Nitrogen separation and recovery system for a vehicle and vehicle

Abstract

The utility model relates to vehicle technical field discloses a kind of nitrogen separation and recovery system and carrier for carrier, comprising: oxygen production device, for separating oxygen and nitrogen in air, oxygen production device is equipped with nitrogen discharge port;Gas storage device, with nitrogen discharge port intercommunication, gas storage device is used to store nitrogen generated by oxygen production device;Air suspension system and tire pressure system, respectively with gas storage device intercommunication.Oxygen production device separates oxygen and nitrogen in air, separated nitrogen is stored in gas storage device, can air suspension system and tire pressure system are supplied with gas, to realize the separation and recycling of nitrogen, avoid direct emission to atmosphere, and the drawbacks such as low efficiency, energy consumption increase caused by re-entering oxygen production device.Moreover, air suspension system and tire pressure system use nitrogen as gas source, can reduce the oxidation aging of rubber parts, metal parts etc., prolong the service life of spare parts, keep tire pressure more stable, to further improve the user's use experience.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a nitrogen separation and recovery system for vehicles and a vehicle. Background Technology

[0002] An onboard oxygen generator system is an oxygen-generating device integrated into a vehicle. Its core function is to extract high-purity oxygen from the air using physical separation technology to provide a continuous oxygen supply. During the oxygen production process, the system also generates a large amount of nitrogen.

[0003] However, currently, vehicle-mounted oxygen generators typically release nitrogen as exhaust gas directly into the atmosphere. Furthermore, if the exhaust outlet and air inlet are poorly designed, large amounts of nitrogen can easily re-enter the oxygen generator, reducing oxygen production efficiency, increasing energy consumption, and negatively impacting the user experience. Utility Model Content

[0004] This utility model provides a nitrogen separation and recovery system and vehicle for vehicles, in order to solve or improve the problems in related technologies where the nitrogen generated by the vehicle oxygen generation system is directly discharged into the outside atmosphere as waste, and the unreasonable layout of the exhaust outlet and air inlet easily leads to reduced oxygen generation efficiency, increased energy consumption, and affects the user experience.

[0005] In a first aspect, this utility model provides a nitrogen separation and recovery system for a vehicle, comprising:

[0006] An oxygen generator is used to separate oxygen and nitrogen from air, and the oxygen generator is provided with a nitrogen outlet.

[0007] A gas storage device is connected to the nitrogen outlet, and the gas storage device is used to store the nitrogen generated by the oxygen generating device.

[0008] The air suspension system and the tire pressure system are respectively connected to the air storage device.

[0009] In one alternative implementation, it further includes:

[0010] The controller is electrically connected to the oxygen generator, the air suspension system, and the tire pressure system, respectively. The controller is used to control the opening and closing of the oxygen generator and the inflation and deflation of the air suspension system and the tire pressure system.

[0011] In one alternative embodiment, an air compressor is also included, the air compressor comprising:

[0012] The cylinder block has an internal cavity;

[0013] A piston assembly is movably disposed within the cavity, dividing the cavity into a first air chamber and a second air chamber that are independent of each other;

[0014] The first air inlet and the first air outlet are respectively located on the side of the cylinder body near the first air chamber and are respectively connected to the first air chamber. The first air inlet is used to connect to external air. The oxygen generating device is also provided with an air inlet, and the first air outlet is connected to the air inlet.

[0015] The second air inlet and the second air outlet are respectively located on the side of the cylinder body near the second air chamber and are respectively connected to the second air chamber. The second air inlet is connected to the nitrogen outlet and the second air outlet is connected to the gas storage device.

[0016] In one alternative embodiment, the air compressor further includes:

[0017] A motor is connected to the piston assembly for driving the piston assembly to reciprocate within the cavity; the motor is also electrically connected to the controller, which controls the operating state of the motor to control the reciprocating movement of the piston assembly.

[0018] In one alternative implementation, it further includes:

[0019] The driver's cab is equipped with an oxygen generator, which is connected to the driver's cab.

[0020] In one alternative implementation, the air suspension system includes:

[0021] The first gas passage is connected to the gas storage device;

[0022] At least one air spring, wherein the first air passage is connected to at least one of the air springs.

[0023] In one alternative implementation, it further includes:

[0024] The first control valve is connected to the gas storage device through the first gas passage. The first control valve is electrically connected to the controller, which is also used to control the opening and closing of the first control valve.

[0025] In one alternative implementation, the tire pressure system includes:

[0026] The second gas passage is connected to the gas storage device;

[0027] At least one tire, and the second air passage is in communication with at least one of the tires.

[0028] In one alternative implementation, it further includes:

[0029] The second control valve is connected to the gas storage device through the second gas path. The second control valve is electrically connected to the controller, which is also used to control the opening and closing of the second control valve.

[0030] Secondly, this utility model also provides a vehicle, including a nitrogen separation and recovery system for vehicles as described in any of the above claims.

[0031] Beneficial Effects: In the nitrogen separation and recovery system for vehicles provided by this utility model, the oxygen generator can separate oxygen and nitrogen from the air. The separated nitrogen can be stored in a gas storage device and supplied to the air suspension system and tire pressure system, thereby achieving the separation and recovery of nitrogen and avoiding the disadvantages of direct emission into the atmosphere and the low efficiency and increased energy consumption caused by re-entering the oxygen generator. Moreover, using nitrogen as a gas source in the air suspension system and tire pressure system can reduce the oxidation and aging of rubber parts and metal parts, extend the service life of components, maintain more stable tire pressure, and thus improve the user experience. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the nitrogen separation and recovery system for vehicles according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of an air compressor according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Oxygen generator; 101. Nitrogen outlet; 102. Air inlet; 103. Oxygen outlet; 2. Gas storage device; 3. Air suspension system; 301. First air passage; 302. Air spring; 303. First control valve; 4. Tire pressure system; 401. Second air passage; 402. Tire; 403. Second control valve; 5. Controller; 6. Air compressor; 601. Cylinder; 602. Cavity; 6021. First air chamber; 6022. Second air chamber; 603. Piston assembly; 6031. Piston; 6032. Piston rod; 604. First air inlet; 605. First air outlet; 606. Second air inlet; 607. Second air outlet; 608. Motor; 609. Third control valve; 610. Fourth control valve; 611. Fifth control valve; 612. Sixth control valve; 7. Cab; 8. Switch valve. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The following is combined with Figures 1 to 2 This invention describes a nitrogen separation and recovery system for a vehicle and a vehicle according to embodiments of the present invention.

[0042] According to an embodiment of this utility model, in one aspect, a nitrogen separation and recovery system for vehicles is provided, suitable for automobiles. This vehicle nitrogen separation and recovery system includes an oxygen generation device 1, an air storage device 2, an air suspension system 3, and a tire pressure system 4. Specifically, as... Figure 1 As shown, the oxygen generator 1 is used to separate oxygen and nitrogen from the air, and the oxygen generator 1 is provided with a nitrogen outlet 101. Optionally, the oxygen generator 1 is a vehicle-mounted oxygen generator, which can accurately and efficiently separate oxygen and nitrogen from the air through physical separation technology (such as pressure swing adsorption or membrane separation), and the separated nitrogen is discharged from the nitrogen outlet 101.

[0043] like Figure 1 As shown, the gas storage device 2 is connected to the nitrogen outlet 101. The gas storage device 2 is used to store the nitrogen generated by the oxygen generator 1. The air suspension system 3 and the tire pressure system 4 are respectively connected to the gas storage device 2. Optionally, the gas storage device 2 is a gas storage tank. The inlet of the gas storage tank is connected to the nitrogen outlet 101, and the outlet of the gas storage tank is connected to the air suspension system 3 and the tire pressure system 4 respectively. In this way, the separated nitrogen can be stored in the gas storage tank first, and the air suspension system 3 and the tire pressure system 4 share a common air intake source, thereby integrating gas storage and multi-source air supply functions, reducing the number of components and the space occupied.

[0044] With this configuration, the oxygen generator 1 can separate oxygen and nitrogen from the air. The separated nitrogen can be stored in the gas storage device 2, which can then supply air to the air suspension system 3 and the tire pressure system 4. This achieves the separation and recycling of nitrogen, avoiding the resource waste caused by direct emission into the atmosphere, as well as the inefficiency and increased energy consumption resulting from re-entering the oxygen generator 1, thus improving nitrogen utilization. Furthermore, since the air suspension system 3 and the tire pressure system 4 use nitrogen as their gas source, nitrogen's stable chemical properties can reduce the oxidation and aging of rubber and metal parts, extending their service life. In addition, nitrogen is less affected by temperature and humidity than air, making it suitable for the precise control requirements of the air suspension system 3 and the tire pressure system 4, maintaining more stable tire pressure, and thus improving the user experience.

[0045] Optionally, in some embodiments of this utility model, such as Figure 1 As shown, the vehicle-mounted nitrogen separation and recovery system also includes a controller 5. The controller 5 is electrically connected to the oxygen generator 1, the air suspension system 3, and the tire pressure system 4, respectively. The controller 5 is used to control the opening and closing of the oxygen generator 1, and the inflation and deflation of the air suspension system 3 and the tire pressure system 4. Specifically, the controller 5 can be an independently set control module or integrated into the vehicle's electronic control unit (ECU). The controller 5 can automatically start or stop the oxygen generator 1 as needed, thus saving energy and avoiding unnecessary operation. Simultaneously, the controller 5 can also monitor the status of each system in real time, such as air suspension height and tire pressure, and make dynamic adjustments accordingly.

[0046] This configuration makes the entire system more automated and intelligent, responding to changes in gas demand and achieving automatic adjustment, resulting in energy savings and high efficiency. It should be noted that controller 5 is a mature device in related technologies, therefore its specific structure and electrical connections will not be elaborated upon here. However, it is understandable that achieving automatic control of the device through controller 5 is common knowledge in related technologies.

[0047] Optionally, in some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the nitrogen separation and recovery system for the vehicle also includes an air compressor 6. The air compressor 6 includes a cylinder 601, a piston assembly 603, a first air inlet 604, a first air outlet 605, a second air inlet 606, and a second air outlet 607. Specifically, the cylinder 601 has a cavity 602 inside, and the piston assembly 603 is movably disposed within the cavity 602, dividing the cavity 602 into two independent chambers 6021 and 6022. Optionally, the piston assembly 603 includes a piston 6031 and a piston rod 6032 connected to the piston 6031. The piston 6031 is tightly fitted to the inner wall of the cylinder 601, and each side of the piston 6031 has two independent chambers. The piston rod 6032 extends outside the cylinder 601, and the piston rod 6032 can drive the piston 6031 to reciprocate within the cylinder 601 to perform work on the gas in the two chambers.

[0048] Reference Figure 1 and Figure 2 The first air inlet 604 and the first air outlet 605 are respectively located on the side of the cylinder body 601 near the first air chamber 6021, and are connected to the first air chamber 6021. Optionally, the first air inlet 604 is connected to a third control valve 609, which is electrically connected to a controller 5. The controller 5 controls the opening and closing of the third control valve 609 to achieve automatic opening and closing of the first air inlet 604. The first air outlet 605 is connected to a fourth control valve 610, which is electrically connected to the controller 5. The controller 5 controls the opening and closing of the fourth control valve 610 to achieve automatic opening and closing of the first air outlet 605. The first air inlet 604 is used to connect to fresh external air. The oxygen generator 1 also has an air inlet 102, and the first air outlet 605 is connected to the air inlet 102 through a pipeline. Fresh air is introduced into the first air chamber 6021, compressed within the first air chamber 6021, and then sent to the oxygen generating device 1.

[0049] Reference Figure 1 and Figure 2The second air inlet 606 and the second air outlet 607 are respectively located on the side of the cylinder block 601 near the second air chamber 6022, and are connected to the second air chamber 6022. Optionally, the second air inlet 606 is connected to a fifth control valve 611, which is electrically connected to a controller 5. The controller 5 controls the opening and closing of the fifth control valve 611 to achieve automatic opening and closing of the second air inlet 606. The second air outlet 607 is connected to a sixth control valve 612, which is electrically connected to the controller 5. The controller 5 controls the opening and closing of the sixth control valve 612 to achieve automatic opening and closing of the second air outlet 607. The second air inlet 606 is connected to the nitrogen outlet 101 via a pipeline, and the second air outlet 607 is connected to the gas storage device 2 via a pipeline. The nitrogen waste gas generated by the oxygen generator 1 enters the second chamber 6022, is compressed in the second chamber 6022, and is temporarily stored in the gas storage device 2, so that it can be supplied to the air suspension system 3 and the tire pressure system 4 when needed.

[0050] When in use, the air compressor 6 operates on the following principle:

[0051] It should be noted that after the air compressor 6 has finished its previous operation, the piston assembly 603 stops at the rightmost end of the cylinder 601 to vent the gas in the second air chamber 6022. In this way, when the air compressor starts working again, it can ensure that the gas in the second air chamber 6022 is nitrogen, thereby ensuring the purity of the nitrogen stored in the air storage device 2 and preventing air from entering the air storage device 2.

[0052] Therefore, the air compressor 6 starts working and works with the oxygen generator 1 to separate nitrogen and oxygen: the first air inlet 604 is closed, the first air outlet 605 is closed, the second air inlet 606 is opened, the second air outlet 607 is closed, and the piston assembly 603 moves to the left, compressing the air in the first air chamber 6021. When the air pressure in the first air chamber 6021 reaches the first preset pressure and meets the input pressure of the oxygen generator 1, the first air outlet 605 opens, providing fresh air to the oxygen generator 1. The oxygen generator 1 separates oxygen and nitrogen from the air, and the nitrogen exhaust gas generated by the oxygen generator 1 is sent into the second air chamber 6022. The piston assembly 603 moves to the left to its maximum stroke position, and the oxygen generator 1 completes one nitrogen-oxygen separation cycle. It should be noted that, under the condition of reaching the first preset pressure, fresh air can be output to the oxygen generating device 1 through the first air outlet 605. The magnitude of the first preset pressure depends on the input pressure of the oxygen generating device 1 to meet the pressure requirements of the oxygen generating device 1 during operation. For example, the first preset pressure can be 0.04MPa-0.07MPa.

[0053] Nitrogen is introduced into the storage device 2: The first inlet 604 opens, the first outlet 605 closes, the second inlet 606 closes, and the second outlet 607 closes. The piston assembly 603 moves to the right, compressing the nitrogen in the second chamber 6022. When the nitrogen pressure in the second chamber 6022 reaches the second preset pressure, high-pressure nitrogen is formed. The second outlet 607 opens, sending the high-pressure nitrogen into the storage device 2 for storage. The high-pressure nitrogen in the storage device 2 can supply air to the air suspension system 3 and the tire pressure system 4. Simultaneously, fresh air enters the first chamber 6021 from the first inlet 604, replenishing the air supply. This completes one working cycle. It should be noted that, under the condition of reaching the second preset pressure, high-pressure nitrogen can be output to the storage device 2 through the second outlet 607. The magnitude of the second preset pressure is adapted to the pressure requirements of the air suspension system 3 and the tire pressure system 4; for example, the second preset pressure can be 18 Bar.

[0054] When the air compressor 6 finishes working, the piston assembly 603 finally stops at the rightmost end of the cylinder 601 to vent the gas in the second air chamber 6022.

[0055] With this configuration, one side of the air compressor cylinder 601 contains air and the other side contains nitrogen. When the piston assembly 603 reciprocates, it can compress the gas on both sides once in a single cycle, which improves the working efficiency, reduces system energy consumption, and reduces the size of the air compressor. The overall structure is compact and suitable for installation on automobiles.

[0056] Optionally, in some embodiments of this utility model, such as Figure 2 As shown, the air compressor 6 also includes a motor 608, which is connected to the piston assembly 603 via a transmission connection. The motor 608 is used to drive the piston assembly 603 to reciprocate within the cavity 602. The motor 608 is also electrically connected to a controller 5, which is used to control the operating state of the motor 608 to control the reciprocating movement of the piston assembly 603.

[0057] It should be noted that the transmission mechanism between the motor 608 and the piston assembly 603 can employ a cam mechanism, a crankshaft connecting rod mechanism, etc. Taking the crankshaft connecting rod mechanism as an example, the piston assembly 603 includes a piston 6031 and a piston rod 6032 connected to the piston 6031. One end of the connecting rod is connected to the crankshaft eccentric wheel, and the other end is connected to the piston rod 6032. Thus, the motor 608 drives the crankshaft to rotate through the coupling. The eccentric wheel design of the crankshaft converts the rotational motion into the reciprocating linear motion of the piston 6031. Simultaneously, the controller 5 can control the operating state of the motor 608 according to the air demand, including but not limited to the start / stop, forward / reverse rotation, and rotation angle of the motor 608, thereby controlling the movement direction of the piston assembly 603 and achieving safe and efficient system operation. Furthermore, the controller 5 is also used to control the opening and closing of the first air inlet 604, the first air outlet 605, the second air inlet 606, and the second air outlet 607 to achieve bidirectional reciprocating compression of the air compressor.

[0058] Optionally, in some embodiments of this utility model, such as Figure 1 As shown, the vehicle-mounted nitrogen separation and recovery system also includes a driver's cab 7, and the oxygen generator 1 is equipped with an oxygen outlet 103, which is connected to the driver's cab 7 via a pipeline. With this configuration, the oxygen generated by the oxygen generator 1 can supply the driver's cab, providing a continuous oxygen supply for the occupants, improving the riding experience and enhancing passenger comfort. Thus, the system integrates oxygen generation, compression, storage, and multi-source gas supply functions, constructing a recycling system and functional zoning mechanism for onboard gas resources, achieving efficient and intensive utilization of nitrogen and oxygen resources. Furthermore, in some embodiments, a switch valve 8 can be installed between the oxygen outlet 103 and the driver's cab 7. The controller 5 controls the opening and closing of this switch valve 8 to automatically control the oxygen supply process to the driver's cab 5.

[0059] Optionally, in some embodiments of this utility model, such as Figure 1 As shown, the air suspension system 3 includes a first air passage 301 and at least one air spring 302. One end of the first air passage 301 is connected to the air storage device 2, and the other end of the first air passage 301 is connected to at least one air spring 302. It should be noted that the number of air springs 302 can be determined according to actual design requirements. With this configuration, the nitrogen stored in the air storage device 2 can be supplied to each air spring 302 through the first air passage 301 to adjust the air pressure state of the air suspension, improve ride comfort and driving stability, and the use of inert gas can extend the service life of the air suspension system 3.

[0060] Optionally, in some embodiments of this utility model, such as Figure 1As shown, the nitrogen separation and recovery system for the vehicle also includes a first control valve 303. Specifically, the first control valve 303 can be a solenoid valve, a pressure control valve, etc. The first air passage 301 is connected to the air storage device 2 through the first control valve 303. The first control valve 303 is electrically connected to the controller 5, which is also used to control the opening and closing of the first control valve 303. With this configuration, the controller 5 can achieve intelligent control of the air supply process of the air suspension system 3 by precisely controlling the opening and closing state of the first control valve 303, and can accurately meet the dynamic adjustment needs of the air suspension system 3 according to the actual working conditions. In addition, in some embodiments, a control switch can be installed on each branch pipe of the air spring 302 to enable inflation, deflation, or pressure adjustment control of a single air spring 302. This facilitates precise adjustment of parameters such as support force and height of different air springs 302 according to the actual working conditions, improving the flexibility and adaptability of the system and meeting diverse usage needs.

[0061] Optionally, in some embodiments of this utility model, such as Figure 1 As shown, the tire pressure system 4 includes a second air passage 401 and at least one tire 402. One end of the second air passage 401 is connected to the air storage device 2, and the other end is connected to at least one tire 402. With this configuration, nitrogen stored in the air storage device 2 can be delivered to each tire 402 via the second air passage 401, optimizing vehicle performance through precise tire pressure adjustment. Using inert nitrogen as the inflation medium not only stabilizes tire pressure but also effectively reduces oxidation wear on the components of the tire pressure system 4, thereby extending its service life.

[0062] Optionally, in some embodiments of this utility model, such as Figure 1 As shown, the vehicle-mounted nitrogen separation and recovery system also includes a second control valve 403. Specifically, the second control valve 403 can be a solenoid valve, a pressure control valve, etc. The second air passage 401 is connected to the air storage device 2 through the second control valve 403. The second control valve 403 is electrically connected to the controller 5, which is also used to control the opening and closing of the second control valve 403. With this configuration, the controller 5 can achieve intelligent management of the air supply process of the tire pressure system 4 by precisely regulating the opening and closing state of the second control valve 403. It can accurately match the air supply demand of the tire pressure system 4 according to the real-time operating conditions of the vehicle, ensuring the timeliness and accuracy of tire pressure regulation.

[0063] According to an embodiment of this utility model, another aspect provides a vehicle including the nitrogen separation and recovery system for vehicles as described in the above embodiments. Optionally, the vehicle is a new energy vehicle, a fuel vehicle, etc. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the nitrogen separation and recovery system for vehicles described above, and therefore will not be repeated here.

[0064] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A nitrogen separation and recovery system for a vehicle, characterized in that, include: An oxygen generating device (1) is used to separate oxygen and nitrogen from air, and the oxygen generating device (1) is provided with a nitrogen outlet (101); A gas storage device (2) is connected to the nitrogen outlet (101) and is used to store the nitrogen generated by the oxygen generating device (1). The air suspension system (3) and the tire pressure system (4) are respectively connected to the air storage device (2).

2. The nitrogen separation and recovery system for vehicles according to claim 1, characterized in that, Also includes: The controller (5) is electrically connected to the oxygen generator (1), the air suspension system (3) and the tire pressure system (4) respectively. The controller (5) is used to control the opening and closing of the oxygen generator (1) and the inflation and deflation of the air suspension system (3) and the tire pressure system (4).

3. The nitrogen separation and recovery system for vehicles according to claim 2, characterized in that, It also includes an air compressor (6), which comprises: The cylinder block (601) has an internal cavity (602); The piston assembly (603) is movably disposed within the cavity (602) and divides the cavity (602) into a first air chamber (6021) and a second air chamber (6022) that are independent of each other; The first air inlet (604) and the first air outlet (605) are respectively located on the side of the cylinder (601) near the first air chamber (6021) and are respectively connected to the first air chamber (6021). The first air inlet (604) is used to connect to the outside air. The oxygen generating device (1) is also provided with an air inlet (102). The first air outlet (605) is connected to the air inlet (102). The second air inlet (606) and the second air outlet (607) are respectively located on the side of the cylinder (601) near the second air chamber (6022) and are respectively connected to the second air chamber (6022). The second air inlet (606) is connected to the nitrogen outlet (101) and the second air outlet (607) is connected to the gas storage device (2).

4. The nitrogen separation and recovery system for vehicles according to claim 3, characterized in that, The air compressor (6) also includes: A motor (608) is connected to the piston assembly (603) for driving the piston assembly (603) to reciprocate within the cavity (602); the motor (608) is electrically connected to the controller (5), and the controller (5) is also used to control the operating state of the motor (608) to control the reciprocating movement of the piston assembly (603).

5. The nitrogen separation and recovery system for vehicles according to any one of claims 1 to 4, characterized in that, Also includes: The driver's cab (7) is provided with an oxygen outlet (103) of the oxygen generating device (1), which is connected to the driver's cab (7).

6. The nitrogen separation and recovery system for vehicles according to any one of claims 2 to 4, characterized in that, The air suspension system (3) includes: The first gas passage (301) is connected to the gas storage device (2); At least one air spring (302), wherein the first air passage (301) is connected to at least one of the air springs (302).

7. The nitrogen separation and recovery system for vehicles according to claim 6, characterized in that, Also includes: The first control valve (303) is connected to the gas storage device (2) through the first gas passage (301). The first control valve (303) is electrically connected to the controller (5). The controller (5) is also used to control the opening and closing of the first control valve (303).

8. The nitrogen separation and recovery system for vehicles according to any one of claims 2 to 4, characterized in that, The tire pressure system (4) includes: The second gas passage (401) is connected to the gas storage device (2); At least one tire (402), and the second air passage (401) is in communication with at least one of the tires (402).

9. The nitrogen separation and recovery system for vehicles according to claim 8, characterized in that, Also includes: The second control valve (403) is connected to the gas storage device (2) through the second gas passage (401). The second control valve (403) is electrically connected to the controller (5). The controller (5) is also used to control the opening and closing of the second control valve (403).

10. A vehicle, characterized in that, Includes a nitrogen separation and recovery system for vehicles as described in any one of claims 1 to 9.

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