Air suspension system and vehicle

Abstract

The invention provides an air suspension system and a vehicle, the air suspension system comprises an air storage assembly, an air compression assembly, an external air inlet assembly and an air spring assembly, the air storage assembly comprises a first air storage tank and a second air storage tank, the first air storage tank is connected with the air compression assembly, and the second air storage tank is connected with the air spring assembly; the air compression assembly is connected with the second air storage tank, the air spring assembly and the external air inlet assembly. When the air spring assembly is inflated, the air compression assembly does not work, the second air storage tank directly inflates the air spring assembly, or the first air storage tank inflates the air spring assembly through the air compression assembly, the working frequency of the air compression assembly can be reduced, the temperature rise and noise of the air suspension system can be reduced, and the service life of the air compression assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of air suspension, and in particular to an air suspension system and a vehicle. Background Art

[0002] The automotive suspension system is a vital component of a vehicle. Its primary function is to transmit forces and torques between the wheels and the vehicle frame, cushion the impact of uneven road surfaces on the frame or body, and attenuate the resulting vibrations, ensuring smooth driving and improving stability and comfort. Air suspension is widely used in various vehicles due to its excellent performance, such as adjustable stiffness and damping.

[0003] However, the current automobile suspension system only has one air tank, which relies on a compressor to transfer the gas in the air tank and the air spring back and forth. This means that the compressor needs to work intermittently or even continuously, causing the system temperature to rise too quickly, resulting in high noise and high power consumption. Summary of the Invention

[0004] The purpose of this application is to provide an air suspension system and vehicle, in which two air storage tanks are used, and the air compression assembly can be stopped, thereby reducing the working frequency of the air compression assembly, which is beneficial to reducing the system temperature rise and noise and increasing the life of the compressor.

[0005] In the first aspect, an embodiment of the present application provides an air suspension system, comprising: an air storage assembly, an air compression assembly, an external air intake assembly, an air spring assembly and a valve body assembly, the air storage assembly comprising a first air tank and a second air tank, the valve body assembly comprising a first control valve, a second control valve, a third control valve and a fourth control valve, the first air tank being connected to the air compression assembly via the first control valve, the second air tank being connected to the air spring assembly via the third control valve, the air compression assembly being respectively connected to the second air tank, the air spring assembly and the external air intake assembly, one end of the second control valve being connected to the air path between the first control valve and the first air tank, and one end of the fourth control valve being connected to the air path between the air compression assembly and the second control valve.

[0006] In the above implementation process, the first air tank and the second air tank are respectively connected to the air compression assembly, and the air compression assembly and the second air tank are respectively connected to the air spring assembly, so that when the air spring assembly is inflated, the air compression assembly can be inactive and the air is directly inflated by the second air tank. Alternatively, in the descent mode, the air compression assembly is inactive and the gas in the air spring assembly enters the first air tank. This can reduce the operating frequency of the air compression assembly, help reduce the temperature rise and noise of the air suspension system, and increase the service life of the air compression assembly.

[0007] Moreover, the valve body assembly of the entire air suspension system only uses four valve bodies, namely the first control valve, the second control valve, the third control valve and the fourth control valve, which can reduce the complexity of the system, require smaller layout space and lower the cost.

[0008] In some embodiments, the air suspension system has multiple modes;

[0009] In the ascent mode, when the air pressure in the second air tank is sufficient to support ascent, the air compression assembly does not work, and the second air tank is connected to the air spring assembly;

[0010] In the descent mode, when the air pressure in the first air tank can meet the descent time requirement, the air compression assembly does not work, and the gas in the air spring assembly enters the first air tank.

[0011] In some embodiments, in the external replenishment mode, the air compression assembly is connected to the first air tank, and the first air tank is connected to the second air tank, wherein the air compression assembly pumps the gas entering the external air intake assembly into the first air tank, and the gas in the first air tank flows to the second air tank or the air spring assembly; or the air compression assembly is connected to the second air tank, wherein the air compression assembly pumps the gas entering the external air intake assembly into the second air tank.

[0012] In the above implementation process, when the system is in external supplement mode, the air compression assembly can supply external air into the first air tank, and then through pressure division, the first air tank supplies the gas into the second air tank. The whole process can reduce the workload of the air compression assembly, thereby improving the working stability and efficiency of the air compression assembly, and at the same time improving the NVH performance. Of course, the air compression assembly can also directly supply air to the second air tank, realizing multiple ways of air supply and reducing the working frequency of the air compression assembly.

[0013] In some embodiments, in the ascent mode, when the air pressure in the second air tank is insufficient, the air compression assembly operates and pumps the gas in the first air tank into the second air tank and / or the air spring assembly.

[0014] In some embodiments, the first gas storage tank comprises a low-pressure tank, and the second gas storage tank comprises a high-pressure tank.

[0015] In the above implementation process, by setting up a low-pressure tank and a high-pressure tank in the system, the air compression assembly may not work, reducing the working frequency of the air compression assembly, which is beneficial to reducing the temperature rise and noise of the air suspension system and increasing the service life of the air compression assembly.

[0016] In some embodiments, the air suspension system further includes a first air circuit, the first air circuit being connected to the air compression assembly and the first air storage tank respectively, and the first control valve being connected to the first air circuit.

[0017] In the above implementation process, the first control valve is arranged in the first gas circuit, and can be used to control the on-off of the first gas circuit, thereby realizing the use of multiple working conditions, reducing the layout space of the system and lowering the cost.

[0018] In some embodiments, the air suspension system further includes a second air circuit, one end of which is connected to the first air circuit between the first control valve and the first air tank, and the other end of which is connected to the air spring assembly.

[0019] In the above implementation process, the second control valve is arranged in the second gas circuit, which can be used to control the on-off of the second gas circuit, realize the use of multiple working conditions, reduce the layout space of the system, and reduce the cost.

[0020] In some embodiments, the air suspension system further includes a third air circuit, one end of the third air circuit is connected to the second air storage tank, and the other end is connected to the air compression assembly, and the third control valve is connected to the third air circuit.

[0021] In the above implementation process, the third control valve is arranged in the third gas path, which can be used to control the on-off of the third gas path, realize the use of multiple working conditions, reduce the layout space of the system, and lower the cost.

[0022] In some embodiments, the air suspension system further includes a fourth air circuit and a dryer, the dryer is connected to the third air circuit, the fourth air circuit is connected to the third air circuit between the dryer and the air compression assembly, and the fourth control valve is connected to the fourth air circuit.

[0023] In the above implementation process, the fourth control valve is arranged in the fourth air path, and the dryer is arranged in the third air path, which not only can realize the use of multiple working conditions, reduce the layout space of the system and lower the cost, but the dryer can also effectively prevent moisture and impurities in the air from affecting the air suspension system, such as corrosion, freezing, etc., thereby improving the performance and service life of the air suspension system. At the same time, the air suspension system can also back-blow the dryer to prevent impurities from entering the valve core.

[0024] In some embodiments, the air suspension system further includes a sensor connected to the second air path, which can be used to monitor pressure, facilitate system air replenishment, and report faults.

[0025] In some embodiments, the external air intake assembly includes a filter and a one-way valve, the filter is connected to the one-way valve, and the one-way valve is connected to the air path between the air compression assembly and the first air storage tank.

[0026] In some embodiments, the air spring assembly includes an air spring component and a solenoid valve component, and the solenoid valve component is connected to the air spring component.

[0027] In the above implementation process, the solenoid valve assembly can control the gas to enter or exhaust the air spring assembly, thereby realizing the rise or fall of the air spring assembly to meet the needs of different working conditions.

[0028] In a second aspect, the present application also provides a vehicle comprising an air suspension system as described in any one of the above items.

[0029] Since the vehicle provided in the second aspect includes an air suspension system, the vehicle has all the technical effects of the air suspension system and will not be elaborated here.

[0030] Other features and advantages of the present application will be described in the subsequent description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology of the present application.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic structural diagram of the air suspension system provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the principle of the rising mode of the air suspension system provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the principle of the descent mode of the air suspension system provided in an embodiment of the present application;

[0036] Figure 4 A schematic diagram of the principle of the external supplement mode of the air suspension system provided in an embodiment of the present application.

[0037] Reference numerals

[0038] 10. Air storage assembly; 101. First air storage tank; 102. Second air storage tank; 20. Air compression assembly; 30. External air intake assembly; 301. Filter; 302. One-way valve; 40. Air spring assembly; 401. Air spring; 402. Air solenoid valve; 50. First air path; 51. First control valve; 60. Second air path; 61. Second control valve; 70. Third air path; 71. Third control valve; 80. Fourth air path; 81. Dryer; 82. Fourth control valve; 90. Safety valve; 100. Sensor. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0040] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or point connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0042] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0043] Example

[0044] Most cars on the market use air suspension systems to change the height of the vehicle body and adjust the stiffness or damping of the suspension, thereby improving driving comfort. The air supply part of the air suspension system consists of a compressor, an air tank, and multiple air springs. The compressor is connected to the air tank and multiple air springs through pipelines. The compressor inflates or deflates the air tank or air spring. The higher the air pressure inside the air spring, the greater the spring stiffness, and the lower the air pressure inside the air spring, the smaller the spring stiffness.

[0045] like Figure 1 As shown, in the present application, on the first aspect, an embodiment of the present application provides an air suspension system, including: an air compression assembly 20, an air storage assembly 10 and an air spring assembly 40, etc. The air compression assembly 20 is respectively connected to the air storage assembly 10 and the air spring assembly 40, and the air storage assembly 10 is provided with two tank bodies, which can realize inflation or deflation of the air spring assembly 40 by controlling the two tank bodies.

[0046] Specifically, if Figure 1 As shown, the air suspension system includes an air storage assembly 10, an air compression assembly 20, an external air intake assembly 30 and an air spring assembly 40. The air storage assembly 10 includes a first air tank 101 and a second air tank 102. The first air tank 101 is connected to the air compression assembly 20, and the second air tank 102 is connected to the air spring assembly 40. The air compression assembly 20 is respectively connected to the second air tank 102, the air spring assembly 40 and the external air intake assembly 30.

[0047] For example, the external air intake assembly 30 is connected to the atmosphere, the air compression assembly 20 is connected to the external air intake assembly 30, and the first air tank 101 and the second air tank 102 of the air storage assembly 10 are both connected to the air compression assembly 20, so that after the air suspension system distributes the air path, the air spring assembly 40 can be raised by inflation, and the air spring assembly 40 can be lowered by exhausting. In this way, the air spring assembly 40 is inflated or exhausted, thereby realizing the lifting and lowering of the vehicle; and there are two ways to inflate the air spring assembly 40, one is through the air storage assembly 10, and the other is through the external air intake assembly 30.

[0048] Among them, the air compression assembly 20 includes a compressor, which can be used for gas transportation. It is a machine that mainly compresses gas, increases the gas pressure, and then transports the gas; and the gas storage assembly 10 includes a first gas tank 101 and a second gas tank 102. There is a pressure difference between the gas inside the first gas tank 101 and the second gas tank 102. For example, the first gas tank 101 withstands a lower pressure and can be suitable for storing low-pressure gas. The second gas tank 102 withstands a higher pressure and can be suitable for storing high-pressure gas; the air spring assembly 40 can be used as a core component of the vehicle suspension. It is a spring that uses gas as an elastic medium. Its main principle is to use the reaction force of the compression inside the rubber airbag as an elastic element of the elastic restoring force.

[0049] In the above-mentioned implementation process, the first air tank 101 and the second air tank 102 are respectively connected to the air compression assembly 20, and the air compression assembly 20 and the second air tank 102 are respectively connected to the air spring assembly 40, so that when the air spring assembly 40 is inflated, the air compression assembly 20 may not work, and the second air tank 102 may directly inflate the air, or the first air tank 101 may inflate the air spring assembly 40 through the air compression assembly 20, etc. This can reduce the working frequency of the air compression assembly 20, which is beneficial to reducing the temperature rise and noise of the air suspension system and improving the service life of the air compression assembly 20.

[0050] Please refer to Figure 1 , in the external supplement mode, the air compression assembly 20 is connected to the first air storage tank 101, and the first air storage tank 101 is connected to the second air storage tank 102;

[0051] Or the air compression assembly 20 is connected to the second air storage tank 102 .

[0052] Illustratively, under this working condition, the air compression assembly 20 compresses the air in the atmosphere through the external air intake assembly 30, and then delivers it to the first air tank 101, and then supplies it to the second air tank 102 and / or the air spring assembly 40, thereby inflating the second air tank 102 or the air spring assembly 40.

[0053] In the above-mentioned implementation process, when the system is in the external supplement mode, the air compression assembly 20 can supply external air into the first air tank 101, and then through pressure division, the first air tank 101 supplies the gas into the second air tank 102. The whole process can reduce the workload of the air compression assembly 20, thereby improving the working stability and efficiency of the air compression assembly 20, and at the same time improving the NVH performance. Of course, the air compression assembly 20 can also directly supply air to the second air tank 102, realizing multiple modes of air supply and reducing the working frequency of the air compression assembly 20.

[0054] In some embodiments, the first gas tank 101 comprises a low-pressure tank, and the second gas tank 102 comprises a high-pressure tank. That is, the pressure of the gas stored in the first gas tank 101 is lower than the pressure of the gas stored in the second gas tank 102. The first gas tank 101 is connected to the air inlet of the air compression assembly 20, and the second gas tank 102 is connected to the air outlet of the air compression assembly 20.

[0055] In the above implementation process, by setting a low-pressure tank and a high-pressure tank in the system, the air compression assembly 20 may not work, reducing the working frequency of the air compression assembly 20, which is beneficial to reducing the temperature rise and noise of the air suspension system and increasing the service life of the air compression assembly 20.

[0056] In some embodiments, the air suspension system also includes a first air circuit 50 and a first control valve 51. The first air circuit 50 is respectively connected to the air inlet end of the air compression assembly 20 and the first air storage tank 101. The first control valve 51 is connected to the first air circuit 50. The first control valve 51 includes a two-position two-way valve. The main working principle is to control the opening and closing of the valve through electromagnetic force, thereby controlling the flow of gas. The first control valve 51 has a simple structure and reliable operation, and can be used to control complex processes.

[0057] In the above implementation process, the first control valve 51 is provided in the first gas path 50 and can be used to control the on-off of the first gas path 50 , thereby realizing the use of multiple working conditions, reducing the layout space of the system and lowering the cost.

[0058] In some embodiments, the air suspension system also includes a second air circuit 60 and a second control valve 61. One end of the second air circuit 60 is connected to the first air circuit 50 between the first control valve 51 and the first air tank 101, and the other end is connected to the air spring assembly 40. The second control valve 61 includes a two-position two-way valve. The main working principle is to control the opening and closing of the valve through electromagnetic force, thereby controlling the flow of gas. The second control valve 61 has a simple structure and reliable operation, and can be used to control complex processes.

[0059] In the above implementation process, the second control valve 61 is provided in the second gas path 60 and can be used to control the on-off of the second gas path 60, thereby realizing the use of multiple working conditions, reducing the layout space of the system and lowering the cost.

[0060] In some embodiments, the air suspension system also includes a third air circuit 70 and a third control valve 71. One end of the third air circuit 70 is connected to the second air storage tank 102, and the other end is connected to the air compression assembly 20. The third control valve 71 is connected to the third air circuit 70, wherein the third control valve 71 includes a two-position two-way valve. The main working principle is to control the opening and closing of the valve through electromagnetic force, thereby controlling the flow of gas. The third control valve 71 has a simple structure and reliable operation, and can be used to control complex processes.

[0061] In the above implementation process, the third control valve 71 is provided in the third gas path 70 and can be used to control the on-off of the third gas path 70, thereby realizing the use of multiple working conditions, reducing the layout space of the system and lowering the cost.

[0062] In some embodiments, the air suspension system also includes a fourth air circuit 80, a dryer 81 and a fourth control valve 82. The dryer 81 is connected to the third air circuit 70. The fourth air circuit 80 is connected to the third air circuit 70 between the dryer 81 and the air compression assembly 20. The fourth control valve 82 is connected to the fourth air circuit 80. The fourth control valve 82 includes a two-position two-way valve. The main working principle is to control the opening and closing of the valve by electromagnetic force, thereby controlling the flow of gas. The fourth control valve 82 has a simple structure and reliable operation and can be used to control complex processes.

[0063] It can be understood that the first control valve 51, the second control valve 61, the third control valve 71 and the fourth control valve 82 all adopt two-position two-way valves. Compared with the two-position two-way valve or the combination of several two-position three-way valves and several two-position two-way valves used in the system on the current market, the two-position three-way valve is more complex in structure and more expensive than the two-position two-way valve. The present application has only four valve bodies for controlling the air circuit, so the required layout space is smaller and the cost is lower.

[0064] In the above implementation process, the fourth control valve 82 is arranged in the fourth air path 80, and the dryer 81 is arranged in the third air path 70. This not only enables the use of multiple working conditions, reduces the system layout space, and reduces the cost, but the dryer 81 can also effectively prevent moisture and impurities in the air from affecting the air suspension system, such as corrosion, freezing, etc., thereby improving the performance and service life of the air suspension system. At the same time, the air suspension system can also backflush the dryer 81 to prevent impurities from entering the valve core.

[0065] In some embodiments, the air suspension system further includes a sensor 100 connected to the second air path 60. Sensor 100 includes a differential pressure sensor. To test the pressure of a particular air spring 401, simply open the corresponding air solenoid valve 402 to open the second air path 60 and monitor the pressure using sensor 100. This allows for pressure monitoring, system air replenishment, and fault reporting.

[0066] In some embodiments, the external air intake assembly 30 includes a filter 301 and a one-way valve 302 . The filter 301 is connected to the one-way valve 302 , and the one-way valve 302 is connected to the air path between the air compression assembly 20 and the first air storage tank 101 .

[0067] Of course, the air suspension system also includes a safety valve 90. The outlet end of the air compression assembly 20 is connected to the air inlet end of the one-way valve 302 and the outlet end of the one-way valve 302 through the safety valve 90. Through the setting of the safety valve 90, when the internal pressure of the air suspension system is too high, the safety valve 90 will play a role to avoid damage to the internal components of the air suspension system due to excessive pressure, while also ensuring the overall safety of the air suspension system.

[0068] In some embodiments, the air spring assembly 40 includes an air spring component and a solenoid valve component, and the solenoid valve component is connected to the air spring component.

[0069] Exemplarily, the air spring assembly includes several air springs 401, and the solenoid valve assembly includes several air solenoid valves 402. The number of air springs 401 can correspond one-to-one to the number of air solenoid valves 402. Of course, in other embodiments, multiple air springs 401 can also be connected to the same air solenoid valve 402.

[0070] In one scheme of the present application, the air solenoid valve 402 includes a two-position two-way valve, and the number of the air solenoid valves 402 is set to four, so the entire air suspension system is provided with eight two-position two-way valves. Compared with the traditional design scheme, not only the number of valve bodies is reduced, thereby reducing the layout space and lowering the cost, but also the overall structural design of the air suspension system can be made simpler.

[0071] In the above implementation process, the solenoid valve assembly can control the gas to enter or exhaust the air spring assembly, thereby realizing the rise or fall of the air spring assembly to meet the needs of different working conditions.

[0072] The air suspension system includes the following working modes:

[0073] 1. Rising Mode

[0074] like Figure 1 As shown, when the air pressure in the second air tank 102 is sufficient to support the vehicle body to rise, the third control valve 71 works, the air compression assembly 20 does not work, the multiple air spring solenoid valves work, the gas in the second air tank 102 enters the air spring 401, and the vehicle body rises;

[0075] When the air pressure in the second air tank 102 is insufficient to support the vehicle body to rise, the air compression assembly 20 operates, the first control valve 51 operates, the third control valve 71 operates, and the multiple air spring solenoid valves operate. The air compression assembly 20 pumps the air in the first air tank 101 into the air spring 401 and the second air tank 102. The air path between the second air tank 102 and the air spring 401 is in a connected state, and the vehicle body rises.

[0076] It should be noted that in this ascending mode, the logic for inflating the air spring assembly can be to inflate the four air springs 401 in sequence, or to inflate the two air springs 401 on the rear axle first, and then to inflate the two air springs 401 on the front axle, etc. Of course, there can also be other inflation logics, which are not specifically limited here.

[0077] 2. Descending Mode

[0078] like Figure 1 As shown, when the pressure of the first air tank 101 can meet the vehicle body lowering time requirement, multiple air spring solenoid valves work, the second control valve 61 works, and the gas in the air spring 401 enters the first air tank 101;

[0079] When the pressure in the first air tank 101 does not meet the vehicle body lowering time requirement, multiple air spring solenoid valves work, the first control valve 51 opens, the second control valve 61 opens, and the third control valve 71 opens. The air compression assembly 20 pumps the gas in the first air tank 101 and the air spring 401 into the second air tank 102. The air path between the first air tank 101 and the air spring 401 is in a connected state, and the vehicle body lowers.

[0080] 3. Regeneration Mode

[0081] The third control valve 71 works, the fourth control valve 82 works, and the gas in the second gas storage tank 102 is discharged into the atmosphere through the dryer 81. That is, through the connection between the third gas path 70 and the fourth gas path 80, the dryer 81 is purged and the dryer 81 is cleaned.

[0082] 4. Maintenance Mode

[0083] The first control valve 51 works, the second control valve 61 works, the air solenoid valve 402 works, and the gas in the air spring 401 and the first air storage tank 101 is discharged into the atmosphere.

[0084] 5. External Supplementation Model

[0085] The air compression assembly 20 works, the third control valve 71 works, the air compression assembly 20 draws air from the atmosphere and supplies compressed gas to the second air storage tank 102;

[0086] Alternatively, the air compression assembly 20 is in operation, the first control valve 51 is in operation, the second control valve 61 is in operation, and the third control valve 71 is controlled. The air compression assembly 20 draws air from the atmosphere and supplies compressed gas to the first air tank 101. After pressure division, the gas is supplied to the second air tank 102. Of course, the gas compressed by the air compression assembly 20 can also be directly supplied to the air spring 401, etc.

[0087] In a second aspect, the present application also provides a vehicle comprising the air suspension system as described above.

[0088] For example, the air suspension system is connected to the vehicle body and suspension respectively. When the vehicle is raised, the vehicle's control unit can control the valve body opening and closing combination of the air suspension system and the start or stop of the air compression assembly 20 according to information such as the vehicle bus signal, and fill or discharge gas into or out of the air spring assembly 40, thereby realizing the lifting and lowering of the vehicle.

[0089] Among them, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0090] Since the vehicle provided in the second aspect includes an air suspension system, the vehicle has all the technical effects of the air suspension system and will not be elaborated here.

[0091] It should be understood that the phrases “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0092] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0093] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An air suspension system, characterized in that: include: An air storage assembly, an air compression assembly, an external air intake assembly, an air spring assembly and a valve body assembly. The air storage assembly includes a first air tank and a second air tank. The valve body assembly includes a first control valve, a second control valve, a third control valve and a fourth control valve. The first air tank is connected to the air compression assembly through the first control valve, and the second air tank is connected to the air spring assembly through the third control valve. The air compression assembly is respectively connected to the second air tank, the air spring assembly and the external air intake assembly. One end of the second control valve is connected to the air path between the first control valve and the first air tank, and one end of the fourth control valve is connected to the air path between the air compression assembly and the second control valve.

2. The air suspension system according to claim 1, characterized in that: The air suspension system has multiple modes; In the ascent mode, when the air pressure in the second air tank is sufficient to support ascent, the air compression assembly does not work, and the second air tank is connected to the air spring assembly; In the descent mode, when the air pressure in the first air tank can meet the descent time requirement, the air compression assembly does not work, and the gas in the air spring assembly enters the first air tank.

3. The air suspension system according to claim 1, characterized in that: In the external replenishment mode, the air compression assembly is in communication with the first air tank, and the first air tank is in communication with the second air tank, wherein the air compression assembly pumps the gas entering the external air intake assembly into the first air tank, and the gas in the first air tank flows to the second air tank or the air spring assembly; Or the air compression assembly is connected to the second air storage tank, wherein the air compression assembly pumps the gas entering the external air intake assembly into the second air storage tank.

4. The air suspension system according to claim 2, characterized in that: In the ascending mode, when the air pressure in the second air tank is insufficient, the air compression assembly works and pumps the gas in the first air tank into the second air tank and / or the air spring assembly.

5. The air suspension system according to claim 1 or 3, characterized in that: The first gas storage tank includes a low-pressure tank, and the second gas storage tank includes a high-pressure tank.

6. The air suspension system according to claim 1 or 5, characterized in that: The air suspension system further includes a first air circuit, the first air circuit being connected to the air compression assembly and the first air storage tank respectively, and the first control valve being connected to the first air circuit.

7. The air suspension system according to claim 6, characterized in that: The air suspension system further includes a second air circuit, one end of which is connected to the first air circuit between the first control valve and the first air tank, and the other end of which is connected to the air spring assembly.

8. The air suspension system according to claim 6, characterized in that: The air suspension system further includes a third air circuit, one end of the third air circuit is connected to the second air storage tank, and the other end is connected to the air compression assembly, and the third control valve is connected to the third air circuit.

9. The air suspension system according to claim 8, characterized in that: The air suspension system also includes a fourth air circuit, a dryer and a fourth control valve. The dryer is connected to the third air circuit. The fourth air circuit is connected to the third air circuit between the dryer and the air compression assembly. The fourth control valve is connected to the fourth air circuit.

10. The air suspension system according to claim 7, characterized in that: The air suspension system further includes a sensor connected to the second air path.

11. The air suspension system according to any one of claims 1 to 3, characterized in that: The external air intake assembly includes a filter and a one-way valve. The filter is connected to the one-way valve, and the one-way valve is connected to the air path between the air compression assembly and the first air storage tank.

12. The air suspension system according to any one of claims 1 to 3, characterized in that: The air spring assembly includes an air spring component and a solenoid valve component, and the solenoid valve component is connected to the air spring component.

13. A vehicle, characterized in that: Comprising the air suspension system according to any one of claims 1 to 12.

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