Air supply apparatus, suspension air supply system, and vehicle

Abstract

A vehicle, comprising an air supply apparatus or a suspension air supply system. The suspension air supply system comprises the air supply apparatus. The air supply apparatus comprises a first air storage tank, a second air storage tank, a switch device, and an air suspension connecting end. One end of the switch device is connected to the first air storage tank and the second air storage tank, and another end of the switch device is connected to the air suspension connecting end. The switch device is used for controlling connection and disconnection of the first air storage tank and / or the second air storage tank with the air suspension connecting end.

Description

Air supply device, suspension air supply system and vehicle

[0001] Cross-reference of related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202421229717.9, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of vehicle suspension technology, and in particular relates to an air supply device, a suspension air supply system, and a vehicle. Background Technology

[0004] Air suspension systems typically use a single air tank to supply air to multiple air springs, thereby lifting each air spring.

[0005] However, since the air suspension system only has one air tank, in order to ensure effective air supply to multiple air springs, the air tank needs to have a large volume. Correspondingly, a large space needs to be reserved on the vehicle body for the installation of the air tank, resulting in low space utilization of the vehicle body.

[0006] Public content

[0007] One object of this application is to provide an air supply device, a suspension air supply system, and a vehicle.

[0008] This application provides a gas supply device, including a first gas storage tank, a second gas storage tank, a switching device, and an air spring connection terminal. One end of the switching device is connected to the first gas storage tank and the second gas storage tank, and the other end of the switching device is connected to the air spring connection terminal. The switching device is used to control the on / off connection between the first gas storage tank and / or the second gas storage tank and the air spring connection terminal.

[0009] In some embodiments, multiple air spring connection terminals are provided, and the multiple air spring connection terminals are connected to the other end of the switching device.

[0010] In some embodiments, the air supply device further includes an air compressor, the air compressor’s inlet being for receiving external air or high-pressure gas, and the air compressor’s outlet being connected to the first air storage tank and / or the second air storage tank.

[0011] In some embodiments, the air supply device further includes an electric motor electrically connected to the air compressor.

[0012] In some embodiments, the gas supply device further includes a gas dryer, the outlet of the air compressor is connected to the inlet of the gas dryer, and the outlet of the gas dryer is connected to the first gas storage tank and / or the second gas storage tank. The gas duct of the gas dryer connects the outlet of the air compressor to the third pipeline.

[0013] In some embodiments, the air supply device further includes a first pipeline, and the other end of the switching device and the air spring connection end are respectively connected to the first pipeline.

[0014] In some embodiments, the switching device includes a first valve and a second valve, wherein the first valve is connected between the first gas storage tank and the first pipeline, and when the first valve is opened, it enables the first gas storage tank to communicate with the first pipeline.

[0015] The second valve is connected between the second gas storage tank and the first pipeline. When the second valve is opened, it enables the second gas storage tank to connect with the first pipeline.

[0016] In some embodiments, the first valve and the second valve are integrated into one unit.

[0017] In some embodiments, the air supply device further includes a third pipeline connected between the air outlet of the air compressor and the first pipeline, and a second valve connected between the second air tank and the third pipeline, wherein opening the second valve enables communication between the second air tank and the third pipeline.

[0018] In some embodiments, a third valve is provided between the third pipeline and the first pipeline, and when the third valve is opened, the first pipeline can be connected to the third pipeline.

[0019] In some embodiments, the gas supply device further includes a fourth pipeline connected to the first pipeline, and a first valve connected between the first gas storage tank and the fourth pipeline. When the first valve is opened, it enables the first gas storage tank to be connected to the fourth pipeline.

[0020] In some embodiments, a fourth valve is provided between the fourth pipeline and the first pipeline, and when the fourth valve is opened, the first pipeline can be connected to the fourth pipeline.

[0021] In some embodiments, the air supply device further includes a first air inlet and / or a second air inlet, wherein the air inlet of the air compressor is connected to the first air inlet; and the second air inlet is connected to the air inlet of the air compressor and the first air storage tank.

[0022] The first air inlet is for receiving external air, and the second air inlet is for receiving external high-pressure gas.

[0023] In some embodiments, the first air inlet includes an air filter and a first one-way valve. The air inlet of the air filter is used to receive external air, the air inlet of the first one-way valve is connected to the air outlet of the air filter, and the air outlet of the first one-way valve is connected to the air inlet of the air compressor.

[0024] In some embodiments, the second air inlet includes a second one-way valve, the air inlet of the second one-way valve is used to connect to high-pressure gas, and the air outlet of the second one-way valve is connected to the air inlet of the air compressor and the first air storage tank.

[0025] In some embodiments, the air supply device further includes a second conduit connected between the outlet of the first one-way valve and the inlet of the air compressor.

[0026] In some embodiments, the gas supply device further includes a fifth pipeline, a gas outlet, and a sixth valve, wherein the fifth pipeline is connected between the fourth pipeline and the second pipeline;

[0027] A fifth valve is provided between the fifth pipeline and the fourth pipeline. When the fifth valve is opened, the fourth pipeline can be connected to the fifth pipeline.

[0028] The sixth valve is connected between the air outlet and the third pipeline. When the sixth valve is opened, it enables the air outlet to connect with the third pipeline.

[0029] The outlet is used to discharge the gas from the gas supply device.

[0030] In some embodiments, the air supply device further includes a seventh valve, which is connected between the air spring connection end and the first pipeline, and when the seventh valve is opened, it enables the air spring connection end to communicate with the first pipeline.

[0031] In some embodiments, the gas supply device further includes a pressure sensor for detecting the pressure within the first pipeline.

[0032] This application provides a suspension air supply system, including an air suspension and the aforementioned air supply device.

[0033] This application provides a vehicle that includes the above-described air supply device or the above-described suspension air supply system.

[0034] This application provides a vehicle including an air supply device or a suspension air supply system. The vehicle is equipped with two air tanks (a first air tank and a second air tank), and a switching device controls the connection between the first and / or second air tanks and the air spring connection point. This allows the air spring to be supplied with air either through one of the two air tanks or both air tanks simultaneously, enabling rapid air spring lifting. When the air spring needs to be deflated after lifting, the gas inside the air spring can enter one of the two air tanks, or both air tanks simultaneously, achieving gas recovery. Because this air supply device has two air tanks, the volume of a single air tank can be reduced, decreasing the space requirements for air tank placement on the vehicle and increasing the utilization rate of vehicle body space. Attached Figure Description

[0035] Figure 1 is a schematic diagram of the gas supply device provided in an embodiment of this application;

[0036] Figure 2 is a schematic diagram of the suspension air supply system provided in an embodiment of this application.

[0037] The reference numerals in the accompanying drawings are as follows: 100, air supply device; 1, first air tank; 2, second air tank; 200, switching device; 3, air spring connection end; 4, first pipeline; 5, first valve; 6, second valve; 7, electric motor; 8, air compressor; 9, second pipeline; 10, third pipeline; 101, first air inlet; 102, second air inlet; 11, air filter; 12, first one-way valve; 13, gas dryer; 14, fourth pipeline; 15, third valve; 16, fourth valve; 17, fifth pipeline; 18, fifth valve; 19, second one-way valve; 20, air outlet; 21, sixth valve; 22, pressure sensor; 23, seventh valve; 300, suspension air supply system; 301, air suspension. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] As shown in Figures 1 and 2, the gas supply device 100 provided in this embodiment includes a first gas storage tank 1, a second gas storage tank 2, an air spring connection terminal 3, and a switching device 200. One end of the switching device 200 is connected to the first gas storage tank 1 and the second gas storage tank 2, and the other end of the switching device 200 is connected to the air spring connection terminal 3. The switching device 200 is used to control the on / off connection between the first gas storage tank 1 and / or the second gas storage tank 2 and the air spring connection terminal 3.

[0040] When the first air tank 1 and / or the second air tank 2 are connected to the air spring connection end 3, the first air tank 1 and the second air tank 2 can supply air to the air spring connection end 3 and can also recover the gas in the air spring connection end 3.

[0041] The air supply device 100 provided in this embodiment of the application is equipped with two air tanks (the first air tank 1 and the second air tank 2), and the switching device 200 controls the on / off connection between the first air tank 1 and / or the second air tank 2 and the air spring connection end 3. This allows for air supply to the air spring at the air spring connection end 3 through one of the two air tanks when the gas capacity in a single air tank is sufficient, or for air springs to be supplied to the air spring simultaneously through both air tanks when the gas capacity in both air tanks is low, achieving rapid lifting of the air spring. When the air spring needs to be released after lifting, the gas in the air spring can enter one of the two air tanks, or simultaneously enter both air tanks, achieving gas recovery. Because the air supply device 100 has two air tanks, the volume of a single air tank can be reduced, thus reducing the space requirements for air tank placement in the vehicle and increasing the utilization rate of vehicle body space.

[0042] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a first pipeline 4, the other end of the switching device 200 and the air spring connection end 3 are respectively connected to the first pipeline 4, so that the first gas storage tank 1 and the second gas storage tank 2 can supply gas to the air spring connection end 3 through the first pipeline 4, and can also recover the gas in the air spring connection end 3 through the first pipeline 4.

[0043] In one embodiment, as shown in FIG1, the switching device 200 integrates a first valve 5 and a second valve 6. The first valve 5 is disposed between the first gas storage tank 1 and the first pipeline 4, and when the first valve 5 is open, it enables communication between the first gas storage tank 1 and the first pipeline 4. The second valve 6 is disposed between the second gas storage tank 2 and the first pipeline 4, and when the second valve 6 is open, it enables communication between the second gas storage tank 2 and the first pipeline 4. The air spring connection end 3 is connected to the first pipeline 4.

[0044] In other embodiments not shown in the figure, the first valve and the second valve may also be configured separately.

[0045] In one embodiment, as shown in FIG1, the air supply device 100 further includes a first air inlet 101, a motor 7, an air compressor 8, a second pipeline 9, and a third pipeline 10. The motor 7 is electrically connected to the air compressor 8. The second pipeline 9 connects the air inlet of the air compressor 8 to the first air inlet 101. The third pipeline 10 connects the air outlet of the air compressor 8 to the first pipeline 4. The second air storage tank 2 is connected to the third pipeline 10 via the second valve 6. The first air inlet 101 is used to receive external air.

[0046] The electric motor 7 drives the air compressor 8 to start, allowing air entering the air supply device 100 from the first air inlet 101 to be compressed by the air compressor 8. The compressed high-pressure gas can then enter the first pipe 4 through the third pipe 10, and can also enter the second air storage tank 2 and / or the air spring. Understandably, for the high-pressure gas to enter the second air storage tank 2, the second valve 6 needs to be opened.

[0047] In one embodiment, as shown in FIG1, the first air inlet 101 includes an air filter 11 and a first one-way valve 12. The air inlet of the air filter 11 is used to receive external air. The air inlet of the first one-way valve 12 is connected to the air outlet of the air filter 11. The air outlet of the first one-way valve 12 is connected to the second pipeline 9 to ensure that the air entering through the air filter 11 can be unidirectionally delivered to the air compressor 8 for compression.

[0048] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a gas dryer 13. The outlet of the air compressor 8 is connected to the inlet of the gas dryer 13. The outlet of the gas dryer 13 is connected to the first gas storage tank 1 and / or the second gas storage tank 2. The gas passage of the gas dryer 13 is connected between the outlet of the air compressor 8 and the third pipeline 10 to dry the high-pressure gas compressed by the air compressor 8 and remove moisture from the high-pressure gas.

[0049] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a fourth pipeline 14, which is connected to the first pipeline 4. The first valve 5 is disposed between the first gas storage tank 1 and the fourth pipeline 14. When the first valve 5 is opened, it enables the first gas storage tank 1 to be connected to the fourth pipeline 14, thereby enabling the first gas storage tank 1 to be connected to the first pipeline 4 through the connection between the fourth pipeline 14 and the first pipeline 4.

[0050] In one embodiment, as shown in FIG1, a third valve 15 is provided between the third pipeline 10 and the first pipeline 4 to control the connection state between the third pipeline 10 and the first pipeline 4. Understandably, when the third valve 15 is open, the third pipeline 10 is connected to the first pipeline 4; when the third valve 15 is closed, the third pipeline 10 is disconnected from the first pipeline 4.

[0051] A fourth valve 16 is provided between the fourth pipeline 14 and the first pipeline 4 to control the connection state between the fourth pipeline 14 and the first pipeline 4. Understandably, when the fourth valve 16 is open, the fourth pipeline 14 is connected to the first pipeline 4; when the fourth valve 16 is closed, the fourth pipeline 14 is disconnected from the first pipeline 4.

[0052] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a fifth pipeline 17, which is connected between the fourth pipeline 14 and the second pipeline 9, allowing the high-pressure gas in the fourth pipeline 14 to enter the second pipeline 9 and then enter the air compressor 8 for secondary compression.

[0053] In one embodiment, as shown in FIG1, a fifth valve 18 is provided between the fifth pipeline 17 and the fourth pipeline 14 to control the connection state between the fifth pipeline 17 and the fourth pipeline 14. Understandably, when the fifth valve 18 is open, the fifth pipeline 17 and the fourth pipeline 14 are connected; when the fifth valve 18 is closed, the fifth pipeline 17 and the fourth pipeline 14 are disconnected.

[0054] In one embodiment, as shown in FIG1, the air supply device 100 further includes a second air inlet 102, which is connected to the air inlet of the air compressor 8 and the first air storage tank 1, and can be connected to the fourth pipeline 14. The second air inlet 102 is used to connect to external high-pressure gas.

[0055] Furthermore, the second air inlet 102 includes a second one-way valve 19. The air inlet of the second one-way valve 19 is used to connect to high-pressure gas, and the air outlet of the second one-way valve 19 is connected to the fourth pipeline 14, so that high-pressure gas can enter the fourth pipeline 14 in one direction through the second one-way valve 19 for gas supply.

[0056] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a gas outlet 20 and a sixth valve 21. The sixth valve 21 is disposed between the gas outlet 20 and the third pipeline 10, and the sixth valve 21 can control the connection state between the gas outlet 20 and the third pipeline 10. Understandably, when the sixth valve 21 is open, the gas outlet 20 is connected to the third pipeline 10, so that gas in the third pipeline 10 can be discharged through the gas outlet 20; when the sixth valve 21 is closed, the gas outlet 20 is disconnected from the third pipeline 10.

[0057] In one embodiment, as shown in FIG1, the gas supply device 100 further includes a pressure sensor 22, which is used to detect the pressure in the first pipeline 4 in real time.

[0058] In one embodiment, as shown in FIG1, the air supply device 100 further includes a seventh valve 23, which is disposed between the air spring connection end 3 and the first pipeline 4. When the seventh valve 23 is opened, it enables the air spring connection end 3 to communicate with the first pipeline 4, allowing high-pressure gas to enter the air spring from the first pipeline 4.

[0059] In one embodiment, as shown in FIG1, multiple air spring connection ends 3 are provided, and multiple seventh valves 23 are provided, with each of the multiple air spring connection ends 3 corresponding to one of the multiple seventh valves 23.

[0060] In one embodiment, the first valve 5, the second valve 6, the third valve 15, the fourth valve 16, the fifth valve 18, the sixth valve 21, and the seventh valve 23 are all solenoid valves.

[0061] The working principle of the gas supply device 100 provided in this embodiment is as follows:

[0062] (1) During the process of external gas being pumped into the first air storage tank 1 by the air compressor 8, the air filter 11 and the first one-way valve 12 are opened, and the external gas enters the air compressor 8 through the second pipeline 9. The third valve 15, the fourth valve 16, and the first valve 5 are opened, allowing the high-pressure gas output by the air compressor 8 to enter the first air storage tank 1 through the third pipeline 10 and the fourth pipeline 14. The pressure sensor 22 detects the real-time pressure. After the gas storage is completed, all valves are closed. It should be noted that during this process, the second valve 6 can also be opened simultaneously to allow the high-pressure gas to enter the second air storage tank 2.

[0063] (2) The high-pressure gas in the first air tank 1 directly inflates the air springs at the air spring connection end 3 to achieve lifting. During this process, the fourth valve 16, the first valve 5, and each of the seventh valves 23 are opened, allowing the high-pressure gas in the first air tank 1 to enter each air spring along the fourth pipe 14 and the first pipe 4, completing the vehicle lifting. It should be noted that during this process, the second valve 6 can also be opened simultaneously, allowing the high-pressure gas in the second air tank 2 to inflate the air springs to achieve lifting. In addition, during this process, the compressed gas in the first air tank 1 and the second air tank 2 will not enter the air compressor 8 or the gas dryer 13.

[0064] (3) External gas is directly inflated into the air springs via the air compressor 8 to lift the vehicle. During this process, the air filter 11 and the first one-way valve 12 are open, and the external gas enters the air compressor 8 through the second pipeline 9. The third valve 15 and each of the seventh valves 23 are opened, allowing the high-pressure gas output from the air compressor 8 to enter each air spring along the third pipeline 10, the first pipeline 4, and the air spring connection end 3, thus lifting the vehicle.

[0065] (4) External high-pressure gas fills each gas storage tank. The second one-way valve 19, the first valve 5, and the fourth valve 16 are opened. Through real-time detection by the pressure sensor 22, the first gas storage tank 1 is filled with gas to the set pressure. Then, the first valve 5 is closed, and each of the seventh valves 23 is opened simultaneously. After the air spring has completed lifting, each of the seventh valves 23 is closed, and the second valve 6 and the third valve 15 are opened to complete the filling of the second gas storage tank 2.

[0066] (5) Air spring directly releases air. During this process, each of the seventh valves 23 opens, and the fourth valve 16, the fifth valve 18, and the sixth valve 21 open simultaneously, thus completing the exhaust from the outlet end 20. It should be noted that the third valve 15 remains closed during the process, allowing all the high-pressure gas to flow through the drying box, so that the drying box can carry away the moisture in the high-pressure gas.

[0067] (6) Air spring exhaust and pressurization: The high-pressure gas inside the air spring is pressurized and then re-enters the air storage tank for direct supply during the next operation. During this process, the fourth valve 16 and the fifth valve 18 are opened, the seventh valves 23 are opened simultaneously, and the second valve 6 is opened, so that the depressurized gas of the air spring enters the second air storage tank 2 in sequence through the seventh valve 23, the fourth valve, the fifth valve 18 and the second valve 6, thus completing the pressurization and storage of the residual pressure gas of the air spring.

[0068] (7) The exhaust gas from the air spring is directly recycled and stored in the air tank. The pressure sensor 22 reads the internal pressure of the air spring and the pressure of each air tank. When the air spring pressure value is greater than the pressure of a certain air tank, the corresponding valve is directly opened to store the high-pressure gas in the lower-pressure air tank.

[0069] (8) System pressure reading: By opening the valve to connect the air path, the pressure sensor 22 can obtain the corresponding pressure.

[0070] (9) The residual pressure gas in the first gas storage tank 1 is rapidly lifted and pressurized. The residual pressure gas remaining in the first gas storage tank 1 after being lifted is then passed through the fourth valve 16 and the fifth valve 18 to the air compressor 8 for repressurization, which in turn lifts the air spring, shortening the external air source pressurization time. It should be noted that during this process, the second valve 6 is closed and the second gas storage tank 2 is disconnected.

[0071] (10) The residual pressure gas in the first gas storage tank 1 is pressurized and stored. The first valve 5, the fourth valve 16 and each of the seventh valves 23 are opened. The first gas storage tank 1 first supplies air to the air spring to complete the lifting. After the lifting, the fifth valve 18 is opened. The residual pressure gas can be pressurized by the air compressor 8 and stored in the second gas storage tank 2 to realize the utilization of residual pressure gas and complete energy recovery.

[0072] The gas supply device 100 provided in this application embodiment has the following advantages:

[0073] (1) Since the air supply device 100 provided in this application embodiment reduces the process of direct pressurization of external air source, it can reduce the adverse effects caused by the accumulation of external air in the system, improve the reliability of the rectification system, improve the response speed of system lifting, shorten the service time of air compressor 8, extend the life cycle of the overall system, and reduce the cost of use.

[0074] (2) The gas supply device 100 provided in this application embodiment not only realizes the recompression of low-pressure gas in the gas storage tank and completes the rapid response pressurization of the three air springs at the air spring connection end, but also realizes the reuse of residual energy of high-pressure gas in the air spring and the reuse of low-pressure gas in the system, thereby achieving the effects of reducing energy consumption and noise reduction.

[0075] (3) Two gas tanks can reduce the volume of a single gas tank, thereby reducing the space requirements for the gas tanks on the vehicle and increasing the utilization rate of the vehicle body space.

[0076] As shown in Figure 2, the suspension air supply system 300 provided in this application embodiment includes an air suspension 301 and an air supply device 100 provided in the above embodiment.

[0077] The vehicle provided in this application embodiment includes the air supply device 100 or the suspension air supply system 300 provided in the above embodiments.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air supply device (100) includes a first air tank (1), a second air tank (2), a switching device (200), and an air spring connection end (3), wherein one end of the switching device (200) is connected to the first air tank (1) and the second air tank (2), and the other end of the switching device (200) is connected to the air spring connection end (3); the switching device (200) is used to control the on / off connection between the first air tank (1) and / or the second air tank (2) and the air spring connection end (3).

2. The gas supply device (100) according to claim 1, wherein, The air spring connection end (3) is provided in multiple ways, and the multiple air spring connection ends (3) are connected to the other end of the switching device (200).

3. The gas supply device (100) according to claim 1 or 2, wherein, The gas supply device (100) further includes an air compressor (8), the air inlet of which is used to receive external air or high-pressure gas, and the air outlet of which is connected to the first gas storage tank (1) and / or the second gas storage tank (2).

4. The gas supply device (100) according to claim 3, wherein, The air supply device (100) also includes an electric motor (7), which is electrically connected to the air compressor (8).

5. The gas supply device (100) according to claim 3, wherein, The gas supply device (100) further includes a gas dryer (13), the outlet of the air compressor (8) is connected to the inlet of the gas dryer (13), and the outlet of the gas dryer (13) is connected to the first gas storage tank (1) and / or the second gas storage tank (2).

6. The gas supply device (100) according to any one of claims 3 to 5, wherein, The gas supply device (100) further includes a first pipeline (4), and the other end of the switching device (200) and the air spring connection end (3) are respectively connected to the first pipeline (4).

7. The gas supply device (100) according to claim 6, wherein, The switching device (200) includes a first valve (5) and a second valve (6). The first valve (5) is connected between the first gas tank (1) and the first pipeline (4). When the first valve (5) is opened, it enables the first gas tank (1) to communicate with the first pipeline (4). The second valve (6) is connected between the second gas tank (2) and the first pipeline (4). When the second valve (6) is opened, it enables the second gas tank (2) to communicate with the first pipeline (4).

8. The gas supply device (100) according to claim 7, wherein, The first valve (5) and the second valve (6) are integrated into one unit.

9. The gas supply device (100) according to claim 7 or 8, wherein, The air supply device (100) further includes a third pipeline (10), which is connected between the air outlet of the air compressor (8) and the first pipeline (4). The second valve (6) is connected between the second air tank (2) and the third pipeline (10). When the second valve (6) is opened, it enables the second air tank (2) to be connected to the third pipeline (10).

10. The gas supply device (100) according to claim 9, wherein, A third valve (15) is provided between the third pipeline (10) and the first pipeline (4). When the third valve (15) is opened, it enables the first pipeline (4) to be connected to the third pipeline (10).

11. The gas supply device (100) according to claim 9 or 10, wherein, The gas supply device (100) further includes a fourth pipeline (14), which is connected to the first pipeline (4). The first valve (5) is connected between the first gas storage tank (1) and the fourth pipeline (14). When the first valve (5) is opened, it enables the first gas storage tank (1) to be connected to the fourth pipeline (14).

12. The gas supply device (100) according to claim 11, wherein, A fourth valve (16) is provided between the fourth pipeline (14) and the first pipeline (4). When the fourth valve (16) is opened, it enables the first pipeline (4) to be connected to the fourth pipeline (14).

13. The gas supply device (100) according to claim 11 or 12, wherein, The air supply device (100) further includes a first air inlet (101) and / or a second air inlet (102). The air inlet of the air compressor (8) is connected to the first air inlet (101); the second air inlet (102) is connected to the air inlet of the air compressor (8) and the first air storage tank (1); the first air inlet (101) is used to receive external air, and the second air inlet (102) is used to receive external high-pressure gas.

14. The gas supply device (100) according to claim 13, wherein, The first air inlet (101) includes an air filter (11) and a first one-way valve (12). The air inlet of the air filter (11) is used to connect to external air. The air inlet of the first one-way valve (12) is connected to the air outlet of the air filter (11). The air outlet of the first one-way valve (12) is connected to the air inlet of the air compressor (8).

15. The gas supply device (100) according to claim 13 or 14, wherein, The second air inlet (102) includes a second one-way valve (19), the air inlet of the second one-way valve (19) is used to connect to high-pressure gas, and the air outlet of the second one-way valve (19) is connected to the air inlet of the air compressor (8) and the first air storage tank (1).

16. The gas supply device (100) according to claim 14 or 15, wherein, The air supply device (100) further includes a second pipeline (9), which is connected between the outlet of the first one-way valve (12) and the inlet of the air compressor (8).

17. The gas supply device (100) according to claim 16, wherein, The gas supply device (100) also includes a fifth pipeline (17), a gas outlet (20) and a sixth valve (21), wherein the fifth pipeline (17) is connected between the fourth pipeline (14) and the second pipeline (9); A fifth valve (18) is provided between the fifth pipeline (17) and the fourth pipeline (14). When the fifth valve (18) is opened, it can connect the fourth pipeline (14) and the fifth pipeline (17). The sixth valve (21) is connected between the air outlet (20) and the third pipeline (10). When the sixth valve (21) is opened, it enables the air outlet (20) to communicate with the third pipeline (10). The outlet end (20) is used to discharge the gas inside the gas supply device (100).

18. The gas supply device (100) according to any one of claims 6 to 17, wherein, The air supply device (100) also includes a seventh valve (23), which is connected between the air spring connection end (3) and the first pipeline (4). When the seventh valve (23) is opened, it enables the air spring connection end (3) to communicate with the first pipeline (4).

19. The gas supply device (100) according to any one of claims 6 to 18, wherein, The gas supply device (100) also includes a pressure sensor (22), which is used to detect the pressure in the first pipeline (4).

20. A suspension air supply system (300) comprising an air suspension (301) and an air supply device (100) as described in any one of claims 1-19.

21. A vehicle comprising an air supply device (100) according to any one of claims 1-19 or a suspension air supply system (300) according to claim 20.

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