Hydrogen supply system, control method and device thereof, vehicle and storage medium

Abstract

The invention discloses a hydrogen supply system and a control method and device thereof, a vehicle and a storage medium, and relates to the technical field of hydrogen supply systems.The hydrogen supply system comprises a hydrogen source, a fuel cell and a hydrogen energy engine and further comprises an integrated pressure reducing valve, and the first input end of the integrated pressure reducing valve communicates with the output end of the hydrogen source; a first output end of the integrated pressure reducing valve is communicated with a first branch, the first branch is used for providing hydrogen for the fuel cell, a second output end of the integrated pressure reducing valve is communicated with a second branch, the second branch is used for providing hydrogen for the hydrogen energy engine, and one end of a third branch is used for collecting hydrogen generated by the fuel cell; the other end of the third branch is communicated with the second input end of the integrated pressure reducing valve, the integrated pressure reducing valve is arranged to control hydrogen input of the hydrogen energy engine and the fuel cell, waste hydrogen recycling is achieved, pipeline arrangement of the hydrogen supply system is optimized, and the technical problems that the hydrogen supply system is complex in pipeline structure and low in system integration are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen supply systems, and in particular to a hydrogen supply system and a control method, device, vehicle and storage medium thereof. Background Art

[0002] Facing the dual-carbon era, the application of clean energy in automobiles has gradually been put on the agenda. In order to meet the demand for the gradual reduction of carbon emissions, hydrogen is widely used as a clean energy source. If fuel cells are used alone as a drive, a certain amount of waste hydrogen will be generated. It is possible to consider the coordinated control of hydrogen engines and fuel cells, and the waste hydrogen from the fuel cells can be burned in the engine to achieve the reuse of waste hydrogen. In order to realize the above-mentioned hydrogen supply system, if the hydrogen input of the fuel cell and the hydrogen engine is controlled separately by two pressure reducing valves, the number of pipelines in the entire hydrogen supply system is roughly equivalent to twice the original hydrogen supply system that only supplies fuel cells. The system structure is relatively complex and the system integration is low.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present invention provide a hydrogen supply system and a control method, device, vehicle and storage medium thereof, so as to at least solve the technical problems of complex piping structure and low system integration of the hydrogen supply system.

[0005] According to one aspect of an embodiment of the present invention, a hydrogen supply system is provided, the hydrogen supply system includes a hydrogen source, a fuel cell and a hydrogen engine, the hydrogen supply system also includes: an integrated pressure reducing valve, a first input end of the integrated pressure reducing valve is connected to an output end of the hydrogen source, a first output end of the integrated pressure reducing valve is connected to a first branch, the first branch is used to provide hydrogen to the fuel cell, a second output end of the integrated pressure reducing valve is connected to a second branch, the second branch is used to provide hydrogen to the hydrogen engine, a first end of the third branch is used to collect hydrogen generated by the fuel cell, and a second end of the third branch is connected to the second input end of the integrated pressure reducing valve.

[0006] Furthermore, the integrated pressure reducing valve includes: a first-level pressure reducing valve, the input end of the first-level pressure reducing valve is connected to the output end of the hydrogen source; a second-level fuel cell pressure reducing valve, the output end of the first-level pressure reducing valve is connected to the input end of the second-level fuel cell pressure reducing valve, and the output end of the second-level fuel cell pressure reducing valve is connected to the first branch; a second-level hydrogen engine pressure reducing valve, the output end of the first-level pressure reducing valve is connected to the first input end of the second-level hydrogen engine pressure reducing valve, the output end of the second-level hydrogen engine pressure reducing valve is connected to the second branch, and the second end of the third branch is connected to the second input end of the second-level hydrogen engine pressure reducing valve.

[0007] According to another aspect of an embodiment of the present invention, a vehicle is provided, comprising the above-mentioned hydrogen supply system.

[0008] According to another aspect of an embodiment of the present invention, a control method for a hydrogen supply system is also provided, and the control method is used to control the above-mentioned hydrogen supply system, and the control method includes: obtaining the required power of the whole vehicle; determining the first target power of the fuel cell and the second target power of the hydrogen engine according to the required power of the whole vehicle; when the first target power meets the preset conditions, generating a target control strategy set, and the target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport hydrogen generated by the fuel cell to the hydrogen engine.

[0009] Furthermore, when the first target power meets the preset conditions, a target control strategy set is generated, including: determining the target pressure value of the first branch according to the first target power; determining the target pressure value of the second branch according to the second target power; adjusting the secondary fuel cell pressure reducing valve so that the hydrogen pressure of the first branch is at the target pressure value of the first branch; adjusting the secondary hydrogen engine pressure reducing valve so that the hydrogen pressure of the second branch is at the target pressure value of the second branch.

[0010] Furthermore, when the first target power meets the preset conditions, a target control strategy set is generated, including: when the first target power is less than the first preset power threshold, a first target control strategy set in the target control strategy set is generated, and the first target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the first target pressure value of the first branch, and the hydrogen pressure of the second branch is at the first target pressure value of the second branch, and the hydrogen pressure of the third branch is in a preset range.

[0011] Furthermore, when the first target power meets the preset conditions, a target control strategy set is generated, including: when the first target power is greater than or equal to a first preset power threshold and less than a second preset power threshold, a second target control strategy set in the target control strategy set is generated, and the second target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the second target pressure value of the first branch, and the hydrogen pressure of the second branch is at the second target pressure value of the second branch, and the hydrogen pressure of the third branch is in a preset range; wherein.

[0012] Furthermore, when the first target power meets the preset conditions, a target control strategy set is generated, including: when the first target power is greater than or equal to the second preset power threshold and less than the third preset power threshold, a third target control strategy set in the target control strategy set is generated, and the third target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the third target pressure value of the first branch, and the hydrogen pressure of the second branch is at the third target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset range.

[0013] According to another aspect of an embodiment of the present invention, a control device of a hydrogen supply system is also provided, the control device executes the above-mentioned control method, and the control device includes: an acquisition module, the acquisition module is used to acquire the required power of the whole vehicle; a determination module, the determination module is used to determine the first target power of the fuel cell and the second target power of the hydrogen engine according to the required power of the whole vehicle; a control module, the control module is used to generate a target control strategy set when the first target power meets the preset conditions, the target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport hydrogen generated by the fuel cell to the hydrogen engine.

[0014] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0018] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0019] In the embodiment of the present invention, the hydrogen output from the hydrogen source enters the integrated pressure reducing valve from the first input end of the integrated pressure reducing valve for pressure regulation, part of the hydrogen flows into the first branch from the first output end of the integrated pressure reducing valve to provide hydrogen to the fuel cell, and the other part of the hydrogen flows into the second branch from the second output end of the integrated pressure reducing valve to provide hydrogen to the hydrogen engine. Part of the hydrogen (including unused hydrogen and waste hydrogen) will be generated during the operation of the fuel cell. The hydrogen generated by the fuel cell is collected to the third branch, flows to the second input end of the integrated pressure reducing valve, and flows into the second branch from the second output end of the integrated pressure reducing valve to provide hydrogen to the hydrogen engine. The technical solution in this embodiment sets an integrated pressure reducing valve to control the hydrogen input of the hydrogen engine and the fuel cell, realizes the technical effect of cooperative driving by the hydrogen engine and the fuel cell, and realizes the reuse of waste hydrogen generated by the fuel cell during operation, optimizes the pipeline layout of the hydrogen supply system, improves the system integration of the hydrogen supply system, and thus solves the technical problems of complex pipeline structure and low system integration of the hydrogen supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 is a schematic structural diagram of an optional hydrogen supply system according to an embodiment of the present invention;

[0022] Figure 2 is a flow chart of an optional control method of a hydrogen supply system according to an embodiment of the present invention;

[0023] Figure 3 is a flow chart of an optional control method of a hydrogen supply system according to an embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of an optional control device of a hydrogen supply system according to an embodiment of the present invention.

[0025] The above drawings include the following reference numerals:

[0026] 1. Hydrogen source;

[0027] 2. Fuel cells;

[0028] 3. Hydrogen engine;

[0029] 10. Integrated pressure reducing valve;

[0030] 11. First-stage pressure reducing valve;

[0031] 121. Secondary fuel cell pressure reducing valve; 122. Secondary hydrogen engine pressure reducing valve;

[0032] 21. First branch; 22. Second branch; 23. Third branch. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] According to one aspect of an embodiment of the present invention, a hydrogen supply system is provided.

[0036] Specifically, the hydrogen supply system includes a hydrogen source 1, a fuel cell 2 and a hydrogen engine 3, and the hydrogen supply system also includes: an integrated pressure reducing valve 10, the first input end of the integrated pressure reducing valve 10 is connected to the output end of the hydrogen source 1, the first output end of the integrated pressure reducing valve 10 is connected to the first branch 21, the first branch 21 is used to provide hydrogen to the fuel cell 2, the second output end of the integrated pressure reducing valve 10 is connected to the second branch 22, the second branch 22 is used to provide hydrogen to the hydrogen engine 3, the first end of the third branch 23 is used to collect the hydrogen generated by the fuel cell 2, and the second end of the third branch 23 is connected to the second input end of the integrated pressure reducing valve 10.

[0037] In this embodiment, the hydrogen output from the hydrogen source 1 enters the integrated pressure reducing valve 10 from the first input end of the integrated pressure reducing valve 10 for pressure regulation, part of the hydrogen flows from the first output end of the integrated pressure reducing valve 10 into the first branch 21 to provide hydrogen to the fuel cell 2, and the other part of the hydrogen flows from the second output end of the integrated pressure reducing valve 10 into the second branch 22 to provide hydrogen to the hydrogen energy engine 3. During the operation of the fuel cell 2, part of the hydrogen does not participate in the electrochemical reaction, which is called waste hydrogen. The waste hydrogen can be collected and transported to the hydrogen energy engine to achieve energy reuse. The hydrogen generated by the fuel cell 2 is collected to the third branch 23, flows to the second input end of the integrated pressure reducing valve 10, and flows from the second output end of the integrated pressure reducing valve 10 into the second branch 22 to provide hydrogen to the hydrogen energy engine 3. The technical solution in this embodiment sets an integrated pressure reducing valve 10 to control the hydrogen input of the hydrogen engine 3 and the fuel cell 2, thereby achieving the technical effect of coordinated driving by the hydrogen engine 3 and the fuel cell 2, and realizing the reuse of waste hydrogen generated by the fuel cell 2 during operation, thereby optimizing the pipeline layout of the hydrogen supply system and improving the system integration of the hydrogen supply system.

[0038] In another embodiment of the present application, the hydrogen supply system includes a hydrogen source 1, a fuel cell 2 and a hydrogen engine 3, and the hydrogen supply system also includes: an integrated pressure reducing valve 10, the first input end of the integrated pressure reducing valve 10 is connected to the output end of the hydrogen source 1, the first output end of the integrated pressure reducing valve 10 is connected to the first branch 21, the first branch 21 is used to provide hydrogen to the fuel cell 2, the second output end of the integrated pressure reducing valve 10 is connected to the second branch 22, the second branch 22 is used to provide hydrogen to the hydrogen engine 3, the first end of the third branch 23 is used to collect the hydrogen generated by the fuel cell 2, and the second end of the third branch 23 is connected to the second branch 22. The technical solution in this embodiment sets the integrated pressure reducing valve 10 to control the hydrogen input of the hydrogen engine 3 and the fuel cell 2, realizes the technical effect of coordinated driving by the hydrogen engine 3 and the fuel cell 2, and realizes the reuse of waste hydrogen generated by the fuel cell 2 during operation, optimizes the pipeline layout of the hydrogen supply system, and improves the system integration of the hydrogen supply system.

[0039] Furthermore, the integrated pressure reducing valve 10 includes a first-level pressure reducing valve 11, a second-level fuel cell pressure reducing valve 121 and a second-level hydrogen engine pressure reducing valve 122. The input end of the first-level pressure reducing valve 11 is connected to the output end of the hydrogen source 1; the output end of the first-level pressure reducing valve 11 is connected to the input end of the second-level fuel cell pressure reducing valve 121, and the output end of the second-level fuel cell pressure reducing valve 121 is connected to the first branch 21; the output end of the first-level pressure reducing valve 11 is connected to the first input end of the second-level hydrogen engine pressure reducing valve 122, the output end of the second-level hydrogen engine pressure reducing valve 122 is connected to the second branch 22, and the second end of the third branch 23 is connected to the second input end of the second-level hydrogen engine pressure reducing valve 122.

[0040] Combination Figure 1 As shown, in this embodiment, the hydrogen output from the hydrogen source 1 enters the first-level pressure reducing valve 11 from the input end of the first-level pressure reducing valve 11 for first-level pressure regulation, and part of the hydrogen after the first-level pressure regulation flows out from the output end of the first-level pressure reducing valve 11, flows into the second-level fuel cell pressure reducing valve 121 through the input end of the second-level fuel cell pressure reducing valve 121 for second-level pressure regulation, and then flows into the first branch 21 from the output end of the second-level fuel cell pressure reducing valve 121 to provide hydrogen for the fuel cell 2; another part of the hydrogen after the first-level pressure regulation flows out from the output end of the first-level pressure reducing valve 11, flows into the second-level hydrogen engine pressure reducing valve 122 through the first input end of the second-level hydrogen engine pressure reducing valve 122 for second-level pressure regulation, and then flows into the second branch 22 from the output end of the second-level hydrogen engine pressure reducing valve 122 to provide hydrogen for the hydrogen engine 3. During the operation of the fuel cell 2, some hydrogen (including unused hydrogen and waste hydrogen) is generated. The hydrogen generated by the fuel cell 2 is collected in the third branch 23, flows to the first input end of the second-stage hydrogen engine pressure reducing valve 122, and flows into the second branch 22 from the output end of the second-stage hydrogen engine pressure reducing valve 122 to provide hydrogen to the hydrogen engine 3. The technical solution in this embodiment achieves the technical effect of cooperative driving of the hydrogen engine 3 and the fuel cell 2 by integrating the first-stage pressure reducing valve 11, the second-stage fuel cell pressure reducing valve 121 and the second-stage hydrogen engine pressure reducing valve 122, and realizes the reuse of waste hydrogen generated by the fuel cell 2 during operation, improves the hydrogen supply efficiency of the hydrogen supply system, optimizes the pipeline layout of the hydrogen supply system, improves the system integration of the hydrogen supply system, and improves the reliability and practicality of the hydrogen supply system.

[0041] In another embodiment of the present application, the integrated pressure reducing valve 10 includes a first-stage pressure reducing valve 11, a second-stage fuel cell pressure reducing valve 121 and a second-stage hydrogen engine pressure reducing valve 122, the input end of the first-stage pressure reducing valve 11 is connected to the output end of the hydrogen source 1; the output end of the first-stage pressure reducing valve 11 is connected to the input end of the second-stage fuel cell pressure reducing valve 121, and the output end of the second-stage fuel cell pressure reducing valve 121 is connected to the first branch 21; the output end of the first-stage pressure reducing valve 11 is connected to the first input end of the second-stage hydrogen engine pressure reducing valve 122, the output end of the second-stage hydrogen engine pressure reducing valve 122 is connected to the second branch 22, and the second end of the third branch 23 is connected to the second branch 22. The technical effect of cooperative driving by the hydrogen engine 3 and the fuel cell 2 is achieved, and the waste hydrogen generated by the fuel cell 2 during the working process is reused, the hydrogen supply efficiency of the hydrogen supply system is improved, the pipeline layout of the hydrogen supply system is optimized, the system integration of the hydrogen supply system is improved, and the reliability and practicality of the hydrogen supply system are improved.

[0042] In another embodiment of the present invention, a vehicle is provided, comprising the hydrogen supply system in the above embodiment.

[0043] Specifically, the hydrogen supply system includes a hydrogen source 1, a fuel cell 2 and a hydrogen engine 3, and the hydrogen supply system also includes: an integrated pressure reducing valve 10, the first input end of the integrated pressure reducing valve 10 is connected to the output end of the hydrogen source 1, the first output end of the integrated pressure reducing valve 10 is connected to the first branch 21, the first branch 21 is used to provide hydrogen to the fuel cell 2, the second output end of the integrated pressure reducing valve 10 is connected to the second branch 22, the second branch 22 is used to provide hydrogen to the hydrogen engine 3, one end of the third branch 23 is used to collect the hydrogen generated by the fuel cell 2, and the other end of the third branch 23 is connected to the second input end of the integrated pressure reducing valve 10.

[0044] In this embodiment, the hydrogen output from the hydrogen source 1 enters the integrated pressure reducing valve 10 from the first input end of the integrated pressure reducing valve 10 for pressure regulation, part of the hydrogen flows from the first output end of the integrated pressure reducing valve 10 into the first branch 21 to provide hydrogen to the fuel cell 2, and the other part of the hydrogen flows from the second output end of the integrated pressure reducing valve 10 into the second branch 22 to provide hydrogen to the hydrogen engine 3. During the operation of the fuel cell 2, part of the hydrogen (including unused hydrogen and waste hydrogen) is generated, and the hydrogen generated by the fuel cell 2 is collected to the third branch 23, flows to the second input end of the integrated pressure reducing valve 10, and flows from the second output end of the integrated pressure reducing valve 10 into the second branch 22 to provide hydrogen to the hydrogen engine 3. The technical solution in this embodiment sets the integrated pressure reducing valve 10 to control the hydrogen input of the hydrogen engine 3 and the fuel cell 2, realizes the technical effect of cooperative driving by the hydrogen engine 3 and the fuel cell 2, and realizes the reuse of waste hydrogen generated by the fuel cell 2 during operation, optimizes the pipeline layout of the hydrogen supply system, and improves the system integration of the hydrogen supply system.

[0045] According to an embodiment of the present invention, a control method embodiment of a hydrogen supply system is provided, and the control method is used to control the hydrogen supply system in the above embodiment. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown here.

[0046] Figure 2 is a method according to an embodiment of the present invention, such as Figure 2 As shown, the method comprises the following steps:

[0047] Step S102, obtaining the required power of the entire vehicle.

[0048] In step S102, the vehicle is pre-calibrated to obtain calibration data, and the system distributes power between the fuel cell and the hydrogen engine to obtain the distributed power of the fuel cell and the distributed power of the hydrogen engine.

[0049] Step S104, determining a first target power of the fuel cell and a second target power of the hydrogen engine according to the required power of the entire vehicle.

[0050] In step S104, the first target power of the fuel cell refers to the power part that the fuel cell needs to provide under the current vehicle power demand. The second target power of the hydrogen engine is the remaining power demand, which is provided by the hydrogen engine. When determining the first target power and the second target power, the efficiency and performance of the entire power system are considered, that is, the optimal operating range and efficiency of the fuel cell and the hydrogen engine are considered. For example, calibration is performed in advance through experiments, and after determining a vehicle power demand, the appropriate first target power and second target power are determined based on the economy of the vehicle and the optimal efficiency of the system. Finally, the vehicle power demand, the first target power and the second target power are stored in a data table, and the vehicle power demand is in a one-to-one correspondence with the first target power and the second target power. After determining a vehicle power demand, the optimal first target power and the second target power can be determined according to the table.

[0051] Step S106, when the first target power meets the preset conditions, a target control strategy set is generated, and the target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport hydrogen generated by the fuel cell to the hydrogen engine.

[0052] In step S106, hydrogen of a corresponding pressure is supplied to the fuel cell according to the first target power of the fuel cell, so that the fuel cell can be kept in a working state at all times, so that the waste hydrogen generated by the fuel cell is transported to the integrated pressure reducing valve through the third branch and then supplied to the hydrogen engine through the second branch. Therefore, the preset interval of the hydrogen pressure of the third branch of the hydrogen supply system is that the hydrogen pressure of the third branch is greater than or equal to zero, so as to realize the recycling of waste hydrogen.

[0053] Through the above steps, the integrated pressure reducing valve realizes pressure control of the first branch and the second branch, so as to coordinately control the hydrogen supply of the fuel cell and the hydrogen engine, optimize the pipeline setting of the hydrogen supply system, and improve the waste hydrogen utilization rate, hydrogen supply efficiency and system integration of the hydrogen supply system.

[0054] Furthermore, when the first target power meets a preset condition, a target control strategy set is generated, including:

[0055] Step S1071, determining a target pressure value of the first branch according to the first target power.

[0056] In step S1071, the system distributes the power of the fuel cell and the hydrogen engine according to the power demand of the whole vehicle, obtains the first target power, and compares the first target power with the preset power threshold. In a specific embodiment of the present application, the preset power threshold includes a first preset power threshold, a second preset power threshold and a third preset power threshold, wherein the first preset power threshold < the second preset power threshold < the third preset power threshold. Optionally, the first target power is in a one-to-one correspondence with the target pressure of the first branch.

[0057] Step S1072, determining a target pressure value of the second branch according to the second target power.

[0058] In step S1072, the system distributes the power of the fuel cell and the hydrogen engine according to the power demand of the whole vehicle, obtains the second target power, and determines the target pressure value of the second branch according to the second target power and the calibration data, wherein the second target power and the target pressure value of the second branch can be a one-to-one correspondence or a one-to-many correspondence, which is obtained through the previous calibration. The target pressure value of the second branch can be a fixed pressure or a multi-level variable pressure.

[0059] Step S1073, adjusting the secondary fuel cell pressure reducing valve so that the hydrogen pressure of the first branch is at the target pressure value of the first branch.

[0060] In step S1073, the first target power is compared with the preset power threshold, that is, the magnitude relationship between the first target power and the first preset power threshold is first determined. The first preset power threshold is the minimum power level at which the fuel cell needs to increase the hydrogen pressure. When the first target power is less than or equal to the first preset power threshold, the fuel cell operates under a lower performance requirement, and the first pressure reducing valve can be adjusted to keep the hydrogen pressure at the first pressure stage (the lowest stage) to meet the basic power requirement. The target pressure value of the first branch is determined according to the first target power. The hydrogen output from the hydrogen source enters the first pressure reducing valve from the input end of the first pressure reducing valve for first pressure regulation. Part of the hydrogen after the first pressure regulation flows out from the output end of the first pressure reducing valve 11 and flows into the second fuel cell pressure reducing valve through the input end of the second fuel cell pressure reducing valve. The second fuel cell pressure reducing valve is adjusted according to the target pressure value of the first branch to realize the first branch supplying hydrogen to the fuel cell. The waste hydrogen generated when the fuel cell is in the working state is transported to the second hydrogen engine pressure reducing valve through the third branch and then supplied to the hydrogen engine through the second branch to realize the reuse of waste hydrogen.

[0061] Step S1074, adjusting the pressure reducing valve of the second-stage hydrogen engine so that the hydrogen pressure of the second branch is at the target pressure value of the second branch.

[0062] In step S1074, the second target power is determined according to the first target power and the required power of the whole vehicle, and the target pressure value of the second branch is determined according to the second target power and the calibration data. The hydrogen output from the hydrogen source enters the first-level pressure reducing valve from the input end of the first-level pressure reducing valve for first-level pressure regulation. Another part of the hydrogen after the first-level pressure regulation flows out from the output end of the first-level pressure reducing valve, flows into the second-level hydrogen engine pressure reducing valve through the first input end of the second-level hydrogen engine pressure reducing valve, and the second-level hydrogen engine pressure reducing valve is adjusted according to the target pressure value of the second branch, so that the second branch supplies hydrogen to the fuel cell (at this time, the hydrogen in the second branch includes the hydrogen output from the hydrogen source and the waste hydrogen transported by the third branch), thereby realizing the recycling of waste hydrogen.

[0063] Combination Figure 3 As shown, in a specific embodiment of the present application, when the first target power meets the preset condition, a target control strategy set is generated, including:

[0064] Step S1061, when the first target power is less than the first preset power threshold, generates a first target control strategy set in the target control strategy set, and the first target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the first target pressure value of the first branch, and the hydrogen pressure of the second branch is at the first target pressure value of the second branch, and the hydrogen pressure of the third branch is in a preset range.

[0065] In step S1061, when the first target power is less than the first preset power threshold, the first target control strategy set in the target control strategy set is generated, and the first target control strategy set is used to adjust the opening of the secondary fuel cell pressure reducing valve so that the hydrogen pressure of the first branch is at the first target pressure value of the first branch. At this time, the waste hydrogen generated by the fuel cell enters the third branch, and the hydrogen pressure of the third branch is greater than zero. The first target control strategy set is also used to adjust the pressure reduction of the secondary hydrogen engine so that the hydrogen pressure of the second branch is at the first target pressure value of the second branch. Among them, the first target pressure value of the second branch can be a fixed value or an interval value, so as to realize the constant pressure output of the fuel cell and the multi-stage variable pressure output of the hydrogen engine.

[0066] Combination Figure 3 As shown, in a specific embodiment of the present application, when the first target power meets the preset condition, a target control strategy set is generated, including:

[0067] Step S1062, when the first target power is greater than or equal to the first preset power threshold and less than the second preset power threshold, generate a second target control strategy set in the target control strategy set, the second target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the second target pressure value of the first branch, and the hydrogen pressure of the second branch is at the second target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset range.

[0068] In step S1062, when the first target power is greater than the first preset power threshold, if the first target power is greater than or equal to the first preset power threshold and less than the second preset power threshold, it means that the fuel cell needs more hydrogen to meet the higher power output demand, and the opening of the secondary fuel cell pressure reducing valve can be adjusted so that the hydrogen pressure of the first branch is at the second target pressure value of the first branch, providing more hydrogen supply. At this time, the waste hydrogen generated by the fuel cell enters the third branch, and the hydrogen pressure of the third branch is greater than zero. The first target control strategy set is also used to adjust the decompression of the secondary hydrogen engine so that the hydrogen pressure of the second branch is at the second target pressure value of the second branch. Among them, the second target pressure value of the second branch can be a fixed value or an interval value, so as to realize the constant pressure output of the fuel cell and the multi-stage variable pressure output of the hydrogen engine.

[0069] Combination Figure 3 As shown, in a specific embodiment of the present application, when the first target power meets the preset condition, a target control strategy set is generated, including:

[0070] Step S1063, when the first target power is greater than or equal to the second preset power threshold and less than the third preset power threshold, generate a third target control strategy set in the target control strategy set, and the third target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the third target pressure value of the first branch, and the hydrogen pressure of the second branch is at the third target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset range.

[0071] In step S1063, the first target power is judged against the second preset power threshold and the third preset power threshold. When the first target power is greater than or equal to the second preset power threshold and less than the third preset power threshold, the opening of the secondary fuel cell pressure reducing valve can be adjusted so that the hydrogen pressure of the first branch is at the third target pressure value of the first branch, that is, the hydrogen pressure is increased to the highest stage to support the maximum power output of the fuel cell. Among them, the third preset power threshold is the highest power threshold at which the fuel cell can operate safely, and the first target power does not exceed the third preset power threshold. At this time, since the waste hydrogen generated by the fuel cell enters the third branch, the hydrogen pressure of the third branch is greater than zero. The first target control strategy set is also used to adjust the decompression of the secondary hydrogen energy engine so that the hydrogen pressure of the second branch is at the third target pressure value of the second branch. Among them, the second target pressure value of the second branch can be a fixed value or an interval value, so as to realize the constant pressure output of the fuel cell and the multi-stage variable pressure output of the hydrogen energy engine.

[0072] Therefore, by precisely controlling the hydrogen pressure in stages, it is possible to ensure that the fuel cell can operate efficiently under different power requirements. By avoiding unnecessary high-pressure operation, the pressure cycle of the fuel cell can be reduced and its service life can be extended. Using lower hydrogen pressure when power demand is low can reduce energy waste and improve overall energy efficiency.

[0073] In another optional embodiment of the present application, the integrated pressure reducing valve can also be controlled according to the vehicle control strategy, wherein the second target power and the target pressure value of the second branch have a one-to-many correspondence, and the second target power and the target pressure value of the second branch have a one-to-one correspondence. At this time, the multi-stage voltage-changing output of the fuel cell and the constant-pressure output of the hydrogen engine can be achieved.

[0074] Combination Figure 4 As shown, according to another aspect of an embodiment of the present invention, a control device for a hydrogen supply system is also provided. It should be noted that the device can be used to execute the control method in the above embodiment. The control device includes an acquisition module 40, a determination module 42 and a control module 44. The acquisition module 40 is used to acquire the required power of the whole vehicle; the determination module 42 is used to determine the first target power of the fuel cell and the second target power of the hydrogen engine according to the required power of the whole vehicle; the control module 44 is used to generate a target control strategy set when the first target power meets the preset conditions. The target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport hydrogen generated by the fuel cell to the hydrogen engine.

[0075] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0076] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0077] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0078] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0079] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0080] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0082] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0083] In addition, each functional unit in each embodiment of the present invention 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. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0084] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or 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, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0085] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hydrogen supply system, characterized in that: The hydrogen supply system comprises a hydrogen source (1), a fuel cell (2) and a hydrogen engine (3), and the hydrogen supply system further comprises: An integrated pressure reducing valve (10), wherein a first input end of the integrated pressure reducing valve (10) is communicated with an output end of the hydrogen source (1), a first output end of the integrated pressure reducing valve (10) is communicated with a first branch (21), the first branch (21) is used to provide hydrogen to the fuel cell (2), a second output end of the integrated pressure reducing valve (10) is communicated with a second branch (22), the second branch (22) is used to provide hydrogen to the hydrogen engine (3), a first end of a third branch (23) is used to collect hydrogen generated by the fuel cell (2), and a second end of the third branch (23) is communicated with a second input end of the integrated pressure reducing valve (10).

2. The hydrogen supply system according to claim 1, characterized in that: The integrated pressure reducing valve (10) comprises: A first-stage pressure reducing valve (11), wherein an input end of the first-stage pressure reducing valve (11) is connected to an output end of the hydrogen source (1); A secondary fuel cell pressure reducing valve (121), wherein the output end of the primary pressure reducing valve (11) is connected to the input end of the secondary fuel cell pressure reducing valve (121), and the output end of the secondary fuel cell pressure reducing valve (121) is connected to the first branch (21); A two-stage hydrogen engine pressure reducing valve (122), wherein the output end of the first-stage pressure reducing valve (11) is communicated with the first input end of the two-stage hydrogen engine pressure reducing valve (122), the output end of the two-stage hydrogen engine pressure reducing valve (122) is communicated with the second branch (22), and the second end of the third branch (23) is communicated with the second input end of the two-stage hydrogen engine pressure reducing valve (122).

3. A vehicle, characterized in that: The vehicle comprises the hydrogen supply system according to any one of claims 1 to 2.

4. A method for controlling a hydrogen supply system, characterized in that: The control method is used to control the hydrogen supply system according to any one of claims 1 to 2, and the control method comprises: Obtain the required power of the vehicle; Determining a first target power of the fuel cell and a second target power of the hydrogen engine according to the required power of the entire vehicle; When the first target power meets the preset conditions, a target control strategy set is generated, and the target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport the hydrogen generated by the fuel cell to the hydrogen engine.

5. The control method according to claim 4, characterized in that: When the first target power satisfies the preset condition, generating the target control strategy set includes: determining a target pressure value of the first branch according to the first target power; determining a target pressure value of the second branch according to the second target power; adjusting the secondary fuel cell pressure reducing valve so that the hydrogen pressure of the first branch is at a target pressure value of the first branch; The two-stage hydrogen engine pressure reducing valve is adjusted so that the hydrogen pressure of the second branch is at a target pressure value of the second branch.

6. The control method according to claim 4 or 5, characterized in that: When the first target power satisfies the preset condition, generating the target control strategy set includes: When the first target power is less than the first preset power threshold, a first target control strategy set in the target control strategy set is generated, and the first target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the first target pressure value of the first branch, and the hydrogen pressure of the second branch is at the first target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset interval.

7. The control method according to claim 6, characterized in that: When the first target power satisfies the preset condition, generating the target control strategy set includes: When the first target power is greater than or equal to the first preset power threshold and less than the second preset power threshold, a second target control strategy set in the target control strategy set is generated, and the second target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the second target pressure value of the first branch, and the hydrogen pressure of the second branch is at the second target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset range.

8. The control method according to claim 7, characterized in that: When the first target power satisfies the preset condition, generating the target control strategy set includes: When the first target power is greater than or equal to the second preset power threshold and less than the third preset power threshold, a third target control strategy set in the target control strategy set is generated, and the third target control strategy set is used to adjust the opening of the integrated pressure reducing valve so that the hydrogen pressure of the first branch is at the third target pressure value of the first branch, and the hydrogen pressure of the second branch is at the third target pressure value of the second branch, and the hydrogen pressure of the third branch is in the preset range.

9. A control device for a hydrogen supply system, characterized in that: The control device executes the control method according to any one of claims 4 to 8, and the control device comprises: An acquisition module, the acquisition module is used to acquire the required power of the whole vehicle; A determination module, the determination module is used to determine a first target power of the fuel cell and a second target power of the hydrogen engine according to the required power of the whole vehicle; A control module, wherein the control module is used to generate a target control strategy set when the first target power meets a preset condition, and the target control strategy set is used to adjust the integrated pressure reducing valve so that the hydrogen pressures of the first branch and the second branch of the hydrogen supply system are both at the target pressure values, and the hydrogen pressure of the third branch of the hydrogen supply system is in a preset interval, wherein the first branch is used to transport hydrogen to the fuel cell, the second branch is used to transport hydrogen to the hydrogen engine, and the third branch is used to transport the hydrogen generated by the fuel cell to the hydrogen engine.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method according to any one of claims 4 to 8.

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