Hybrid power system based on ammonia-hydrogen engine and hydrogen fuel cell and application

Abstract

The invention discloses a hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell and application, the hybrid power system comprises an ammonia fuel supply mechanism, a hydrogen fuel cell power mechanism, an ammonia-hydrogen engine power mechanism and a tail gas recovery processing mechanism, the gasifier is respectively communicated with the hydrogen fuel cell power mechanism, the ammonia hydrogen engine power mechanism and the tail gas recovery processing mechanism; the hydrogen fuel cell power mechanism comprises an ammonia decomposer, an ammonia separator, a hydrogen fuel cell and a transmission device which are sequentially connected in series, and the hydrogen fuel cell is electrically communicated with the transmission device; the ammonia separator and the hydrogen fuel cell are both communicated with the ammonia-hydrogen engine power mechanism; the ammonia-hydrogen engine power mechanism is respectively communicated with the tail gas recovery processing mechanism and is connected with the transmission device. According to the hybrid power system based on the ammonia-hydrogen engine and the hydrogen fuel cell and application, efficient energy output is achieved, and efficient utilization of fuel is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of clean energy system design, and in particular relates to a hybrid power system based on an ammonia hydrogen engine and a hydrogen fuel cell. Background Art

[0002] Proton exchange membrane fuel cells (PEMFCs) using hydrogen as fuel have high energy conversion rates and high power density. Therefore, hydrogen fuel cells are a very promising form of energy utilization. However, due to the low energy density of hydrogen and the high pressure required for storage, there are problems such as high costs in its storage, transportation and refueling process, which restricts its application as a zero-carbon fuel. Ammonia has the advantages of high energy density, low storage and transportation costs and high safety, and is an ideal hydrogen carrier. In addition, ammonia fuel has a high octane number and good anti-knock performance. It can increase the compression ratio of the engine to increase the output power, so that the thermal efficiency of the engine reaches more than 50%, which is twice that of ordinary fuel vehicles. However, ammonia also has defects such as slow combustion speed, high ignition energy, and narrow flammable limit range, which restricts the development of pure ammonia combustion energy supply technology. Therefore, the use of zero-carbon fuels such as hydrogen and ammonia needs to overcome the problems of hydrogen storage and transportation and the combustion of ammonia fuel. In response to these problems, hydrogen carried by ammonia and ammonia fuel mixed with hydrogen combustion are important solutions. In January 2023, Fuda Zijin Company and King Long Bus released the country's first ammonia-hydrogen fuel cell bus, which achieved immediate production and use of hydrogen-ammonia energy on buses by coupling low-temperature ammonia hydrogen production with hydrogen fuel cell technology. In April 2023, Dongfeng Commercial Vehicles exhibited a newly developed ammonia-hydrogen engine that can achieve hydrogen-ammonia fusion combustion, greatly expanding the application scope of zero-carbon fuel power. Summary of the invention

[0003] To solve the above problems, the present invention provides a hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell, which uses a fuel supply method that combines direct supply of liquid ammonia gasification with ammonia to produce hydrogen, and adopts two systems, an ammonia-hydrogen engine and a hydrogen fuel cell. While meeting the hydrogen concentration of the fuel used by the fuel cell, the low hydrogen concentration exhaust gas is transported to the ammonia-hydrogen engine, thereby realizing efficient utilization of the fuel.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell, including an ammonia fuel supply mechanism, a hydrogen fuel cell power mechanism, an ammonia-hydrogen engine power mechanism and an exhaust gas recovery and processing mechanism, the ammonia fuel supply mechanism includes a gasifier, and the gasifier is respectively connected to the hydrogen fuel cell power mechanism, the ammonia-hydrogen engine power mechanism and the exhaust gas recovery and processing mechanism; the hydrogen fuel cell power mechanism includes an ammonia decomposer, an ammonia separator, a hydrogen fuel cell and a transmission device, the ammonia decomposer, the ammonia separator and the hydrogen fuel cell are arranged in series in sequence, and the hydrogen fuel cell is electrically connected to the transmission device; the ammonia separator and the hydrogen fuel cell are both connected to the ammonia-hydrogen engine power mechanism; the ammonia-hydrogen engine power mechanism is respectively connected to the exhaust gas recovery and processing mechanism, and the ammonia-hydrogen engine power mechanism is connected to the transmission device and can provide power for the transmission device.

[0005] Furthermore, the ammonia fuel supply mechanism includes a liquid ammonia tank, a liquid ammonia supply valve and a liquid ammonia pump, which are connected in sequence. The liquid ammonia pump is connected to the vaporizer, and the outlet of the vaporizer is connected to the first supply pipeline. The other end of the first supply pipeline is connected to the ammonia decomposer, and a first valve is provided on the first supply pipeline.

[0006] Furthermore, a second supply pipeline and a third supply pipeline are opened on the first supply pipeline, the second supply pipeline is connected to the exhaust gas recovery and processing mechanism, the third supply pipeline is connected to the ammonia hydrogen engine power mechanism, a second valve is opened on the second supply pipeline, and a third valve is opened on the third supply pipeline.

[0007] Furthermore, the hydrogen fuel cell power mechanism also includes a pressure reducing valve, a power battery and a motor; the ammonia separator is connected to the hydrogen fuel cell through a pipeline, and a pressure reducing valve is provided on the pipeline connecting the ammonia separator and the hydrogen fuel cell; the outlet of the hydrogen fuel cell is electrically connected to the power battery, and the power battery, the motor and the transmission device are electrically connected in sequence.

[0008] Furthermore, the ammonia separator is connected to an ammonia-hydrogen recovery pipeline, which is also connected to an ammonia-hydrogen engine power mechanism. A hydrogen recovery pipeline is provided at the anode outlet of the hydrogen fuel cell, which is connected to the ammonia-hydrogen engine power mechanism.

[0009] Furthermore, the ammonia-hydrogen engine power mechanism includes a mixer, a mixer injection valve and an ammonia-hydrogen engine, the mixer is connected to the mixed gas injection valve, and the mixed gas injection valve is connected to the inlet of the ammonia-hydrogen engine.

[0010] Furthermore, the mixer is communicated with the gasifier, the ammonia separator and the cathode outlet of the hydrogen fuel cell respectively.

[0011] Furthermore, the exhaust gas recovery and processing mechanism includes an exhaust gas recovery pipeline and an SCR device. One end of the exhaust gas recovery pipeline is connected to the ammonia hydrogen engine power mechanism, and the other end of the exhaust gas recovery pipeline is connected to the gasifier, and the gasifier is connected to the SCR device.

[0012] Furthermore, the ammonia decomposition device is filled with an ammonia decomposition catalyst, and the ammonia decomposition catalyst is a ruthenium-based catalyst or a nickel-based catalyst.

[0013] An application of a hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell is used in the automotive field.

[0014] The hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell described in the present invention connects an ammonia decomposer to the ammonia-hydrogen engine and the hydrogen fuel cell respectively, mixes ammonia and hydrogen as fuel for the ammonia-hydrogen engine power mechanism, effectively improves the energy output of the power mechanism and promotes the efficient combustion of hydrogen; during the operation process, the gases produced by the ammonia decomposition process, including the produced hydrogen, nitrogen and unreacted ammonia, are fully utilized, ensuring the efficient operation of the hydrogen fuel cell and the ammonia-hydrogen engine while reducing the overall energy consumption and improving the energy reuse rate of the system; and the heat of the exhaust gas after the operation of the ammonia-hydrogen engine is effectively utilized, reducing the energy waste of the system and the impact of the exhaust gas after combustion on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of a hybrid power system based on an ammonia hydrogen engine and a hydrogen fuel cell according to the present invention. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, a hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell includes an ammonia fuel supply mechanism, a hydrogen fuel cell power mechanism, an ammonia-hydrogen engine power mechanism, and an exhaust gas recovery and processing mechanism;

[0018] The ammonia fuel supply mechanism is respectively connected to the hydrogen fuel cell power mechanism, the ammonia hydrogen engine power mechanism and the tail gas recovery and processing mechanism;

[0019] The hydrogen fuel cell power mechanism comprises an ammonia decomposer 8, an ammonia separator 9, a hydrogen fuel cell 11 and a transmission device 17. The ammonia decomposer 8, the ammonia separator 8 and the hydrogen fuel cell 11 are sequentially arranged in series, and the hydrogen fuel cell 11 is electrically connected to the transmission device 17; the ammonia separator 8 and the hydrogen fuel cell 11 are both connected to the ammonia hydrogen engine power mechanism;

[0020] The ammonia-hydrogen engine power mechanism is communicated with the exhaust gas recovery and processing mechanism respectively, and the ammonia-hydrogen engine power mechanism is connected to the transmission device 17 and can provide power for the transmission device 17.

[0021] The ammonia fuel supply mechanism includes a liquid ammonia tank 1, a liquid ammonia supply valve 2, a liquid ammonia pump 3, a vaporizer 4, a first supply pipeline 19, a first valve 5, a second supply pipeline 20, a second valve 6, a third supply pipeline 21, a third valve 7 and a third supply pipeline 21; the liquid ammonia tank 1 is connected to the liquid ammonia pump 3 via the liquid ammonia supply valve 2, the liquid ammonia pump 3 is connected to the vaporizer 4, the liquid ammonia pump 3 transports liquid ammonia to the vaporizer 4, the liquid ammonia supply valve 2 is used to adjust the flow rate of liquid ammonia entering the liquid ammonia pump 3 from the liquid ammonia tank 1, and realize accurate control of the flow rate of the introduced liquid ammonia; the outlet of the vaporizer 4 is connected to one end of the first supply pipeline 19, the other end of the first supply pipeline 19 is connected to the ammonia decomposer 8, the first supply pipeline 19 is provided with the second supply pipeline 20 and the third supply pipeline 21, the second supply pipeline 20 is connected to the tail gas recovery and treatment mechanism, the third supply pipeline 21 is connected to the exhaust gas recovery and treatment mechanism, and the third supply pipeline 21 is connected to the exhaust gas recovery and treatment mechanism. Three supply pipelines 21 are connected to the ammonia-hydrogen engine power mechanism; liquid ammonia is gasified into ammonia gas in the gasifier 4 and then introduced into the first supply pipeline 19, and is divided into the second supply pipeline 20 and the third supply pipeline 21; in order to control the flow rate of liquid ammonia in different supply pipelines, preferably, a first valve 5 is provided on the first supply pipeline 19, a second valve 6 is provided on the second supply pipeline 20, and a third valve 7 is provided on the third supply pipeline 21, and the flow rate of liquid ammonia entering different supply pipelines is controlled by adjusting the opening of different valves to meet the use of liquid ammonia in different mechanisms; specifically, ammonia gas enters the ammonia decomposer 8 via the first supply pipeline 19 and the first valve 5, ammonia gas enters the exhaust gas recovery and processing mechanism via the second supply pipeline 20 and the second valve 6, and ammonia gas enters the ammonia-hydrogen engine power mechanism via the third supply pipeline 21 and the third valve 7.

[0022] The hydrogen fuel cell power mechanism includes an ammonia separator 9, a pressure reducing valve 10, a hydrogen fuel cell 11, a power battery 15, a motor 16, a transmission device 17, an ammonia recovery pipeline 23 and a hydrogen recovery pipeline 24; the ammonia decomposer 8 is used to receive the ammonia gasified by the gasifier 4, and decompose the ammonia into hydrogen and nitrogen; the ammonia decomposer 8 is connected to the ammonia separator 9, and the decomposed hydrogen and nitrogen are discharged from the ammonia decomposer 8 and directly enter the ammonia separator 9. Preferably, the ammonia decomposer 8 is filled with an ammonia decomposition catalyst, such as a ruthenium-based catalyst or a nickel-based catalyst, to improve the decomposition efficiency and rate of ammonia; the ammonia separator 9 can decompose the hydrogen formed by the decomposition into hydrogen and nitrogen. The ammonia separator 9 is connected to the ammonia recovery pipeline 23, the ammonia recovery pipeline 23 is connected to the ammonia-hydrogen engine power mechanism, the ammonia separator 9 is connected to the hydrogen fuel cell 11 through a pipeline, and the pipeline connected to the ammonia separator 9 and the hydrogen fuel cell 11 is provided with the pressure reducing valve 10, which is used to control the pressure of the gas entering the hydrogen fuel cell 11 from the ammonia separator 9; wherein the unreacted ammonia after separation by the ammonia separator 9 is passed into the ammonia recovery pipeline 23, and the unreacted ammonia is transported to the ammonia-hydrogen engine power mechanism through the ammonia recovery pipeline 23 for the ammonia-hydrogen engine power mechanism. Provide power; the hydrogen and nitrogen separated by the ammonia separator 9 are transported to the hydrogen fuel cell 11 through the pressure reducing valve 10 to provide fuel for the hydrogen fuel cell 11 to generate electricity; the anode inlet of the hydrogen fuel cell 11 is connected to the ammonia separator 9 and is used to input hydrogen, and the cathode inlet of the hydrogen fuel cell 11 is used to input air, and the hydrogen and the input air undergo an electrochemical reaction inside the hydrogen fuel cell 11 to generate electrical energy; the outlet of the hydrogen fuel cell 11 is electrically connected to the power battery 15, and the power battery 15, the motor 16 and the transmission device 17 are electrically connected in sequence, and the electrical energy generated inside the hydrogen fuel cell 11 can be transported to the power The battery 15 then transmits the electrical energy to the transmission device 17 via the power battery 15 and the motor 16, thereby driving the transmission device 17 to operate; in order to increase the reuse rate of hydrogen during the power generation process of the hydrogen fuel cell 11 and improve the comprehensive power output of the system, preferably, the anode outlet of the hydrogen fuel cell 11 is provided with the hydrogen recovery pipeline 24, and the hydrogen recovery pipeline 24 is connected to the ammonia-hydrogen engine power mechanism. Since the hydrogen concentration required for power generation by the hydrogen fuel cell 11 is high, the remaining low-concentration hydrogen can be transported to the ammonia-hydrogen engine power mechanism through the hydrogen recovery pipeline 24 after the hydrogen fuel cell 11 works, thereby realizing efficient use of fuel.

[0023] The ammonia-hydrogen engine power mechanism includes a mixer 12, a mixer injection valve 13 and an ammonia-hydrogen engine 14, wherein the mixer 12 is connected to the mixed gas injection valve 13, and the mixed gas injection valve 13 is connected to the inlet of the ammonia-hydrogen engine 14, wherein the mixer 12 is respectively connected to the gasifier 4, the ammonia separator 9 and the cathode outlet of the hydrogen fuel cell 11, the mixer 12 is connected to the gasifier 4 through the third supply pipeline 21, the mixer 12 is connected to the ammonia separator 9 through the ammonia recovery pipeline 23, the mixer 12 is connected to the cathode outlet of the hydrogen fuel cell 11 through the hydrogen recovery pipeline 24, the third supply pipeline 21 is connected to the ammonia recovery pipeline 23, part of the ammonia in the gasifier 4 enters the mixer 12 through the third supply pipeline 21, and at the same time, a small amount of ammonia separated by the ammonia separator 9 is recovered to the third supply pipeline 21 via the ammonia recovery pipeline 23. , and enter the mixer 12 together with the gasified ammonia through the third valve 7. The remaining hydrogen after power generation in the hydrogen fuel cell 11 enters the mixer 12 through the hydrogen recovery pipeline 24. After the hydrogen is premixed with ammonia and air in the mixer 12, it is sprayed into the ammonia-hydrogen engine 14 by the mixed gas injection valve 13 for combustion to generate power, and then the power is transmitted to the transmission device 17 to drive the transmission device 17 to operate, forming a hybrid power system with the ammonia-hydrogen engine 14; by coupling the hydrogen fuel cell 11 with the ammonia-hydrogen engine 14, the hydrogen, nitrogen and unreacted ammonia generated in the ammonia decomposition process are effectively utilized; by using hydrogen and ammonia as fuels of the ammonia-hydrogen engine 14, not only a greater power output is provided, but also the heat in the combustion process can be efficiently utilized, with a more efficient energy conversion rate, and the mixed combustion of ammonia and hydrogen in the ammonia-hydrogen engine 14 can further improve the combustion efficiency, thereby enhancing the power of the engine.

[0024] The tail gas recovery and treatment mechanism includes a tail gas recovery pipeline 22 and an SCR device 18. One end of the tail gas recovery pipeline 22 is connected to the ammonia hydrogen engine 14, and the other end of the tail gas recovery pipeline 22 is connected to the gasifier 4. The gasifier 4 is connected to the SCR device 18. The high-temperature tail gas (containing NO) generated during the combustion process of the ammonia hydrogen engine 14 xAfter the exhaust gas is discharged, the exhaust gas enters the gasifier 4 through the exhaust gas recovery pipeline 22, exchanges heat with the liquid ammonia in the gasifier 4, promotes the gasification of the liquid ammonia, and recovers the waste heat of the exhaust gas to provide energy for the gasification of the liquid ammonia, thereby improving the energy utilization rate of the system and reducing energy consumption; in order to reduce the impact of nitrogen oxides in the exhaust gas after heat exchange on the environment, preferably, the second supply pipeline 20 is connected to the SCR device 18, and part of the ammonia gas in the gasifier 4 after gasification is discharged from the gasifier, enters the SCR device 18 through the second supply pipeline 20 and the second valve 6, and the NO in the exhaust gas after heat exchange is x It is reduced to nitrogen and water to achieve tail gas treatment, reducing the impact of nitrogen oxides on the environment.

[0025] The hybrid power system based on the ammonia-hydrogen engine and the hydrogen fuel cell connects the ammonia decomposer to the ammonia-hydrogen engine and the hydrogen fuel cell respectively, mixes ammonia and hydrogen as fuel for the ammonia-hydrogen engine power mechanism, effectively improves the energy output of the power mechanism and promotes the efficient combustion of hydrogen; during the operation process, the gases produced by the ammonia decomposition process, including the produced hydrogen, nitrogen and unreacted ammonia, are fully utilized, ensuring the efficient operation of the hydrogen fuel cell and the ammonia-hydrogen engine while reducing the overall energy consumption and improving the energy reuse rate of the system; and the heat of the exhaust gas after the operation of the ammonia-hydrogen engine is effectively utilized, reducing the energy waste of the system and the impact of the exhaust gas after combustion on the environment.

[0026] The operation mode of the hybrid power system based on the ammonia hydrogen engine and the hydrogen fuel cell is further described below in conjunction with the accompanying drawings.

[0027] The liquid ammonia supply valve 2 is opened, and the liquid ammonia is passed from the liquid ammonia tank 1 into the vaporizer 4 through the liquid ammonia pump 3, and the vaporizer 4 vaporizes the liquid ammonia into ammonia gas; the first valve 5 is opened, and the ammonia gas is transported from the first supply pipeline 19 to the ammonia decomposer 8 for high-temperature decomposition into hydrogen and nitrogen; the hydrogen, nitrogen and undecomposed ammonia are transported to the ammonia separator 9, and the hydrogen and nitrogen separated in the ammonia separator 9 enter the hydrogen fuel cell 11 through the pressure reducing valve 10. After the hydrogen fuel cell 11 generates electricity, the generated electrical energy is transported to the power battery 15, and the kinetic energy is transported to the transmission device 17 through the motor 16.

[0028] The third valve 7 is opened, and the unreacted ammonia separated in the ammonia separator 9 enters the ammonia recovery pipeline 23. A small amount of ammonia in the ammonia recovery pipeline 23 and the gasified ammonia are jointly introduced into the mixer 12 through the third supply pipeline 21. At the same time, the remaining hydrogen and nitrogen at the anode outlet of the hydrogen fuel cell 11 enter the hydrogen recovery pipeline 24. The mixer 12 receives the hydrogen and nitrogen transported by the hydrogen recovery pipeline 24, inputs air, and mixes with ammonia, and then opens the mixed gas injection valve 13 to inject the mixed gas composed of hydrogen and ammonia into the ammonia hydrogen engine 14 to perform work, and the energy is transmitted to the transmission device 17 to form a hybrid power system; the exhaust gas discharged from the ammonia hydrogen engine 14 enters the gasifier 4, and is transmitted to the SCR device 18 after heat exchange in the gasifier 4. At this time, the second valve 6 is opened to pass the partially gasified ammonia in the gasifier 4 to the SCR device 18, and the input ammonia reduces the NOx pollutants and then discharges the system.

[0029] The application of the hybrid power system based on an ammonia hydrogen engine and a hydrogen fuel cell is in the automotive field.

[0030] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A hybrid power system based on an ammonia-hydrogen engine and a hydrogen fuel cell, comprising an ammonia fuel supply mechanism, a hydrogen fuel cell power mechanism, an ammonia-hydrogen engine power mechanism and an exhaust gas recovery and processing mechanism, characterized in that: The ammonia fuel supply mechanism includes a gasifier, and the gasifier is respectively connected to the hydrogen fuel cell power mechanism, the ammonia hydrogen engine power mechanism and the tail gas recovery and processing mechanism; The hydrogen fuel cell power mechanism comprises an ammonia decomposer, an ammonia separator, a hydrogen fuel cell and a transmission device, wherein the ammonia decomposer, the ammonia separator and the hydrogen fuel cell are sequentially arranged in series, and the hydrogen fuel cell is electrically connected to the transmission device; the ammonia separator and the hydrogen fuel cell are both connected to the ammonia-hydrogen engine power mechanism; The ammonia-hydrogen engine power mechanism is communicated with the exhaust gas recovery and processing mechanism respectively, and the ammonia-hydrogen engine power mechanism is connected to the transmission device and can provide power for the transmission device.

2. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The ammonia fuel supply mechanism includes a liquid ammonia tank, a liquid ammonia supply valve and a liquid ammonia pump, the liquid ammonia tank, the liquid ammonia supply valve and the liquid ammonia pump are connected in sequence, the liquid ammonia pump is connected to the vaporizer, the outlet of the vaporizer is connected to a first supply pipeline, the other end of the first supply pipeline is connected to the ammonia decomposer, and a first valve is provided on the first supply pipeline.

3. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 2, characterized in that: The second supply pipeline and the third supply pipeline are opened on the first supply pipeline, the second supply pipeline is connected to the exhaust gas recovery and processing mechanism, the third supply pipeline is connected to the ammonia-hydrogen engine power mechanism, a second valve is opened on the second supply pipeline, and a third valve is opened on the third supply pipeline.

4. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The hydrogen fuel cell power mechanism also includes a pressure reducing valve, a power battery and a motor; the ammonia separator is connected to the hydrogen fuel cell through a pipeline, and the pressure reducing valve is arranged on the pipeline connected to the ammonia separator and the hydrogen fuel cell; the outlet of the hydrogen fuel cell is electrically connected to the power battery, and the power battery, the motor and the transmission device are electrically connected in sequence.

5. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The ammonia separator is connected to an ammonia-hydrogen recovery pipeline, which is also connected to the ammonia-hydrogen engine power mechanism. The anode outlet of the hydrogen fuel cell is provided with the hydrogen recovery pipeline, which is connected to the ammonia-hydrogen engine power mechanism.

6. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The ammonia-hydrogen engine power mechanism includes a mixer, a mixer injection valve and an ammonia-hydrogen engine. The mixer is connected to the mixed gas injection valve, and the mixed gas injection valve is connected to the inlet of the ammonia-hydrogen engine.

7. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 6, characterized in that: The mixer is communicated with the gasifier, the ammonia separator and a cathode outlet of the hydrogen fuel cell respectively.

8. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The exhaust gas recovery and processing mechanism includes an exhaust gas recovery pipeline and an SCR device. One end of the exhaust gas recovery pipeline is connected to the ammonia-hydrogen engine power mechanism, and the other end of the exhaust gas recovery pipeline is connected to the gasifier, and the gasifier is connected to the SCR device.

9. The hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to claim 1, characterized in that: The ammonia decomposer is filled with an ammonia decomposition catalyst, and the ammonia decomposition catalyst is a ruthenium-based catalyst or a nickel-based catalyst.

10. An application of a hybrid power system of an ammonia hydrogen engine and a hydrogen fuel cell according to any one of claims 1 to 9, characterized in that: Used in the automotive field.

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