any operating conditions.

[0173] For example, when the target hydrogen energy train requires high power output such as climbing a slope or accelerating, it can coordinate the collaborative work of the hydrogen fuel cell and the power battery in a timely manner to ensure sufficient power and rapid response; and in low-power demand stages such as constant speed driving, it avoids energy waste, effectively overcoming the shortcomings of low flexibility and applicability in the method of pre-formulating energy allocation strategies.

[0174] Furthermore, based on the comprehensive power requirements of the target hydrogen energy train, comprehensive coordination and optimization are carried out from the perspective of the hydrogen-electric hybrid power system, so that the cooperation between the various components is more tacit, the distribution and management of energy flow are more scientific and orderly, and the overall performance and operational stability of the hydrogen-electric hybrid power system are improved, ensuring that the target hydrogen energy train can operate stably and efficiently in the long term.

[0175] The hydrogen-electric hybrid power control method for a hydrogen energy train provided in an embodiment of the present application obtains the real-time power consumption and the operating voltage of the power battery in real time during the operation of the hydrogen energy train, accurately senses the changes in various operating conditions of the hydrogen energy train, and determines the energy distribution strategy of the hydrogen-electric hybrid power system under each operating condition based on the voltage range to which the operating voltage belongs, so as to dynamically adjust the energy distribution ratio and output power of the hydrogen fuel cell and the power battery, thereby ensuring that the hydrogen energy train can obtain adaptive power and electric energy under any operating condition, optimizing the energy distribution and recovery control strategy of the hydrogen-electric hybrid power system, extending the service life of the hydrogen fuel cell, and improving the flexibility and safety of the hydrogen energy train under different operating conditions and environments, thereby improving the performance stability and energy utilization rate of the hydrogen-electric hybrid power system.

[0176] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of a hydrogen-electric hybrid control device for a hydrogen energy train provided in an embodiment of the present application. Figure 4As shown in FIG, the hydrogen-electric hybrid power control device 400 of the hydrogen energy train includes:

[0177] The data acquisition module 410 is used to obtain the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time during the operation of the target hydrogen energy train;

[0178] The operating condition determination module 420 is configured to determine the power range to which the real-time power consumption belongs, and based on the power range, determine the current operating condition of the target hydrogen energy train; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition;

[0179] a strategy determination module 430 for determining, under the operating condition, a voltage range to which the operating voltage belongs, and determining, based on the voltage range to which the operating voltage belongs, an energy allocation strategy for the hydrogen-electric hybrid system under the operating condition; wherein the voltage range represents a charged operating state of the power battery;

[0180] The working control module 440 is used to control the hydrogen-electric hybrid power system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

[0181] Furthermore, when the operating condition determination module 420 is used to determine the power interval to which the real-time power consumption belongs and to determine the current operating condition of the target hydrogen energy train based on the power interval, the operating condition determination module 420 is used to:

[0182] Comparing the real-time power consumption with the auxiliary system rated power of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell, and a preset value, respectively, to obtain a first comparison result; wherein the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value;

[0183] When the first comparison result is that the real-time power consumption is less than the preset value, determining that the power interval to which the real-time power consumption belongs is a first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition;

[0184] When the first comparison result is that the real-time power consumption is greater than or equal to the preset value and less than the rated power of the auxiliary system, determining that the power interval to which the real-time power consumption belongs is a second power interval, so as to determine that the current operating condition of the target hydrogen energy train is a coasting stop condition;

[0185] When the first comparison result is that the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, determining that the power interval to which the real-time power consumption belongs is a third power interval, so as to determine that the current operating condition of the target hydrogen energy train is a starting acceleration condition;

[0186] When the first comparison result is that the real-time power consumption is greater than or equal to the rated output power, the power interval to which the real-time power consumption belongs is determined to be the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

[0187] Furthermore, when the strategy determination module 430 is used to determine the voltage interval to which the operating voltage belongs, the strategy determination module 430 is used to:

[0188] Comparing the operating voltage with a pre-set operating median voltage, a braking charging voltage threshold, and a charging voltage threshold of the power battery, respectively, to obtain a second comparison result; wherein the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold;

[0189] When the operating voltage is less than the operating median voltage, determining that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state;

[0190] When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state;

[0191] When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy sufficient state;

[0192] When the operating voltage is greater than or equal to the charging voltage threshold, the voltage interval to which the operating voltage belongs is determined to be a fourth voltage interval, so as to determine that the charging operating state of the power battery is a charging protection state.

[0193] Furthermore, when the operating condition is a braking condition, the strategy determination module 430 is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module 430 is configured to:

[0194] When the voltage interval to which the operating voltage belongs is at least one of the first voltage interval, the second voltage interval, and the third voltage interval, determining the energy allocation strategy includes: controlling the power battery to absorb braking energy generated by the traction system of the target hydrogen energy train, and controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to a preset output power;

[0195] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the target hydrogen energy train to brake in a mechanical braking manner.

[0196] Furthermore, when the operating condition is a coasting stop condition, the strategy determination module 430 is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module 430 is configured to:

[0197] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0198] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train;

[0199] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to a preset output power, and controlling the power battery to supplement the power supply to the auxiliary system, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption;

[0200] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the power battery to supply power to the auxiliary system according to the real-time power consumption.

[0201] Furthermore, when the operating condition is a start-up acceleration condition, the strategy determination module 430 is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module 430 is configured to:

[0202] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively power the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery;

[0203] When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption;

[0204] When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train;

[0205] When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to perform a supplementary output so that the output of the hydrogen-electric hybrid system meets the real-time power consumption.

[0206] Furthermore, when the operating condition is a traction condition, the strategy determination module 430 is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module 430 is configured to:

[0207] When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively supply power to the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power to provide traction power output, and controlling the power battery to stop discharging;

[0208] When the voltage interval to which the operating voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to power the auxiliary system and the traction system respectively according to the rated output power to provide traction power output, and controlling the power battery to provide supplementary power output for the hydrogen fuel cell.

[0209] The hydrogen-electric hybrid control device for a hydrogen energy train provided in an embodiment of the present application accurately senses changes in various operating conditions of the hydrogen energy train by acquiring real-time power consumption and the operating voltage of the power battery in real time during the operation of the hydrogen energy train, and determines the energy distribution strategy of the hydrogen-electric hybrid system based on the voltage range to which the operating voltage belongs under each operating condition, so as to dynamically adjust the energy distribution ratio and output power of the hydrogen fuel cell and the power battery, thereby ensuring that the hydrogen energy train can obtain adaptive power and electrical energy under any operating condition, optimizing the energy distribution and recovery control strategy of the hydrogen-electric hybrid system, extending the service life of the hydrogen fuel cell, and improving the flexibility and safety of the hydrogen energy train under different operating conditions and environments, thereby improving the performance stability and energy utilization rate of the hydrogen-electric hybrid system.

[0210] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 5 As shown in FIG, the electronic device 500 includes a processor 510, a memory 520 and a bus 530.

[0211] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 communicates with the memory 520 via the bus 530. When the machine-readable instructions are executed by the processor 510, the above-mentioned Figure 1 The steps of the hydrogen-electric hybrid control method for a hydrogen energy train in the method embodiment shown are specifically implemented in accordance with the method embodiment and will not be described in detail here.

[0212] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1 The steps of the hydrogen-electric hybrid control method for a hydrogen energy train in the method embodiment shown are specifically implemented in accordance with the method embodiment and will not be described in detail here.

[0213] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0214] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0215] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0216] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0217] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0218] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A hydrogen-electric hybrid power control method for a hydrogen energy train, characterized in that: The hydrogen energy train is provided with a hydrogen-electric hybrid power system; wherein the hydrogen-electric hybrid power system includes a hydrogen fuel cell and a power battery, and the method includes: During the operation of the target hydrogen energy train, obtaining the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time; Compare the real-time power consumption with a preset value, the rated power of the auxiliary system of the target hydrogen energy train, and the rated output power corresponding to the hydrogen fuel cell, respectively; determine the power range to which the real-time power consumption belongs based on the comparison results; and determine the current operating condition of the target hydrogen energy train based on the power range; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition; Under the operating condition, determining a voltage range to which the operating voltage belongs, and determining an energy allocation strategy for the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs; wherein the voltage range represents a charged operating state of the power battery; The voltage range to which the operating voltage belongs is determined by the following steps: Comparing the operating voltage with a pre-set operating median voltage, a braking charging voltage threshold, and a charging voltage threshold of the power battery, respectively, to obtain a second comparison result; wherein the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold; When the operating voltage is less than the operating median voltage, determining that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state; When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state; When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy sufficient state; When the operating voltage is greater than or equal to the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a fourth voltage interval, so as to determine that the charged operating state of the power battery is a charging protection state; When the operating condition is a starting and accelerating condition, determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes: When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively power the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery; When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption; When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train; When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to provide supplementary output, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption; The hydrogen-electric hybrid power system is controlled to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

2. The method according to claim 1, characterized in that The determining of the power range to which the real-time power consumption belongs, and determining the current operating condition of the target hydrogen energy train based on the power range, includes: Comparing the real-time power consumption with the auxiliary system rated power of the target hydrogen energy train, the rated output power corresponding to the hydrogen fuel cell, and a preset value, respectively, to obtain a first comparison result; wherein the rated output power is greater than the auxiliary system rated power, and the auxiliary system rated power is greater than the preset value; When the first comparison result is that the real-time power consumption is less than the preset value, determining that the power interval to which the real-time power consumption belongs is a first power interval, so as to determine that the current operating condition of the target hydrogen energy train is a braking condition; When the first comparison result is that the real-time power consumption is greater than or equal to the preset value and less than the rated power of the auxiliary system, determining that the power interval to which the real-time power consumption belongs is a second power interval, so as to determine that the current operating condition of the target hydrogen energy train is a coasting stop condition; When the first comparison result is that the real-time power consumption is greater than or equal to the rated power of the auxiliary system and less than the rated output power, determining that the power interval to which the real-time power consumption belongs is a third power interval, so as to determine that the current operating condition of the target hydrogen energy train is a starting acceleration condition; When the first comparison result is that the real-time power consumption is greater than or equal to the rated output power, the power interval to which the real-time power consumption belongs is determined to be the fourth power interval, so as to determine that the current operating condition of the target hydrogen energy train is the traction condition.

3. The method according to claim 1, characterized in that When the operating condition is a braking condition, determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes: When the voltage interval to which the operating voltage belongs is at least one of the first voltage interval, the second voltage interval, and the third voltage interval, determining the energy allocation strategy includes: controlling the power battery to absorb braking energy generated by the traction system of the target hydrogen energy train, and controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to a preset output power; When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the target hydrogen energy train to brake in a mechanical braking manner.

4. The method according to claim 1, wherein When the operating condition is a coasting stop condition, determining the energy allocation strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes: When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery; When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train; When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system according to a preset output power, and controlling the power battery to supplement the power supply to the auxiliary system, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption; When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to shut down, and controlling the power battery to supply power to the auxiliary system according to the real-time power consumption.

5. The method according to claim 1, wherein When the operating condition is a traction condition, determining the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs includes: When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively supply power to the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power to provide traction power output, and controlling the power battery to stop discharging; When the voltage interval to which the operating voltage belongs is at least one of the second voltage interval, the third voltage interval and the fourth voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to power the auxiliary system and the traction system respectively according to the rated output power to provide traction power output, and controlling the power battery to provide supplementary power output for the hydrogen fuel cell.

6. A hydrogen-electric hybrid power control device for a hydrogen energy train, characterized in that: The control device comprises: A data acquisition module is used to obtain the real-time power consumption of the target hydrogen energy train and the operating voltage of the power battery in real time during the operation of the target hydrogen energy train; an operating condition determination module, configured to compare the real-time power consumption with a preset value, the rated power of the auxiliary system of the target hydrogen energy train, and the rated output power corresponding to the hydrogen fuel cell, respectively; determine the power range to which the real-time power consumption belongs based on the comparison results; and determine the current operating condition of the target hydrogen energy train based on the power range; wherein the operating condition includes at least a braking condition, a coasting stop condition, a starting acceleration condition, and a traction condition; a strategy determination module, configured to determine, under the operating condition, a voltage range to which the operating voltage belongs, and determine, based on the voltage range to which the operating voltage belongs, an energy allocation strategy for the hydrogen-electric hybrid system under the operating condition; wherein the voltage range represents a charged operating state of the power battery; When the strategy determination module is used to determine the voltage interval to which the operating voltage belongs, the strategy determination module is used to: Comparing the operating voltage with a pre-set operating median voltage, a braking charging voltage threshold, and a charging voltage threshold of the power battery, respectively, to obtain a second comparison result; wherein the operating median voltage is less than the braking charging voltage threshold, and the braking charging voltage threshold is less than the charging voltage threshold; When the operating voltage is less than the operating median voltage, determining that the voltage interval to which the operating voltage belongs is a first voltage interval, so as to determine that the charged operating state of the power battery is an energy-deficient state; When the operating voltage is greater than or equal to the operating median voltage and less than the braking charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a second voltage interval, so as to determine that the charging operating state of the power battery is a charge holding state; When the operating voltage is greater than or equal to the braking charging voltage threshold and less than the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a third voltage interval, so as to determine that the charged operating state of the power battery is an energy sufficient state; When the operating voltage is greater than or equal to the charging voltage threshold, determining that the voltage interval to which the operating voltage belongs is a fourth voltage interval, so as to determine that the charged operating state of the power battery is a charging protection state; When the operating condition is a starting and accelerating condition, the strategy determination module is configured to determine the energy distribution strategy of the hydrogen-electric hybrid system under the operating condition based on the voltage range to which the operating voltage belongs, and the strategy determination module is configured to: When the voltage interval to which the operating voltage belongs is the first voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to respectively power the auxiliary system and the traction system of the target hydrogen energy train according to the rated output power, and controlling the hydrogen fuel cell to charge the power battery; When the voltage interval to which the operating voltage belongs is the second voltage interval, determining the energy distribution strategy includes: controlling the hydrogen fuel cell to supply power to the auxiliary system and the traction system respectively according to the real-time power consumption; When the voltage interval to which the operating voltage belongs is the third voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to power the auxiliary system according to the rated power of the auxiliary system of the target hydrogen energy train, and controlling the power battery to power the traction system of the target hydrogen energy train according to the traction power of the target hydrogen energy train; When the voltage interval to which the operating voltage belongs is the fourth voltage interval, determining the energy allocation strategy includes: controlling the hydrogen fuel cell to output according to a preset output power, and controlling the power battery to provide supplementary output, so that the output of the hydrogen-electric hybrid system meets the real-time power consumption; The working control module is used to control the hydrogen-electric hybrid power system to operate according to the energy distribution strategy, so that the target hydrogen energy train operates under each of the operating conditions based on the hydrogen-electric hybrid power system.

7. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus. When the processor is running, the machine-readable instructions execute the steps of the hydrogen-electric hybrid control method for a hydrogen energy train as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the hydrogen-electric hybrid control method for a hydrogen energy train as claimed in any one of claims 1 to 5 are executed.

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