Suspension system and vehicle

Abstract

The utility model discloses a suspension system and a vehicle, relates to the technical field of vehicles, and aims to solve the technical problem that when the pressure difference value between an accumulator and a suspension device is small, the adjustment speed of the height of a vehicle body is low. The suspension system comprises a suspension device, an accumulator, a compressor and a valve, and the suspension device is suitable for ascending when fluid is filled and descending when fluid is discharged; the suspension device comprises a first suspension device and a second suspension device; the storage device can recover the fluid discharged by the suspension device and input the stored fluid into the suspension device; the storage device comprises a first storage device connected with the first suspension device and a second storage device connected with the second suspension device; the compressor is connected with the first suspension device and the second suspension device; the valve comprises a first valve arranged between the compressor and the first suspension device and a second valve arranged between the compressor and the second suspension device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a suspension system and a vehicle. BACKGROUND

[0002] With the rapid development of global new energy vehicles, major enterprises have arranged new technologies, among which the suspension system, as one of the cores of electric vehicles, is a key component that affects the driving performance of the vehicle. The suspension system is connected between the axle and the vehicle body of the vehicle, and serves as an important combination device for transmitting the force and torque acting between the axle and the vehicle body.

[0003] In some suspension systems (for example, air suspension systems) of the related art, the suspension system can also adjust the height of the vehicle body, wherein the suspension system usually includes an accumulator and a suspension device, and the suspension system usually adjusts the height of the vehicle body through the pressure difference between the accumulator and the suspension device. For example, when the vehicle body needs to be raised, the compressed air in the accumulator enters the suspension device to make the suspension device expand, thereby lifting the vehicle body; when the vehicle body needs to be lowered, a part of the air in the suspension device is discharged to the accumulator and then to the atmosphere, the suspension device shrinks, and the height of the vehicle body is lowered.

[0004] Therefore, the adjustment speed of the height of the vehicle body is undoubtedly closely related to the size of the pressure difference between the accumulator and the suspension device. The pressure difference between the accumulator and the suspension device is not fixed, and it is usually affected by the load of the vehicle, the driving conditions and other factors. Therefore, when the pressure difference between the accumulator and the suspension device is small, the adjustment speed of the height of the vehicle body will be reduced, which will result in a long time for adjusting the height of the vehicle body and affect the driving experience of the user. UTILITY MODEL CONTENT

[0005] The embodiment provides a suspension system and a vehicle, which are used to solve the technical problem of slow adjustment speed of the height of the vehicle body when the pressure difference between the accumulator and the suspension device is small.

[0006] In a first aspect, the present application provides an air suspension system, which comprises a suspension device, an accumulator, a compressor and a valve. The suspension device is adapted to rise when fluid is filled therein and to descend when fluid is discharged therefrom. The suspension device comprises a first suspension device and a second suspension device. The accumulator is capable of recovering the fluid discharged from the suspension device and inputting the stored fluid into the suspension device. The accumulator comprises a first accumulator connected with the first suspension device and a second accumulator connected with the second suspension device. The compressor is connected with both the first suspension device and the second suspension device. The valve comprises a first valve arranged between the compressor and the first suspension device and a second valve arranged between the compressor and the second suspension device.

[0007] The suspension device of the embodiments of the present application is suitable for rising when fluid is filled, falling when fluid is discharged, and the accumulator can recover the fluid discharged by the suspension device and input the stored fluid into the suspension device; thus, when the vehicle body needs to be raised, the fluid in the accumulator can be flowed into the suspension device to raise the vehicle body, and when the vehicle body needs to be lowered, the fluid in the suspension device can be flowed into the accumulator to lower the vehicle body.

[0008] In addition, since the suspension device further comprises a compressor connected with the first suspension device and the second suspension device, a first valve arranged between the compressor and the first suspension device, and a second valve arranged between the compressor and the second suspension device, the first suspension device and the second suspension device can be controlled to communicate with the compressor by controlling the opening and closing of the first valve and the second valve; thus, when the pressure difference between any one of the first suspension device or the second suspension device and the accumulator connected therewith is small, the compressor can be started to directly discharge the pressurized fluid into the first suspension device or the second suspension device. Thus, the efficiency of the vehicle body height adjustment is improved, the speed of the vehicle body height adjustment is prevented from being reduced when the pressure difference between the accumulator and the suspension device is small, and the driving experience of the driver and the passenger is improved.

[0009] In some embodiments of the present application, the compressor comprises an exhaust port; the suspension system further comprises a first flow channel and a second flow channel, the first flow channel is communicated between the first accumulator and the exhaust port, the second flow channel is communicated between the second accumulator and the exhaust port, the first valve is arranged in the first flow channel, and the second valve is arranged in the second flow channel.

[0010] In some embodiments of the present application, the first suspension device can be provided in plurality, and the second suspension device can also be provided in plurality. The first suspension device comprises a first on-off valve and a first air spring, the first on-off valve is connected between the first flow channel and the first air spring, and the first air spring is suitable for filling or discharging the fluid to raise or lower the first suspension device. In addition, the first on-off valve is arranged between the first flow channel and the first air spring to control the on-off of the first air spring and the first flow channel by opening and closing. The second suspension device comprises a second on-off valve and a second air spring, the second on-off valve is arranged between the second flow channel and the second air spring to control the on-off of the second air spring and the second flow channel by opening and closing.

[0011] In some embodiments of the present application, the first flow channel comprises a first branch provided with the first valve and a first main flow path connected between the first branch and the exhaust port; the second flow channel comprises a second branch connected with the first main flow path, and the second valve is arranged in the second branch; the second branch and the first main flow path jointly constitute at least part of the second flow channel.

[0012] In some embodiments of the present application, the suspension system further comprises a first check valve disposed on the first main flow path, the first check valve being adapted to allow fluid to flow out of the compressor discharge port and through the first main flow path.

[0013] In some embodiments of the present application, the suspension system further comprises a check throttle disposed on the first main flow path in parallel with the first check valve, the check throttle being adapted to allow fluid to flow out of the compressor discharge port and through the first main flow path.

[0014] In some embodiments of the present application, the suspension system further comprises an exhaust assembly connected between the check throttle and the compressor discharge port and being in communication with the first main flow path.

[0015] In some embodiments of the present application, the exhaust assembly comprises an exhaust flow path in communication with the first main flow path and having an exhaust port disposed thereon; and a third valve disposed on the exhaust flow path between the first main flow path and the exhaust port.

[0016] In some embodiments of the present application, the suspension system further comprises a third flow path connected between the first accumulator and the first suspension device, and a fourth flow path connected between the second accumulator and the second suspension device.

[0017] In some embodiments of the present application, the suspension system further comprises a fourth valve disposed on the third flow path and adapted to communicate or block the first accumulator and the first suspension device, and a fifth valve disposed on the second flow path and adapted to communicate or block the second accumulator and the second suspension device.

[0018] In some embodiments of the present application, the third flow path is connected to the first branch, and the fourth flow path is connected to the second branch.

[0019] In some embodiments of the present application, the suspension system further comprises a fifth flow path connected between the first accumulator and the first main flow path, a sixth valve disposed on the fifth flow path, and a seventh valve disposed on the first main flow path, the connection between the first accumulator and the first main flow path being located between the seventh valve and the first check valve.

[0020] In some embodiments of the present application, the compressor comprises a suction port; the suspension system further comprises a sixth flow path connected between the accumulator and the compressor suction port, and an eighth valve disposed on the sixth flow path.

[0021] In some embodiments of the present application, the compressor further comprises a makeup port; the suspension system further comprises a suction assembly connected to the suction port and in communication with the makeup port.

[0022] In some embodiments of this application, the suspension system air intake assembly includes: an air intake path connected to an air intake port, and an air intake hole provided on the air intake path; and a second one-way valve provided on the air intake path and located between the air intake port and the air intake hole, the second one-way valve being adapted to allow external gas to flow into the air intake port and / or the air replenishment port.

[0023] In some embodiments of this application, the suspension system further includes a seventh flow channel connected between the intake port and the first main flow path, wherein the connection between the seventh flow channel and the first main flow path is located between the seventh valve and the first branch path; and a ninth valve disposed on the seventh flow channel.

[0024] In some embodiments of this application, the suspension system further includes a power limiting valve, which includes a first port, a second port, and a third port. The first port is connected to the exhaust port, the second port is connected to the intake port, and the third port is adapted to be connected to the outside air.

[0025] In some embodiments of this application, the air intake component includes: an air intake path connected to an air intake port, and an air intake hole provided on the air intake path; the third port is connected to the air intake hole.

[0026] In some embodiments of this application, the suspension system further includes a pressure detection device connected to the first main road, adapted to detect the pressure value of the first main road.

[0027] Secondly, embodiments of this application also provide a vehicle that includes the hydraulic suspension system described in the first aspect above.

[0028] It should be noted that the technical effects of the second implementation method can be found in the technical effects of the corresponding implementation method in the first aspect, and will not be repeated here. Attached Figure Description

[0029] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution.

[0030] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the connection structure of a hydraulic suspension system provided in an embodiment of this application.

[0032] Attached image reference numerals: 1000, Vehicle;

[0033] 100, vehicle body; 200, wheel; 200A, front wheel; 200B, rear wheel; 300, axle; 300A, first axle; 300B, second axle;

[0034] 400. Suspension system; 10. Suspension assembly; 10A. First suspension assembly; 10B. Second suspension assembly; 101. First air spring; 102. First on / off valve; 103. Second air spring; 104. Second on / off valve; 20. Accumulator; 201. First accumulator; 202. Second accumulator; 30. Valve; 301. First valve; 302. Second valve; 303. Third valve; 304. Fourth valve; 305. Fifth valve; 306. Sixth valve; 307. Seventh valve; 308. Eighth valve; 309. Ninth valve; 40. Check valve; 401. First check valve; 402. Second check valve; 501. First flow channel; 502. Second flow channel; 50 3. Third flow channel; 504. Fourth flow channel; 505. Fifth flow channel; 506. Sixth flow channel; 507. Seventh flow channel; 601. First branch; 602. Second branch; 70. First main flow channel; 80. Exhaust assembly; 801. Exhaust flow path; 90. Intake assembly; 901. Intake flow path; 11. Compressor; 111. Exhaust port; 112. Intake port; 113. Make-up air port; 12. One-way throttle valve; 13. Drying unit; 14. Exhaust port; 15. Intake port; 16. Power limiting valve; 161. First port; 162. Second port; 163. Third port; 17. Pressure detection device; 80. Exhaust assembly; 801. Exhaust flow path; 90. Intake assembly; 901. Intake flow path. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0039] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0040] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0041] This application provides a vehicle 1000. The vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a gasoline vehicle, etc. The vehicle 1000 can also be a sedan, a truck, a bus, a lorry, a trailer, etc.

[0042] like Figure 1 As shown, Figure 1 This is a schematic diagram of a vehicle structure provided in an embodiment of this application. The vehicle 1000 includes a body 100 and wheels 200. The body 100 is used for passengers and for carrying goods, and the wheels 200 are installed under the body 100 to support the body 100 and to roll on the road surface so that the vehicle 1000 can move.

[0043] For example, the wheel 200 may include a front wheel 200A and a rear wheel 200B, the front wheel 200A may include a left front wheel and a right front wheel, and the rear wheel 200B may include a left rear wheel and a right rear wheel.

[0044] In some embodiments, the vehicle 1000 further includes an axle 300, which is a component connecting the wheel 200 and the body 100. The axle 300 can also be referred to as an axle. Its main function is to bear the weight of the body 100 and distribute it to the wheel 200, while transmitting force and torque between the body 100 and the wheel 200 to maintain the normal driving of the vehicle 1000 on the road.

[0045] For example, the axle 300 may include a first axle 300A and a second axle 300B. The first axle 300A is located at the front of the vehicle 1000 and is connected between the left front wheel and the right front wheel. The second axle 300B is located at the rear of the vehicle 1000 and is connected between the left rear wheel and the right rear wheel.

[0046] Please see Figure 1 and Figure 2 , Figure 2 A schematic diagram of a suspension system 400 provided in an embodiment of this application is shown. In some embodiments, the vehicle 1000 further includes a suspension system 400. The suspension system 400 is disposed between the vehicle body 100 and the axle 300. The function of the suspension system 400 is to transmit the forces and torques acting between the wheels 200 and the vehicle body 100, buffer vibrations and impacts caused by uneven road surfaces, ensure the smoothness and stability of the vehicle 1000, and simultaneously allow the wheels 200 to move relative to the vehicle body 100, ensuring the handling stability of the vehicle 1000.

[0047] In some embodiments of this application, the suspension system 400 can also adjust the height of the vehicle body 100. The suspension system 400 includes: a suspension device 10, a accumulator 20, a compressor 11, and a valve 30.

[0048] The suspension device 10 is adapted to rise when fluid is introduced and descend when fluid is discharged. The suspension device 10 may include a first suspension device 10A and a second suspension device 10B. The first suspension device 10A may be connected between a first axle 300A and the vehicle body 100, and the second suspension device 10B may be connected between a second axle 300B and the vehicle body 100. Exemplarily, the fluid may be air, or it may be hydraulic oil, etc., and this application does not limit the specific type. For ease of description, this application uses air as an example.

[0049] Optionally, multiple first suspension devices 10A can be provided. For example, two first suspension devices 10A can be provided, with the two first suspension devices 10A connected to opposite sides of the first axle 300A and both connected to the vehicle body 100. Thus, when fluid is input to the two first suspension devices 10A, the portions of the two first suspension devices 10A connected to the vehicle body 100 rise, thereby raising the front portion of the vehicle body 100. When the fluid is discharged from the two first suspension devices 10A, the portions of the two first suspension devices 10A connected to the vehicle body 100 descend, thereby lowering the front portion of the vehicle body 100.

[0050] Multiple second suspension devices 10B can be provided. For example, two second suspension devices 10B can be provided, connected to opposite sides of the second axle 300B and both connected to the vehicle body 100. When fluid is introduced into the two second suspension devices 10B, the portions of the two second suspension devices 10B connected to the vehicle body 100 rise, thereby raising the rear portion of the vehicle body 100. When the fluid is discharged from the two second suspension devices 10B, the portions of the two second suspension devices 10B connected to the vehicle body 100 descend, thereby lowering the rear portion of the vehicle body 100.

[0051] It should be noted that the accumulator 20 can also be called an energy accumulator. The accumulator 20 can recover the fluid discharged from the suspension device 10 and input the fluid it stores into the suspension device 10. For example, when it is necessary to raise or lower the vehicle body 100, the accumulator 20 can quickly release the stored energy to provide power (pressure) to the suspension device 10, so that the vehicle body 100 can smoothly and quickly reach the required height.

[0052] The accumulator 20 includes a first accumulator 201 connected to the first suspension device 10A and a second accumulator 202 connected to the second suspension device 10B. The first accumulator 201 and the second accumulator 202 can be of the same or different types, and this application does not limit this. For example, the first accumulator 201 and the second accumulator 202 can be airbag-type accumulators, piston-type accumulators, or diaphragm-type accumulators, etc., and this application does not limit this.

[0053] It should be noted that the first accumulator 201 can be connected to both first suspension devices 10A. In this way, when the fluid in the two first suspension devices 10A flows into the first accumulator 201, the part of the two first suspension devices 10A connected to the vehicle body 100 rises. When the fluid in the first accumulator 201 flows into the two first suspension devices 10A, the part of the two first suspension devices 10A connected to the vehicle body 100 falls.

[0054] Similarly, the second accumulator 202 is connected to both second suspension devices 10B. Thus, when fluid flows into the second accumulator 202 from the two second suspension devices 10B, the portion of the two second suspension devices 10B connected to the vehicle body 100 rises. When fluid flows into the two second suspension devices 10B from the second accumulator 202, the portion of the two second suspension devices 10B connected to the vehicle body 100 falls.

[0055] In addition, the compressor 11 is connected to both the first suspension device 10A and the second suspension device 10B; the compressor 11 is responsible for compressing air and filling it into the suspension device 10 to increase the air pressure inside the suspension device 10, thereby raising the height of the vehicle body 100. For example, the compressor 11 can be a piston compressor, a rotary compressor, etc., and this application does not limit it to this.

[0056] Furthermore, valve 30 includes a first valve 301 disposed between compressor 11 and first suspension device 10A, and a second valve 302 disposed between compressor 11 and second suspension device 10B. That is, when the first valve 301 is open, compressor 11 is connected to the first suspension device 10A; when the first valve 301 is closed, compressor 11 is no longer connected to the first suspension device 10A. When the second valve 302 is open, compressor 11 is connected to the second suspension device 10B; when the second valve 302 is closed, compressor 11 is no longer connected to the second suspension device 10B.

[0057] The first valve 301 and the second valve 302 may be of the same type or different types, and this application does not limit this.

[0058] Optionally, the first valve 301 and the second valve 302 can be shut-off valves, which are suitable for shutting off fluid flow. For example, the shut-off valve can be a gate valve, globe valve, butterfly valve, etc.

[0059] Optionally, the first valve 301 and the second valve 302 may also be regulating valves, which can accurately regulate parameters such as fluid flow rate and pressure. For example, the regulating valve may be a throttle valve, etc., and this application does not limit it in this regard.

[0060] The suspension device 10 of this application embodiment is adapted to rise when fluid is filled in and fall when fluid is discharged. The accumulator 20 is capable of recovering the fluid discharged by the suspension device 10 and inputting the fluid stored therein into the suspension device 10. Therefore, when it is necessary to raise the vehicle body 100, the vehicle body 100 can be raised by allowing the fluid in the accumulator 20 to flow into the suspension device 10. When it is necessary to lower the height of the vehicle body 100, the height of the vehicle body 100 can be lowered by allowing the fluid in the suspension device 10 to flow into the suspension device 10.

[0061] Furthermore, since the suspension system 10 also includes a compressor 11 connected to both the first suspension system 10A and the second suspension system 10B, a first valve 301 disposed between the compressor 11 and the first suspension system 10A, and a second valve 302 disposed between the compressor 11 and the second suspension system 10B, the connection between the first suspension system 10A and the second suspension system 10B and the compressor 11 can be controlled by opening and closing the first valve 301 and the second valve 302. Thus, when the pressure difference between the accumulator 20 connected to either the first suspension system 10A or the second suspension system 10B is small, the compressor 11 can be activated to directly discharge the pressurized gas into either the first suspension system 10A or the second suspension system 10B. This improves the efficiency of the vehicle height adjustment, prevents a decrease in the vehicle height adjustment speed when the pressure difference between the accumulator 20 and the suspension system 10 is small, and improves the driving experience for passengers.

[0062] In some embodiments of this application, the compressor 11 includes an exhaust port 111. The suspension system 400 also includes a first flow channel 501 and a second flow channel 502, the first flow channel 501 being connected to the first suspension device 10A and the exhaust port 111, the second flow channel 502 being connected to the second suspension device 10B and the exhaust port 111, a first valve 301 being disposed in the first flow channel 501, and a second valve 302 being disposed in the second flow channel 502.

[0063] In one possible structural design, the suspension system 400 includes a first conduit and a second conduit, both of which have channels formed within them. The channel in the first conduit forms at least a portion of a first flow channel 501, and the channel in the second conduit forms at least a portion of a second flow channel 502. The first conduit has a first opening and a second opening communicating with the channels. The first opening can communicate with an exhaust port 111, and the second opening can communicate with a first suspension device 10A. The second conduit also has a third opening and a fourth opening communicating with the channels. The third opening can communicate with the exhaust port 111, and the fourth opening can communicate with a second suspension device 10B.

[0064] For example, the first and second pipes can be made of plastic, such as acrylonitrile butadiene styrene (ABS), high-impact polystyrene (HIPS), polycarbonate (PC), or polyethylene glycol terephthalate (PET). This allows the first and second pipes to be integrally molded using injection molding, improving production efficiency and reducing production costs.

[0065] For example, the first and second pipes can also be made of metal, such as stainless steel, aluminum alloy, or zinc-containing steel plate. This gives the first and second pipes a certain strength, reducing deformation when they collide with other objects and extending their service life.

[0066] In another possible structural design, the suspension system 400 includes a housing, within which a first channel and a second channel are formed, the first channel forming at least a portion of a first flow channel 501 and the second channel forming at least a portion of a second flow channel 502.

[0067] Since the first suspension device 10A and the second suspension device 10B are connected to the exhaust port 111 of the compressor 11 through their respective independent flow channels (i.e., the first flow channel 501 and the second flow channel 502), and each flow channel is equipped with a valve 30 (i.e., the first valve 301 and the second valve 302), the compressor 11 can selectively connect with the first suspension device 10A and / or the second suspension device 10B. Thus, by controlling the opening and closing of the first valve 301 and the second valve 302, the compressor 11 can selectively deliver compressed air to the first suspension device 10A via the first flow channel 501 or to the second suspension device 10B via the second flow channel 502 to meet the pressure requirements of the first suspension device 10A and the second suspension device 10B.

[0068] In some embodiments of this application, the first suspension device 10A includes: a first on / off valve 102 and a first air spring 101. The first on / off valve 102 is connected between the first flow channel 501 and the first air spring 101. The first air spring 101 is adapted to fill or discharge the fluid to make the first suspension device 10A rise or fall.

[0069] The air spring (i.e., the first air spring 101 and the second air spring 103) is a device that uses compressed air to support a load and provide shock absorption. The air spring includes an air bladder, which, for example, may be made of rubber. The height and stiffness of the air spring can be adjusted by changing the pressure of the air inside the air bladder. That is, filling or deflating the air spring can raise or lower its height.

[0070] Furthermore, a first on-off valve 102 is disposed between the first flow channel 501 and the first air spring 101, controlling the opening and closing of the first air spring 101 and the first flow channel 501. Closing the first on-off valve 102 maintains a fixed fluid pressure within the first air spring 101, allowing the first air spring 101 to maintain a fixed height. Opening the first on-off valve 102 connects the first air spring 101 to the first flow channel 501, allowing fluid to be introduced into or discharged from the first air spring 101. A second on-off valve 104 is disposed between the second flow channel 502 and the second air spring 103, controlling the opening and closing of the second air spring 103 and the second flow channel 502.

[0071] The first on / off valve 102 and the second on / off valve 104 may be of the same or different types, and this application does not limit this. For example, the first on / off valve 102 and the second on / off valve 104 may be gate valves, globe valves, butterfly valves, etc., and this application does not limit this.

[0072] Thus, by setting a first on / off valve 102 between the first flow channel 501 and the first air spring 101, and setting a second on / off valve 104 between the second flow channel 502 and the second air spring 103, the on / off state of the first air spring 101 and the first flow channel 501, and the on / off state of the second air spring 103 and the second flow channel 502 can be controlled by opening and closing the first on / off valve 102 and the second on / off valve 104. In this way, when it is not necessary to inflate the first air spring 101 and the second air spring 103, the first on / off valve 102 and the second on / off valve 104 can be closed, so that the internal spaces of the first air spring 101 and the second air spring 103 are kept independently, thereby ensuring that the pressure in the first air spring 101 and the second air spring 103 remains constant, thereby improving the stability of the suspension system 400.

[0073] In some embodiments of this application, the first flow channel 501 includes a first branch 601 with a first valve 301 and a first main flow channel 70 connected to the first branch 601 and the exhaust port 111. Additionally, the second flow channel 502 includes a second branch 602 connected to the first main flow channel 70, and the second valve 302 is disposed on the second branch 602; the second branch 602 and the first main flow channel 70 together constitute at least a portion of the second flow channel 502.

[0074] Since the first flow channel 501 includes the first branch road 601 and the first main flow road 70, and the second flow channel 502 includes the second branch road 602 and the first main flow road 70, that is, the first flow channel 501 and the second flow channel 502 share the first main flow road 70, the number of pipes in the suspension system 400 can be reduced, the overall volume of the suspension system 400 can be reduced, and the suspension system 400 can have better adaptability.

[0075] In some embodiments of this application, the suspension system 400 includes a first check valve 401 disposed on a first main flow path 70. The first check valve 401 is adapted for fluid to flow out from the exhaust port 111 and through the first main flow path 70. A check valve is a valve used to control fluid flow in only one direction, primarily to prevent backflow. That is, the first check valve 401 allows fluid flowing out of the exhaust port 111 of the compressor 11 to flow into the first flow channel 501, preventing fluid in the first flow channel 501 from flowing back to the exhaust port 111 of the compressor 11.

[0076] Optionally, the check valve 401 can be a spring-loaded check valve, a lift check valve, a swing check valve, a butterfly check valve, or a diaphragm check valve, etc., and this application does not limit it.

[0077] Since the first one-way valve 401 is located in the first main flow path 70, and the first one-way valve 401 is used to allow the fluid flowing out of the exhaust port 111 of the compressor 11 to flow into the first flow channel 501, the gas in the first flow channel 501 can be prevented from flowing back to the compressor 11, causing the compressor 11 to malfunction, thus improving the operational stability of the suspension system 400.

[0078] In some embodiments of this application, the suspension system 400 further includes a one-way throttle valve 12, disposed on the first main flow path 70 and connected in parallel with the first one-way valve 401. The one-way throttle valve 12 is adapted to allow the fluid flowing out of the exhaust port 111 to flow through the first main flow path 70. The one-way throttle valve 12 is a valve device that functions as both a one-way valve and a throttle valve. It is primarily used to control the flow rate of fluid in one direction while preventing reverse flow.

[0079] The suspension system 400 may further include an exhaust assembly 80 connected between the one-way throttle valve 12 and the exhaust port 111, and capable of communicating with the first main flow path 70. The exhaust assembly 80 may include an exhaust flow path 801 and a third valve 303. The exhaust flow path 801 is connected to the first main flow path 70 and has an exhaust port 14. The third valve 303 is disposed on the exhaust flow path 801 and is located between the first main flow path 70 and the exhaust port 14. The description of the third valve 303 is similar to that of the first valve 301 described above, and will not be repeated here.

[0080] In one possible structural design, the exhaust flow path 801 is a pipe with a channel inside, and a first opening and a second opening communicating with the channel. The first opening can communicate with the first main flow path 70, and the second opening is connected to the atmospheric environment. In another possible structural design, the exhaust flow path 801 can also be a channel provided inside the housing. This application will not elaborate on these options further, but please refer to the description of the first flow channel 501 and the second flow channel 502 above.

[0081] Thus, when the fluid (i.e. air) pressure inside the suspension device 10 is too high and the fluid needs to be discharged, the fluid inside the suspension device 10 can flow to the exhaust assembly 80 through the one-way throttle valve 12 and be discharged into the atmosphere through the exhaust port 14 of the exhaust assembly 80. This can prevent the internal pressure of the suspension system 400 from being too high, which could lead to damage to components (such as valve 30 and compressor 11) and improve the service life of the suspension system 400.

[0082] In some embodiments of this application, the suspension system 400 further includes a third flow channel 503 and a fourth flow channel 504. The third flow channel 503 connects the first accumulator 201 and the first suspension device 10A; the fourth flow channel 504 connects the second accumulator 202 and the second suspension device 10B. The specific structures of the third flow channel 503 and the fourth flow channel 504 can be referred to the description of the first flow channel 501 above, and will not be repeated here. Thus, the first accumulator 201 and the first suspension device 10A can be connected through the third flow channel 503, and the second accumulator 202 and the second suspension device 10B can be connected through the fourth flow channel 504.

[0083] In some embodiments of this application, valve 30 further includes a fourth valve 304 and a fifth valve 305. The fourth valve 304 is disposed in the third flow channel 503 and is adapted to connect or block the first accumulator 201 and the first suspension device 10A. The fifth valve 305 is disposed in the fourth flow channel 504 and is adapted to connect or block the second accumulator 202 and the second suspension device 10B.

[0084] The types of the fourth valve 304 and the fifth valve 305 can be referred to the description of the first valve 301 and the second valve 302 above, and this application does not limit them.

[0085] Since valve 30 includes a fourth valve 304 disposed in the third flow channel 503 and a fifth valve 305 disposed in the fourth flow channel 504, the connection between the accumulator 20 (i.e., the first accumulator 201 and the second accumulator 202) and the suspension device 10 (i.e., the first suspension device 10A and the second suspension device 10B) can be controlled by opening and closing the fourth valve 304 and the fifth valve 305. Thus, when the vehicle body 100 needs to be raised, the fourth valve 304 and the fifth valve 305 can be opened to allow fluid in the accumulator 20 to flow into the suspension device 10, thereby raising the suspension device 10. Conversely, when the vehicle body 100 needs to be lowered, the fourth valve 304 and the fifth valve 305 can be opened to allow fluid in the suspension device 10 to flow into the accumulator 20, thereby lowering the suspension device 10.

[0086] In some embodiments of this application, the third flow channel 503 is connected to the first branch 601, and the fourth flow channel 504 is connected to the second branch 602. In this way, the first branch 601 and the third flow channel 503 can share part of the pipeline, which helps to reduce the length of the pipeline in the suspension system 400 and facilitates the miniaturization of the suspension system 400.

[0087] In some embodiments of this application, the suspension system 400 further includes a fifth flow channel 505, a sixth valve 306, and a seventh valve 307. The fifth flow channel 505 is connected between the first accumulator 201 and the first main flow path 70. The sixth valve 306 is disposed on the fifth flow channel 505. The seventh valve 307 is disposed on the first main flow path 70. The connection position between the first accumulator 201 and the first main flow path 70 is located between the seventh valve 307 and the first check valve 401.

[0088] The fifth flow channel 505 can be described with reference to the first flow channel 501 and the second flow channel 502 described above, and will not be repeated here. Similarly, the sixth valve 306 and the seventh valve 307 can be described with reference to the first valve 301 and the second valve 302 described above, and will not be repeated here.

[0089] Since the fifth flow channel 505 is connected between the first accumulator 201 and the first main flow path; the sixth valve 306 is located on the fifth flow channel 505; and the seventh valve 307 is located on the first main flow path, when the first accumulator 201 needs to be replenished with gas, the seventh valve 307 is closed, and the gas flowing out of the compressor 11 exhaust port can flow to the first accumulator 201 in sequence through the first one-way valve 401 and the sixth valve 306, thereby replenishing the first accumulator 201 with gas.

[0090] In some embodiments of this application, the compressor 11 includes an intake port 112, and the suspension system 400 further includes a sixth flow channel 506 and an eighth valve 308. The sixth flow channel 506 is connected between the second accumulator 202 and the intake port 112; the eighth valve 308 is disposed on the sixth flow channel 506.

[0091] Thus, when the pressure difference between the second accumulator 202 and the first suspension device 10A is small, the eighth valve 308 can be opened to allow the fluid in the second accumulator 202 to flow through the eighth valve 308 to the intake port 112 of the compressor 11. After being pressurized by the compressor 11, the gas flows sequentially through the first one-way valve 401, the seventh valve 307, the first valve 301, and the second on / off valve 104 to the second suspension device 10B, thereby lifting the vehicle body 100 using the second suspension device 10B. Since the air pressure inside the second accumulator 202 is greater than the external gas pressure, the lifting speed of the second suspension device 10B can be further increased, thereby improving the user experience.

[0092] In some embodiments of this application, the compressor 11 includes an air inlet 113; the suspension system 400 also includes an air intake assembly 90, which is connected to the air intake 112 and communicates with the air inlet 113.

[0093] The suction assembly 90 includes a suction flow path 901 and a second one-way valve 402. The suction flow path is connected to the suction port 112 and has a suction hole 15. The second one-way valve 402 is disposed on the suction flow path 901 and is located between the suction port 112 and the suction hole 15. The second one-way valve 402 is adapted to allow external gas to flow into the suction port 112 and / or the replenishment port 113.

[0094] Thus, by drawing in outside air into the compressor 11's intake port 113, the pressure distribution and gas state inside the compressor 11 can be improved, reducing energy loss during compression, lowering the compressor 11's power consumption, and achieving energy-saving operation. Furthermore, the intake assembly 90, connected to the intake port 112, provides a stable intake channel for the compressor 11. That is, the intake assembly 90 can effectively guide outside air to the compressor 11's intake port 112, ensuring the continuity of the intake process and preventing interruptions or instability in intake due to poor airflow or external interference, thereby maintaining the normal operation of the compressor 11 and ensuring the stability of gas circulation in the suspension system 400.

[0095] In some embodiments of this application, the suspension system 400 further includes a seventh flow channel 507 and a ninth valve 309. The seventh flow channel 507 is connected between the intake port 112 and the first main flow path 70, and the connection point between the seventh flow channel 507 and the first main flow path 70 is located between the seventh valve 307 and the first branch path 601. The ninth valve 309 is disposed on the seventh flow channel 507. The specific structure of the seventh flow channel 507 can be referred to the description of the first flow channel 501 above, and will not be repeated here. Thus, the first suspension device 10A can be connected to the intake port 112 of the compressor 11 through the first main flow path 70 and the seventh flow channel 507.

[0096] In some embodiments of this application, valve 30 further includes a ninth valve 309, which is disposed in the seventh flow channel 507 and is adapted to connect or block the first main flow path 70 and the compressor 11 intake port 112. The description of the ninth valve 309 is similar to that of the first valve 301 described above, and will not be repeated here.

[0097] In this way, the fluid in the second accumulator 202 flows through the sixth flow channel 506 through the opened eighth valve 308, and then enters the suction port 112 of the compressor 11. After being compressed by the compressor 11, it is output from the exhaust port 111 and flows sequentially through the first main flow path 70, the first one-way valve 401, the seventh valve 307, the second valve 302, and into the second suspension device 10B, providing fluid input for the lifting of the suspension device 10.

[0098] In some embodiments of this application, the suspension system 400 further includes a power limiting valve 16, which includes a first port 161, a second port 162 and a third port 163. The first port 161 is connected to the exhaust port 111, the second port 162 is connected to the intake port 112, and the third port 163 is adapted to communicate with the outside air.

[0099] Because the first port 161 of the power limiting valve 16 is connected to the exhaust port 111, the second port 162 is connected to the intake port 112, and the third port 163 is connected to the outside air, a pressure regulation channel can be established between the exhaust side, the intake side, and the external environment of the compressor 11. When the exhaust pressure is too high, some gas can flow from the exhaust port 111 to the intake port 112 or the outside air through the power limiting valve 16, thereby reducing the exhaust pressure; conversely, when the intake pressure is too low, air can be introduced from the outside or the gas on the exhaust side can be used to increase the intake pressure, thereby achieving dynamic pressure balance within the system and ensuring stable operation of the suspension system 400.

[0100] In some embodiments of this application, the third port 163 is connected to the suction port 15. This eliminates the need for an additional power limiting valve suction port, reducing production steps and lowering production costs.

[0101] In some embodiments of this application, the suspension system 400 includes a pressure detection device 17 connected to the first main flow path 70, adapted to detect the pressure value of the first main flow path 70.

[0102] The pressure detection device 17 can be a pneumatic pressure detection device, a hydraulic pressure detection device, etc., and this application does not limit it.

[0103] In this way, the pressure detection device 17 can acquire the pressure value in the first main road 70 in real time. Therefore, whether the vehicle is in motion or stationary, the pressure can be accurately measured, providing accurate data support for subsequent adjustments and control.

[0104] In some embodiments of this application, the suspension system 400 further includes a drying unit 13, which is disposed in the first main flow path 70 and located between the first one-way valve 401 and the exhaust port 111 of the compressor 11. The drying unit 13 is mainly used to remove moisture and impurities from the compressed air to protect the components of the suspension system 400 and ensure its normal operation.

[0105] For example, the drying unit 13 can be an adsorption drying unit, which uses the adsorption properties of adsorbents (such as silica gel, activated alumina, molecular sieves, etc.) to remove moisture from compressed air. For example, the drying power supply can also be a refrigeration drying unit, which is based on the principle of cooling and dehumidifying compressed air. The compressed air is cooled to a certain temperature by a refrigeration system, causing the water vapor in it to condense into water droplets, and then the water droplets are separated by a separator, thereby achieving the purpose of drying the air.

[0106] Since the compressed air discharged by the compressor 11 usually contains moisture and impurities, the drying unit 13 is located between the first one-way valve 401 and the exhaust port of the compressor 11 to dry and filter the air in a timely manner, preventing moisture and impurities from entering subsequent pipelines, valves, air springs and other components, reducing the risk of corrosion, wear and blockage, and extending the service life of these components.

[0107] Based on the suspension system 400 described above, the suspension system 400 provided in this application embodiment can at least achieve the following adjustment functions.

[0108] When the gas pressure in the first accumulator 201 is sufficiently greater than the gas pressure in the first suspension device 10A and the gas pressure in the second accumulator 202 is sufficiently greater than the gas pressure in the second suspension device 10B, the gas in the first accumulator 201 can flow through the fourth valve 304 into the first suspension device 10A, thereby raising the height of the first axle 400S of the vehicle body. The gas in the second accumulator 202 can flow through the fifth valve 305 into the second suspension device 10B, thereby raising the height of the second axle 400B of the vehicle body. This allows for individual adjustment of each suspension device 10.

[0109] To achieve continuous synchronous lifting of the first axle 300A and the second axle 300B, the gas pressure in the first accumulator 201 only needs to be sufficiently greater than that in the first suspension device 10A, while the gas pressure in the second accumulator 202 needs to be less than that in the second suspension device 10B.

[0110] The gas in 201 can pass through the fourth valve 304 to the first suspension device 10A, thereby achieving the vehicle body

[0111] The height of the first axle 300A increases. Gas in the second accumulator 202 flows through the sixth channel 506, passes through the eighth valve 308, and reaches the suction port of the compressor 11. After being compressed and pressurized by the compressor 11, it passes through the drying unit 13 and the first one-way valve 401, then through the seventh valve 307, and finally through the second valve 302 to reach the second suspension device 10B, thus raising the height of the second axle 400B of the vehicle body 100. This allows the first axle 300A and the second axle 400B to rise synchronously. Then, when descent is required, since the fluid pressure in the first accumulator 201 is already relatively low, and some of the gas is pumped to the second suspension device 10B by the compressor 11 during lifting, its gas pressure is even lower. This results in a greater pressure difference between the second suspension device 10B and the compressor 11. At this point, simply opening the fifth valve 305 allows the pressure difference to be used to backflow the fluid from the second suspension device 10B into the second accumulator 202, thus adjusting the height of the second suspension device 10B. Meanwhile, the first accumulator 201, which is lifted using the pressure difference, experiences a lowering effect during lifting. Subsequently, the pressure difference between the first suspension device 10A and the second suspension device 10A will decrease, failing to meet the need for pressure difference adjustment. At this point, simply opening the first valve 301 allows the fluid in the first suspension device 10A to flow into the first main flow path 70 and the seventh flow channel 507, then through the ninth valve 309 to the compressor 11. The compressor 11 then pumps the fluid to the drying unit 13 and the first one-way valve 401, through the fifth flow channel 505, and then through the sixth valve 30, finally pumping it into the first accumulator 201, thus achieving the height adjustment of the first suspension device 10A. Through the above method, continuous synchronous lifting and lowering adjustment of the first axle 300A and the second axle 400B can be achieved.

[0112] When the accumulator 20 is replenished with air from the atmosphere, the compressor 11 draws air from the suction port 15, passes through the suction flow path 901 into the compressor 11, and after compression, it reaches the drying unit 13 and the first one-way valve 401. At this time, it can reach the first accumulator 201 through the fifth flow path 505 and the sixth valve 306, or through the seventh valve 307, the first main flow path 70, the second valve 302, and the fifth valve 305 to reach the second accumulator 202. In this way, fluid can be replenished to the second accumulator 202 and the first accumulator 201 individually or simultaneously.

[0113] When fluid is supplied to the suspension device 10 from the atmosphere, the compressor 11 draws air from the intake port 15, passes through the intake airflow path 901 into the compressor 11, compresses it, and then passes through the drying unit 13 and the first one-way valve 401. From there, it passes through the seventh valve 307 to the first main flow path 70. At this point, the fluid can reach the first suspension device 10A through the first valve 301, and the first air spring 101 can be inflated by controlling the opening and closing of the first on / off valve 102. Alternatively, the fluid can reach the second suspension device 10B through the second valve 302, and the second air spring 103 can be inflated by controlling the opening and closing of the second on / off valve 104. This method allows for individual or simultaneous air supply to the first suspension device 10A and the second suspension device 10B.

[0114] When it is necessary to discharge compressed fluid from the suspension device 10 to the atmosphere, the compressed fluid in the first suspension device 10A or the second suspension device 10B arrives at the first main flow path 70 via the first valve 301 or the second valve 302, undergoes desiccant backflushing and regeneration in the drying unit 13 via the seventh valve 307 and the one-way throttle valve 12, and then arrives at the exhaust flow path 801, and is discharged into the atmosphere via the third valve 303 and the exhaust port 14.

[0115] When compressed fluid needs to be discharged from the accumulator 20 to the outside atmosphere, the compressed fluid in the first accumulator 201 flows through the sixth valve 306 to the fifth flow channel 505, then through the one-way throttle valve 12 to the drying unit 13 for desiccant backflushing and regeneration, and finally to the exhaust flow path 801, and then through the third valve 303 and exhaust port 14 to be discharged into the atmosphere. The fluid in the second accumulator 202 flows through the fifth valve 305 and the second valve 302 to the first main flow path 70, then through the seventh valve 307, and then through the one-way throttle valve 12 to the drying unit 13 for desiccant backflushing and regeneration, and finally through the exhaust flow path 801, the third valve 303 and exhaust port 14 to be discharged into the atmosphere.

[0116] It should be noted that the structure of the above-mentioned valve 30 (i.e., the first valve 301, the second valve 302, the third valve 303, the first on / off valve 102, etc.) can be a two-position valve, a three-position valve, or a four-position valve, etc., and this application does not limit it.

[0117] In understanding the scope of this utility model, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the described features, elements, components, groups, integrals, and / or steps, but do not exclude the presence of other undescribed features, elements, components, groups, integrals, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0118] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0119] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0120] The utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that the utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the utility model, all of which fall within the scope of protection claimed by the utility model.

Claims

1. A suspension system, characterized in that, include: The suspension device (10) is adapted to rise when fluid is introduced and to fall when fluid is discharged. The suspension device (10) includes: a first suspension device (10A) and a second suspension device (10B); The accumulator (20) is capable of recovering fluid discharged from the suspension device (10) and inputting the fluid stored therein into the suspension device (10); the accumulator (20) includes: a first accumulator (201) connected to the first suspension device (10A) and a second accumulator (202) connected to the second suspension device (10B); The compressor (11) is connected to both the first suspension device (10A) and the second suspension device (10B); The valve (30) includes a first valve (301) disposed between the compressor (11) and the first suspension device (10A) and a second valve (302) disposed between the compressor (11) and the second suspension device (10B).

2. The suspension system according to claim 1, characterized in that, The compressor (11) includes an exhaust port (111); the suspension system further includes a first flow channel (501) and a second flow channel (502), the first flow channel (501) is connected to the first suspension device (10A) and the exhaust port (111), the second flow channel (502) is connected to the second suspension device (10B) and the exhaust port (111), the first valve (301) is disposed in the first flow channel (501), and the second valve (302) is disposed in the second flow channel (502).

3. The suspension system according to claim 2, characterized in that, The first suspension device (10A) includes: a first on / off valve (102) and a first air spring (101), the first on / off valve (102) being connected between the first flow channel (501) and the first air spring (101), and the first air spring (101) being adapted to fill or discharge the fluid to cause the first suspension device (10A) to rise or fall; The second suspension device (10B) includes a second on / off valve (104) and a second air spring (103), the second on / off valve (104) being connected between the second flow channel (502) and the second air spring (103), and the second air spring (103) being adapted to fill or discharge the fluid to raise or lower the second suspension device (10B).

4. The suspension system according to claim 2 or 3, characterized in that, The first flow channel (501) includes a first branch (601) provided with a first valve (301) and a first main flow channel (70) connected to the first branch (601) and the exhaust port (111); The second flow channel (502) includes a second branch (602) connected to the first main flow channel (70), and the second valve (302) is disposed on the second branch (602); the second branch (602) and the first main flow channel (70) together constitute at least a portion of the second flow channel (502).

5. The suspension system according to claim 4, characterized in that, Includes a first check valve (401) disposed on the first main flow path (70), the first check valve (401) being adapted for fluid to flow out from the exhaust port (111) and through the first main flow path (70).

6. The suspension system according to claim 5, characterized in that, It also includes a one-way throttle valve (12), which is disposed on the first main flow path (70) and is disposed in parallel with the first one-way valve (401). The one-way throttle valve (12) is adapted to allow the fluid flowing out of the exhaust port (111) to flow through the first main flow path (70).

7. The suspension system according to claim 6, characterized in that, It also includes an exhaust assembly (80) connected between the one-way throttle valve (12) and the exhaust port (111), and is capable of communicating with the first main flow path (70).

8. The suspension system according to claim 7, characterized in that, The exhaust assembly (80) includes: An exhaust flow path (801) is connected to the first main flow path (70), and an exhaust hole (14) is provided on the exhaust flow path (801); The third valve (303) is disposed on the exhaust flow path (801) and located between the first main flow path (70) and the exhaust port (14).

9. The suspension system according to claim 4, characterized in that, The suspension system further includes a third flow channel (503) and a fourth flow channel (504), wherein the third flow channel (503) is connected between the first accumulator (201) and the first suspension device (10A); and the fourth flow channel (504) is connected between the second accumulator (202) and the second suspension device (10B).

10. The suspension system according to claim 9, characterized in that, The valve (30) further includes a fourth valve (304) and a fifth valve (305). The fourth valve (304) is disposed in the third flow channel (503) and is adapted to connect or block the first accumulator (201) and the first suspension device (10A). The fifth valve (305) is disposed in the fourth flow channel (504) and is adapted to connect or block the second accumulator (202) and the second suspension device (10B).

11. The suspension system according to claim 9, characterized in that, The third flow channel (503) is connected to the first branch (601), and the fourth flow channel (504) is connected to the second branch (602).

12. The suspension system according to claim 5, characterized in that, Also includes: The fifth flow channel (505) is connected between the first accumulator (201) and the first main flow path (70); The sixth valve (306) is disposed on the fifth flow channel (505); The seventh valve (307) is located in the first main flow path (70), and the connection between the first accumulator (201) and the first main flow path (70) is located between the seventh valve (307) and the first check valve (401).

13. The suspension system according to claim 12, characterized in that, The compressor (11) includes an intake port (112), and the suspension system further includes: The sixth flow channel (506) is connected between the second accumulator (202) and the air intake (112); The eighth valve (308) is located on the sixth flow channel (506).

14. The suspension system according to claim 13, characterized in that, The compressor (11) includes an air inlet (113); the suspension system also includes an air intake assembly (90), which is connected to the air intake (112) and communicates with the air inlet (113).

15. The suspension system according to claim 14, characterized in that, The air intake assembly (90) includes: an air intake path (901) connected to the air intake port (112), and an air intake hole (15) is provided on the air intake path (901); A second one-way valve (402) is disposed on the air intake path (901) and located between the air intake port (112) and the air intake hole (15). The second one-way valve (402) is adapted to allow external gas to flow into the air intake port (112) and / or the air replenishment port (113).

16. The suspension system according to claim 13, characterized in that, Also includes: The seventh flow channel (507) is connected between the air intake (112) and the first main flow path (70), and the connection between the seventh flow channel (507) and the first main flow path (70) is located between the seventh valve (307) and the first branch (601). The ninth valve (309) is located on the seventh flow channel (507).

17. The suspension system according to claim 14, characterized in that, It also includes a power limiting valve (16), which includes a first port (161), a second port (162) and a third port (163). The first port (161) is connected to the exhaust port (111), the second port (162) is connected to the intake port (112), and the third port (163) is adapted to be connected to the outside air.

18. The suspension system according to claim 17, characterized in that, The air intake assembly (90) includes: an air intake path (901) connected to the air intake port (112), and an air intake hole (15) provided on the air intake path (901); the third port (163) is connected to the air intake hole (15).

19. The suspension system according to claim 4, characterized in that, It also includes a pressure detection device (17) connected to the first main flow path (70) and adapted to detect the pressure value of the first main flow path (70).

20. A vehicle (1000), characterized in that, Includes the suspension system as described in any one of claims 1-19.

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