Hydrogen fuel power system and hydrogen fuel vehicle

Abstract

The invention discloses a hydrogen fuel power system and a hydrogen fuel vehicle, wherein the hydrogen fuel power system comprises a hydrogen fuel internal combustion engine, a hydrogen storage device, a hydrogen production device and a hydrogen circulation pump, wherein the hydrogen fuel internal combustion engine is formed with a compression chamber and a combustion chamber connected with the compression chamber, the hydrogen storage device is formed with a hydrogen storage medium cavity and a medium cavity, the hydrogen storage medium cavity is used to store a hydrogen-containing medium, and the medium cavity is used to store a hydrogen-free medium, the hydrogen production device comprises a hydrogen production reactor, the inlet of the hydrogen production reactor is connected with the hydrogen storage medium cavity, the hydrogen production reactor reduces the hydrogen-containing medium into hydrogen after being heated by the tail gas discharged from the combustion chamber, the outlet of the hydrogen production reactor comprises a first outlet and a second outlet, the first outlet is connected with the medium cavity, and is used to transport the hydrogen-free medium after the reaction to the medium cavity, the hydrogen circulation pump, the inlet is connected with the second outlet, and the outlet is connected with the combustion chamber, and is used to pressurize the hydrogen in the hydrogen production reactor and transport it to the combustion chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel vehicles, and in particular to a hydrogen fuel power system and a hydrogen fuel vehicle. Background Art

[0002] At present, the power research of hydrogen fuel vehicles mainly focuses on new power devices such as hydrogen fuel internal combustion engines and hydrogen fuel cells. Compared with hydrogen fuel cells, hydrogen fuel internal combustion engines have low costs, wide working range, and can use industrial waste hydrogen, with better power, economy and practicality. In the existing hydrogen fuel power system, the high-temperature and high-pressure exhaust gas after the combustion of hydrogen fuel internal combustion engines is usually directly discharged after treatment, resulting in a lot of energy waste. Therefore, recycling the energy of exhaust gas in hydrogen fuel power systems is an urgent problem to be solved. Summary of the invention

[0003] The main purpose of the present invention is to provide a hydrogen fuel power system and a hydrogen fuel vehicle, aiming to solve the problem of how to recover and utilize the energy of exhaust gas in the hydrogen fuel power system.

[0004] To achieve the above object, the present invention proposes a method comprising:

[0005] A hydrogen fuel internal combustion engine is formed with a compression chamber and a combustion chamber connected to the compression chamber;

[0006] A hydrogen storage device is formed with a hydrogen storage medium cavity and a medium cavity, wherein the hydrogen storage medium cavity is used to store a hydrogen-containing medium, and the medium cavity is used to store a hydrogen-free medium;

[0007] A hydrogen production device, comprising a hydrogen production reactor, wherein the inlet of the hydrogen production reactor is connected to the hydrogen storage medium chamber, the hydrogen production reactor reduces the hydrogen-containing medium into hydrogen after being heated by the tail gas discharged from the combustion chamber, the outlet of the hydrogen production reactor comprises a first outlet and a second outlet, the first outlet is connected to the medium chamber, and is used to transport the hydrogen-free medium after the reaction to the medium chamber; and

[0008] A hydrogen circulation pump, whose inlet is connected to the second outlet and whose outlet is connected to the combustion chamber, is used for pressurizing the hydrogen in the hydrogen production reactor and then transporting it to the combustion chamber.

[0009] Optionally, the hydrogen fuel internal combustion engine is further formed with an expansion chamber;

[0010] The hydrogen production device further includes a pressurizing device, which includes:

[0011] A liquid reservoir for storing liquid to be vaporized;

[0012] a first drive pump, the inlet of which is connected to the liquid reservoir; and

[0013] A booster reactor, the inlet of the booster reactor includes a first feed port and a second feed port, the first feed port is connected to the outlet of the first drive pump, the second feed port is used to allow the exhaust gas flowing out of the hydrogen production device to flow into the booster reactor, so that the liquid absorbs the heat of the exhaust gas and then vaporizes, and the outlet of the booster reactor is connected to the expansion chamber to transport high-pressure exhaust gas to the expansion chamber.

[0014] Optionally, the liquid reservoir comprises an ammonia water reservoir, and the ammonia water reservoir is used to store ammonia water.

[0015] Optionally, the hydrogen fuel power system further includes an exhaust gas treatment device, and the exhaust gas treatment device further includes:

[0016] a denitrification device, the two ends of which are respectively connected to the booster reactor and the expansion chamber, for removing nitrogen oxides in the high-pressure tail gas; and

[0017] The inlet of the tail gas collector is connected to the expansion chamber, and the outlet of the tail gas collector includes an ammonia outlet and an exhaust port. The ammonia outlet is connected to the ammonia water storage, and the exhaust port is connected to the external atmosphere.

[0018] Optionally, the hydrogen production device further includes:

[0019] A connecting branch pipe connecting the hydrogen production reactor and the pressure boosting reactor;

[0020] a cut-off valve, disposed on the connecting branch pipe; and

[0021] The heat storage device is arranged on the connecting branch pipe and is used for absorbing the heat of the tail gas flowing out from the hydrogen production reactor.

[0022] Optionally, the hydrogen fuel power system further comprises a cooling device, a cooling circulation loop is formed on the cooling device, and a coolant tank and a coolant circulation pump are provided on the cooling circulation loop;

[0023] The hydrogen fuel internal combustion engine and the hydrogen production reactor are both arranged on the cooling circulation loop, the hydrogen fuel internal combustion engine is located on the side of the coolant circulation pump facing away from the coolant tank, and the hydrogen production reactor is located between the hydrogen fuel internal combustion engine and the coolant tank.

[0024] Optionally, the hydrogen production device further comprises a pressure-boosting reactor, and the pressure-boosting reactor is used to increase the pressure of the tail gas;

[0025] The booster reactor is arranged on the cooling circulation loop and is located between the hydrogen production reactor and the coolant tank.

[0026] Optionally, the hydrogen fuel power system further includes a pressure regulator, and two ends of the pressure regulator are respectively connected to the hydrogen circulation pump and the combustion chamber.

[0027] Optionally, the hydrogen fuel internal combustion engine comprises:

[0028] case;

[0029] A first stationary scroll structure, comprising a first stationary scroll ring provided on the housing;

[0030] A second stationary scroll structure, disposed on the housing, wherein the second stationary scroll structure is formed with two second stationary vortex circles extending in opposite directions;

[0031] a first movable scroll structure, rotatably mounted in the housing, wherein the first movable scroll structure is formed with two first movable vortex circles extending in opposite directions, wherein the two first movable vortex circles respectively define two first chambers together with the first stationary vortex circle and one of the second stationary vortex circles;

[0032] a second movable scroll structure, rotatably mounted in the housing, a second movable scroll ring formed on the second movable scroll structure, the second movable scroll ring and another second static scroll ring jointly define a second chamber, the second chamber is configured as an expansion chamber or a combustion chamber, and correspondingly, the two first chambers are configured as a combustion chamber and a compression chamber, or an expansion chamber and a compression chamber, the compression chamber is connected to the combustion chamber through a connecting pipe, and an air inlet is provided in the middle of the expansion chamber;

[0033] an air intake pipe connected to the combustion chamber and used for delivering hydrogen to the combustion chamber; and

[0034] an ignition device, disposed in the combustion chamber;

[0035] The tail gas after combustion in the combustion chamber flows into the hydrogen storage device to heat the hydrogen production reactor, and the tail gas after heat dissipation is processed and then flows back to the expansion chamber to expand and do work.

[0036] In addition, the present invention also provides a hydrogen fuel vehicle, which includes the above-mentioned hydrogen fuel power system.

[0037] In the technical solution of the present invention, the high-temperature exhaust gas discharged by the hydrogen fuel internal combustion engine flows into the hydrogen production reactor to heat the hydrogen production reactor. At the same time, the hydrogen-containing medium flowing into the hydrogen production reactor from the hydrogen storage device absorbs the heat of the exhaust gas and is reduced to hydrogen under the action of the catalyst. The produced hydrogen is sucked into the hydrogen circulation pump for compression, and the compressed high-pressure hydrogen is injected into the hydrogen fuel internal combustion engine. The hydrogen-free medium after dehydrogenation is transported to the medium cavity for storage. In this way, the hydrogen production reactor is used to produce hydrogen by utilizing the heat of the exhaust gas, avoiding the need for additional heating equipment to produce hydrogen. This not only helps to streamline the structure of the hydrogen fuel power system, but also can recycle the energy in the exhaust gas, thereby helping to improve the energy utilization rate of the hydrogen fuel power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 A schematic diagram of an embodiment of a hydrogen fuel power system provided by the present invention;

[0040] Figure 2 for Figure 1 A schematic cross-sectional view of a hydrogen fuel internal combustion engine;

[0041] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of a cooling scroll structure of a hydrogen fuel internal combustion engine;

[0042] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the cooling scroll structure of the hydrogen fuel internal combustion engine.

[0043] Description of Figure Numbers:

[0044]

[0045]

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0048] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] At present, the power research of hydrogen fuel vehicles mainly focuses on new power devices such as hydrogen fuel internal combustion engines and hydrogen fuel cells. Compared with hydrogen fuel cells, hydrogen fuel internal combustion engines have low costs, wide working range, and can use industrial waste hydrogen, with better power, economy and practicality. In the existing hydrogen fuel power system, the high-temperature and high-pressure exhaust gas after the combustion of hydrogen fuel internal combustion engines is usually directly discharged after treatment, resulting in a lot of energy waste.

[0051] In view of this, the present invention provides a hydrogen fuel power system, aiming to solve the problem of how to recycle the energy of tail gas in the hydrogen fuel power system. Figures 1 to 4 A schematic diagram of an embodiment of a hydrogen fuel power system provided by the present invention.

[0052] See also Figure 1 and Figure 2The hydrogen fuel power system 100 includes a hydrogen fuel internal combustion engine 1, a hydrogen storage device 2, a hydrogen production device 3 and a hydrogen circulation pump 4. The hydrogen fuel internal combustion engine 1 is formed with a compression chamber and a combustion chamber connected to the compression chamber. The hydrogen storage device 2 is formed with a hydrogen storage medium cavity and a medium cavity. The hydrogen storage medium cavity is used to store a hydrogen-containing medium, and the medium cavity is used to store a hydrogen-free medium. The hydrogen production device 3 includes a hydrogen production reactor 31. The inlet of the hydrogen production reactor 31 is connected to the hydrogen storage medium cavity. After being heated by the tail gas discharged from the combustion chamber, the hydrogen production reactor 31 reduces the hydrogen-containing medium to hydrogen. The outlet of the hydrogen production reactor 31 includes a first outlet and a second outlet. The first outlet is connected to the medium cavity to transport the reacted hydrogen-free medium to the medium cavity. The inlet of the hydrogen circulation pump 4 is connected to the second outlet, and the outlet is connected to the combustion chamber to pressurize the hydrogen in the hydrogen production reactor 31 and transport it to the combustion chamber.

[0053] In the technical solution of the present invention, the high-temperature exhaust gas discharged by the hydrogen fuel internal combustion engine 1 flows into the hydrogen production reactor 31 to heat the hydrogen production reactor 31. At the same time, the hydrogen-containing medium flowing into the hydrogen production reactor 31 from the hydrogen storage device 2 absorbs the heat of the exhaust gas and is reduced to hydrogen under the action of the catalyst. The produced hydrogen is sucked into the hydrogen circulation pump 4 for compression, and the compressed high-pressure hydrogen is injected into the hydrogen fuel internal combustion engine 1. The hydrogen-free medium after dehydrogenation is transported to the medium cavity for storage. In this way, the hydrogen production reactor 31 is used to produce hydrogen by utilizing the heat of the exhaust gas, thereby avoiding the need for additional heating equipment to produce hydrogen. This not only helps to streamline the structure of the hydrogen fuel power system 100, but also can recycle the energy in the exhaust gas, thereby helping to improve the energy utilization rate of the hydrogen fuel power system 100.

[0054] It should be noted that the hydrogen-containing medium of the hydrogen storage device 2 may be a metal hydride, an organic liquid, or methanol, etc., and the present invention does not limit this.

[0055] Furthermore, the hydrogen fuel internal combustion engine 1 is also formed with an expansion chamber, and the hydrogen production device 3 also includes a pressurizing device 32, and the pressurizing device 32 includes a liquid reservoir 321, a first driving pump 322 and a booster reactor 323, the liquid reservoir 321 is used to store the liquid to be vaporized, the inlet of the first driving pump 322 is connected to the liquid reservoir 321, the inlet of the booster reactor 323 includes a first feed port and a second feed port, the first feed port is connected to the outlet of the first driving pump 322, and the second feed port is used to supply the tail gas flowing out of the hydrogen production device 3 The liquid flows into the booster reactor 323 so that it absorbs the heat of the exhaust gas and then vaporizes. The outlet of the booster reactor 323 is connected to the expansion chamber to transport the high-pressure exhaust gas to the expansion chamber. In this way, the hydrogen storage medium and the hydrogen-containing medium are driven by the first driving pump 322 to be injected into the booster reactor 323 so that it absorbs the heat in the exhaust gas and then vaporizes. The vaporized gas enters the exhaust gas to increase the pressure of the exhaust gas. Finally, the high-pressure exhaust gas is injected into the expansion chamber to expand and do work, thereby further improving the energy utilization rate of the hydrogen fuel power system 100.

[0056] Furthermore, the liquid storage tank 321 includes an ammonia water storage tank, which is used to store ammonia water. With such a configuration, since ammonia water has a low boiling point, it can be vaporized to generate ammonia gas by absorbing a small amount of heat, which helps to quickly increase the pressure of the exhaust gas and also helps to subsequently remove hydroxides in the exhaust gas.

[0057] It should be noted that the liquid to be vaporized can be water or ammonia water, etc., and the present invention is not limited to this. Compared with ammonia water, water has a larger specific heat and needs to absorb a large amount of heat during vaporization. When the liquid to be vaporized is water, the heat in the exhaust gas can be quickly recovered.

[0058] Furthermore, the hydrogen fuel power system 100 also includes an exhaust gas treatment device 5, which also includes a denitrification device 51 and an exhaust gas collector 52. The two ends of the denitrification device 51 are respectively connected to the supercharging reactor 323 and the expansion chamber to remove nitrogen oxides in the high-pressure exhaust gas. The inlet of the exhaust gas collector 52 is connected to the expansion chamber, and the outlet of the exhaust gas collector 52 includes an ammonia outlet and an exhaust port. The ammonia outlet is connected to the ammonia water storage tank, and the exhaust port is connected to the external atmosphere. In this way, by arranging the denitrification device 51, when the exhaust gas flows through the denitrification device 51, the ammonia in the exhaust gas reacts with the hydroxide in the exhaust gas under the action of the catalyst, and the hydroxide is reduced to nitrogen to reduce the content of the hydroxide in the exhaust gas to avoid polluting the environment. At the same time, the ammonia in the exhaust gas is collected and separated through the exhaust collector 52, and the collected ammonia is injected into the liquid storage tank, so that the ammonia is recycled, and the remaining exhaust gas is directly discharged to the external atmosphere.

[0059] In order to improve the energy utilization rate of the hydrogen fuel power system 100, in the present embodiment, the hydrogen production device 3 further includes a connecting branch pipe, a shut-off valve 34 and a heat storage device 33. The connecting branch pipe connects the hydrogen production reactor 31 and the boosting reactor 323. The shut-off valve 34 is arranged on the connecting branch pipe. The heat storage device 33 is arranged on the connecting branch pipe to absorb the heat of the exhaust gas flowing out of the hydrogen production reactor 31. In this way, the heat storage device 33 is arranged to absorb heat from the exhaust gas flowing out of the boosting reactor 323 so as to further recover the heat in the exhaust gas. At the same time, the shut-off valve 34 is used to control whether the heat storage device 33 is enabled.

[0060] It is understandable that when the temperature is low, the heat in the heat storage device 33 can be directly utilized. Without starting the hydrogen fuel internal combustion engine 1, the stored heat can be used to preheat the hydrogen fuel internal combustion engine 1, defrost and defog the vehicle, etc., thereby avoiding the loss of energy of the hydrogen fuel internal combustion engine 1.

[0061] In order to cool the hydrogen fuel internal combustion engine 1 and the hydrogen production reactor 31, in this embodiment, the hydrogen fuel power system 100 also includes a cooling device 6, on which a cooling circulation loop is formed, and a coolant tank 61 and a coolant circulation pump 62 are provided on the cooling circulation loop. The hydrogen fuel internal combustion engine 1 and the hydrogen production reactor 31 are both arranged on the cooling circulation loop, and the hydrogen fuel internal combustion engine 1 is located on the side of the coolant circulation pump 62 facing away from the coolant tank 61, and the hydrogen production reactor 31 is located between the hydrogen fuel internal combustion engine 1 and the coolant tank 61. In this way, the coolant in the coolant tank 61 is injected into the hydrogen fuel internal combustion engine 1 through the cooling circulation pump to exchange heat with the hydrogen fuel internal combustion engine 1, so that the heat generated by the hydrogen fuel internal combustion engine 1, the high-temperature coolant after heat exchange is injected into the hydrogen production reactor 31, to exchange heat with the hydrogen production reactor 31, so as to dissipate heat to the hydrogen production reactor 31, and the coolant after heat dissipation flows back to the coolant tank 61.

[0062] Furthermore, the hydrogen production device 3 also includes a booster reactor 323, which is used to increase the pressure of the exhaust gas. The booster reactor 323 is arranged on the cooling circulation loop and is located between the hydrogen production reactor 31 and the coolant tank 61. It is arranged so that the coolant flowing out of the hydrogen production reactor 31 flows through the booster reactor 323 to exchange heat with the booster reactor 323 so as to dissipate heat to the booster reactor 323. The coolant after heat dissipation flows back to the coolant tank 61, so that the heat of the coolant can be dissipated in time after the secondary heat dissipation of the coolant, so as to avoid affecting the heat dissipation of the hydrogen fuel internal combustion engine 1.

[0063] In order to ensure that hydrogen can flow stably into the hydrogen fuel internal combustion engine 1, in the present embodiment, the hydrogen production device 3 further includes a pressure regulator 7, and the two ends of the pressure regulator 7 are respectively connected to the hydrogen circulation pump 4 and the combustion chamber. With such an arrangement, the pressure regulator 7 can be used to ensure that the hydrogen flowing into the hydrogen fuel internal combustion engine 1 remains stable, thereby helping to improve the working stability of the hydrogen fuel internal combustion engine 1.

[0064] In order to transport the hydrogen-containing medium of the hydrogen storage device 2 to the hydrogen production reactor 31, in the present embodiment, the hydrogen production device 3 also includes a second driving pump 35 arranged between the hydrogen production reactor 31 and the hydrogen storage device 2, and the two ends of the second driving pump 35 are respectively connected to the hydrogen production reactor 31 and the hydrogen storage device 2.

[0065] See also Figures 2 to 4The hydrogen fuel internal combustion engine 1 includes a housing, a first static vortex structure 111, a first static vortex structure 111, a first movable vortex structure 113, a second movable vortex structure 114, an intake pipe 15 and an ignition device 16. The first static vortex structure 111 includes a first static vortex ring arranged in the housing, the second static vortex structure 112 is arranged in the housing, the second static vortex structure 112 is formed with two second static vortex rings extending in opposite directions, the first movable vortex 113 structure is rotatably installed in the housing, and the first movable vortex 113 structure is formed with two first movable vortex rings extending in opposite directions. The first movable vortex circle, the first static vortex circle and one of the second static vortex circles respectively define two first chambers 12, the second movable vortex plate 114 structure is rotatably installed in the shell, and a second movable vortex circle is formed on the second movable vortex plate 114 structure. The second movable vortex circle and the other second static vortex circle together define a second chamber 13, and the second chamber 13 is set as an expansion chamber or a combustion chamber. Correspondingly, the two first chambers 12 are divided into a combustion chamber and a compression chamber, or an expansion chamber and a compression chamber. The compression chamber is connected to the combustion chamber through a connecting pipe 14, and an inlet is provided in the middle of the expansion chamber. The air inlet 1111, the air intake pipe 15 is connected to the combustion chamber to transport hydrogen to the combustion chamber, and the ignition device 16 is arranged in the combustion chamber, wherein the tail gas after combustion in the combustion chamber flows into the hydrogen storage device 2 to heat the hydrogen production reactor 31, and the tail gas after heat dissipation is processed and then flows back to the expansion chamber to expand and do work. In this way, the first movable scroll 113 is driven by the motor to perform orbital and translational motion, so that the air flowing into the compression chamber flows from the circumference of the movable scroll to the center of the movable scroll, and the air is gradually compressed during the flow process, so that the pressure of the air increases, and after compression The air enters the combustion chamber through the connecting pipe 14 and is fully mixed with the hydrogen entering the combustion chamber through the intake pipe 15. The mixed gas is ignited by the ignition device 16 in the combustion chamber, causing the mixed gas to expand and do work, thereby enabling the hydrogen fuel internal combustion engine 1 to do work externally. At the same time, through the air intake 1111, the high-temperature and high-pressure exhaust gas after combustion enters the expansion chamber, so that the exhaust gas can do work in the expansion chamber, allowing the hydrogen fuel internal combustion engine 1 to further recover the energy of the exhaust gas, which can not only maximize energy utilization, but also help improve the efficiency of the hydrogen fuel internal combustion engine 1.

[0066] It should be noted that the energy recovered by the expansion chamber can be used to compress the air in the compression chamber, and can also be converted into electrical energy and stored by a generator for use in accelerating or decelerating the vehicle, thereby helping to ensure the stability of the operation of the hydrogen fuel internal combustion engine 1.

[0067] The combustion chamber can be arranged in the first chamber 12 or in the second chamber 13, and the present invention does not limit this. Specifically, in this embodiment, the first chamber 12 is an expansion chamber and a compression chamber, and the second chamber 13 is a combustion chamber. The hydrogen fuel internal combustion engine 1 also includes a main output shaft 1141 and a secondary output shaft 1131. The main output shaft 1141 is driven and connected to the second movable scroll 114 structure, and the secondary output shaft 1131 is driven and connected to the first movable scroll 113 structure. In this arrangement, the compressor and the expansion chamber are formed at the same time in the first movable scroll 113 structure, and the combustion chamber is formed separately in the second movable scroll 114 structure, which can enable the compression chamber to utilize the work done by the expansion chamber for compression, and enable the combustion chamber to separately drive the main output shaft 1141 to do work externally, which helps to improve the working capacity of the main output shaft 1141.

[0068] In order to prevent the hydrogen fuel internal combustion engine 1 from having problems with pre-ignition or backfire, in the present embodiment, the combustion chamber is formed with a central expansion zone and a secondary expansion zone adjacent to the central expansion zone from the inside to the outside, and the ignition device 16 is arranged on the second stationary scroll and is arranged corresponding to the secondary expansion zone. During the rotation of the movable scroll, the central expansion zone and the secondary expansion zone are isolated from each other, so that the gas in the central expansion zone is separated from the gas in the secondary expansion zone, so that when the mixed gas in the secondary expansion zone burns, it will not be transmitted to the central expansion zone, let alone enter the intake pipe 15, thereby effectively avoiding the hydrogen fuel internal combustion engine 1 from having problems with pre-ignition or backfire.

[0069] In order to prevent the mixed gas in the combustion chamber from flowing back into the compression chamber, in the present embodiment, the connecting pipe 14 is provided with a one-way valve 141. By so configuring, the one-way valve 141 is used to ensure that the gas flows from the compression chamber to the combustion chamber in one direction, thereby preventing the gas from flowing back.

[0070] There are many ways to connect the air intake pipe 15 with the combustion chamber. The air intake pipe 15 can be directly connected with the combustion chamber, or indirectly connected with the combustion chamber. Specifically, in this embodiment, the outlet of the air intake pipe 15 is connected with the connecting pipe 14. The air intake pipe 15 is connected with the combustion chamber through the connecting pipe 14 so as to reduce the air intake port 1111 of the combustion chamber, which helps to improve the airtightness of the combustion chamber and reduce the manufacturing cost of the hydrogen fuel internal combustion engine 1.

[0071] Furthermore, the connecting pipe 14 has a flow direction from the compression chamber toward the combustion chamber, and the connecting pipe 14 is provided with a one-way valve 141. The one-way valve 141 and the outlet of the intake pipe 15 are arranged in sequence along the flow direction, so that the air inlet 1111 of the intake pipe 15 is located downstream of the one-way valve 141, thereby preventing hydrogen from entering the compression chamber.

[0072] Since the hydrogen fuel internal combustion engine 1 generates a lot of heat when it is working, if the heat cannot be discharged in time, the vortex structure is easily deformed by heat, resulting in gas leakage, which seriously affects the working performance of the hydrogen fuel internal combustion engine 1. For this reason, please refer to Figure 3 and Figure 4 The hydrogen fuel internal combustion engine 1 includes a cooling scroll structure 17, the cooling scroll structure 17 includes a cooling end plate 171 and a cooling vortex 172 correspondingly arranged on the cooling end plate 171, the cooling scroll structure 17 includes at least one of the first fixed scroll structure 111, the second fixed scroll structure 112, the first movable scroll 113 structure and the second movable scroll 114 structure, and correspondingly, the cooling vortex 172 includes at least one of the first fixed vortex circle, the second fixed vortex circle, the first movable vortex circle and the second movable vortex circle, and the cooling end plate 171 is provided with There is a cooling cavity 1711, and a cooling liquid inlet 1712 connected to the cooling cavity 1711 is provided in the middle of the cooling end plate 171, and a cooling liquid outlet 1713 connected to the cooling cavity 1711 is provided on the peripheral side of the cooling end plate 171. In this way, cooling liquid is injected into the cooling cavity 1711 through the cooling liquid inlet 1712 to absorb the heat of the cooling scroll structure 17. The cooling liquid after absorbing the heat flows out from the cooling liquid outlet 1713 to take the heat out of the cooling scroll structure 17, thereby avoiding heat accumulation in the cooling scroll structure 17.

[0073] Furthermore, a plurality of coolant outlets 1713 are provided, and the plurality of coolant outlets 1713 are arranged at circumferential intervals along the cooling end plate 171. In this way, by providing a plurality of coolant outlets 1713, the coolant can flow out of the cooling cavity 1711 in a timely manner, and can also flow out of the cooling end plate 171 evenly, thereby avoiding excessive local temperature in the cooling end plate 171.

[0074] In order to improve the cooling effect of the cooling scroll structure 17, in the present embodiment, the cooling scroll 172 is provided with a cooling groove 1721 which is connected to the cooling cavity 1711, and the cooling groove 1721 extends along the extension direction of the cooling scroll 172. In this way, the cooling liquid can flow into the cooling scroll 172 through the cooling groove 1721 for heat exchange, so as to take away the heat of the cooling scroll 172 in time and reduce the temperature of the cooling scroll 172, thereby helping to improve the cooling effect of the cooling scroll structure 17.

[0075] Since the movable scroll structure itself revolves and moves in an orbital and linear motion, the coolant can flow in the movable scroll structure, while the fixed scroll structure is in a stationary state and the coolant cannot flow, resulting in a poor heat dissipation effect of the fixed scroll structure. In view of this, in the present embodiment, an impeller 173 is rotatably installed in the cooling chamber 1711, and the rotation center of the impeller 173 is installed in the middle of the cooling chamber 1711. In this way, the impeller 173 is used to disturb the coolant flowing into the cooling chamber 1711, so that the coolant can fully exchange heat, thereby helping to improve the heat dissipation effect of the cooling scroll structure 17.

[0076] In addition, the present invention also provides a hydrogen fuel vehicle, which includes the hydrogen fuel power system 100 in the above-mentioned scheme. It should be noted that the hydrogen fuel power system 100 in the hydrogen fuel vehicle can refer to the above-mentioned embodiment of the hydrogen fuel power system 100, which will not be repeated here; since the above-mentioned hydrogen fuel power system 100 is used in the hydrogen fuel vehicle provided by the present invention, the embodiment of the hydrogen fuel vehicle provided by the present invention includes all technical solutions of all embodiments of the above-mentioned hydrogen fuel power system 100, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0077] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hydrogen fuel power system, characterized in that: include: A hydrogen fuel internal combustion engine is formed with a compression chamber and a combustion chamber connected to the compression chamber; A hydrogen storage device is formed with a hydrogen storage medium cavity and a medium cavity, wherein the hydrogen storage medium cavity is used to store a hydrogen-containing medium, and the medium cavity is used to store a hydrogen-free medium; A hydrogen production device, comprising a hydrogen production reactor, wherein the inlet of the hydrogen production reactor is connected to the hydrogen storage medium cavity, the hydrogen production reactor reduces the hydrogen-containing medium into hydrogen after being heated by the tail gas discharged from the combustion chamber, and the outlet of the hydrogen production reactor comprises a first outlet and a second outlet, the first outlet is connected to the medium cavity, and is used to transport the hydrogen-free medium after the reaction to the medium cavity; as well as, a hydrogen circulation pump, the inlet of which is connected to the second outlet, and the outlet of which is connected to the combustion chamber, for pressurizing the hydrogen in the hydrogen production reactor and then transporting it to the combustion chamber; The hydrogen fuel internal combustion engine comprises: case; A first stationary scroll structure, comprising a first stationary scroll ring provided on the housing; A second stationary scroll structure, disposed on the housing, wherein the second stationary scroll structure is formed with two second stationary vortex circles extending in opposite directions; a first movable scroll structure, rotatably mounted in the housing, wherein the first movable scroll structure is formed with two first movable vortex circles extending in opposite directions, wherein the two first movable vortex circles respectively define two first chambers together with the first stationary vortex circle and one of the second stationary vortex circles; a second movable scroll structure, rotatably mounted in the housing, a second movable scroll ring formed on the second movable scroll structure, the second movable scroll ring and another second static scroll ring jointly define a second chamber, the second chamber is set as a combustion chamber, and correspondingly, the two first chambers are divided into an expansion chamber and a compression chamber, the compression chamber is connected to the combustion chamber through a connecting pipe, and an air inlet is provided in the middle of the expansion chamber; an air intake pipe connected to the combustion chamber and used for delivering hydrogen to the combustion chamber; and an ignition device, disposed in the combustion chamber; The tail gas after combustion in the combustion chamber flows into the hydrogen storage device to heat the hydrogen production reactor, and the tail gas after heat dissipation is processed and then flows back to the expansion chamber to expand and do work; The hydrogen fuel internal combustion engine also includes: a main output shaft drivingly connected to the second movable scroll structure; and The secondary output shaft is drivingly connected to the first movable scroll structure.

2. The hydrogen fuel power system according to claim 1, characterized in that: The hydrogen production device further includes a pressurizing device, which includes: A liquid reservoir for storing liquid to be vaporized; a first drive pump, the inlet of which is connected to the liquid reservoir; and A booster reactor, the inlet of the booster reactor includes a first feed port and a second feed port, the first feed port is connected to the outlet of the first drive pump, the second feed port is used to allow the exhaust gas flowing out of the hydrogen production device to flow into the booster reactor, so that the liquid absorbs the heat of the exhaust gas and then vaporizes, and the outlet of the booster reactor is connected to the expansion chamber to transport high-pressure exhaust gas to the expansion chamber.

3. The hydrogen fuel power system according to claim 2, characterized in that: The liquid reservoir comprises an ammonia water reservoir, and the ammonia water reservoir is used to store ammonia water.

4. The hydrogen fuel power system according to claim 3, characterized in that: The hydrogen fuel power system further includes an exhaust gas treatment device, and the exhaust gas treatment device further includes: a denitrification device, the two ends of which are respectively connected to the booster reactor and the expansion chamber, for removing nitrogen oxides in the high-pressure tail gas; and The inlet of the tail gas collector is connected to the expansion chamber, and the outlet of the tail gas collector includes an ammonia outlet and an exhaust port. The ammonia outlet is connected to the ammonia water storage, and the exhaust port is connected to the external atmosphere.

5. The hydrogen fuel power system according to claim 2, characterized in that: The hydrogen production device also includes: A connecting branch pipe connecting the hydrogen production reactor and the pressure boosting reactor; a cut-off valve, disposed on the connecting branch pipe; and The heat storage device is arranged on the connecting branch pipe and is used for absorbing the heat of the tail gas flowing out from the hydrogen production reactor.

6. The hydrogen fuel power system according to claim 1, characterized in that: The hydrogen fuel power system further comprises a cooling device, wherein a cooling circulation loop is formed on the cooling device, and a coolant tank and a coolant circulation pump are provided on the cooling circulation loop; The hydrogen fuel internal combustion engine and the hydrogen production reactor are both arranged on the cooling circulation loop, the hydrogen fuel internal combustion engine is located on the side of the coolant circulation pump facing away from the coolant tank, and the hydrogen production reactor is located between the hydrogen fuel internal combustion engine and the coolant tank.

7. The hydrogen fuel power system according to claim 6, characterized in that: The hydrogen production device further comprises a pressure-boosting reactor, and the pressure-boosting reactor is used to increase the pressure of the tail gas; The booster reactor is arranged on the cooling circulation loop and is located between the hydrogen production reactor and the coolant tank.

8. The hydrogen fuel power system according to claim 1, characterized in that: The hydrogen fuel power system further comprises a pressure regulator, and two ends of the pressure regulator are respectively connected to the hydrogen circulation pump and the combustion chamber.

9. A hydrogen fuel vehicle, characterized in that: Comprising a hydrogen fuel power system as described in any one of claims 1 to 8.

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