Air suspension device, automobile, and vehicle body stability control method

Abstract

The present application relates to the field of compressor, in particular to an air suspension device, a car and a body stability control method, comprising: a mounting seat, having a cavity, the cavity has an air inlet hole and an air outlet hole; an air bag, connected and arranged above the mounting seat, the air outlet hole is communicated with the air bag; a compressor, arranged in the cavity, the air inlet of the compressor is communicated with the air inlet hole, and the air outlet of the compressor is communicated with the cavity, so as to achieve the purpose of simplifying the overall structure of the air suspension.

Description

Technical Field

[0001] This invention relates to the field of compressors, and more specifically to an air suspension device, a vehicle, and a vehicle stability control method. Background Technology

[0002] As people's living standards improve, they place increasing emphasis on the smoothness of car driving, the comfort of passengers, and the stability of handling. Electronically controlled air suspension systems can improve vehicle comfort and handling stability, and reduce vehicle damage to the road surface.

[0003] Traditional electronically controlled air suspension consists of an air compressor, air tank, airbags, solenoid valves, a height sensor, an electronic control unit (ECU), pressure sensors, and air circuits and wiring harnesses. The entire system compresses air and stores it in the air tank. The height sensor collects the vehicle height, and the ECU controls the solenoid valves to inflate and deflate the airbags. The system has many components; the air compressor and air tank occupy a significant amount of space and weight; the air circuits are complex and the loops are too long; there are delays in the control process; and air leaks are common.

[0004] There is currently no good solution for simplifying the overall structure of air suspension. Summary of the Invention

[0005] To simplify the overall structure of the air suspension, an air suspension device and a vehicle body stability control method are proposed.

[0006] This invention provides an air suspension device, comprising:

[0007] The mounting base has a cavity having an air inlet and an air outlet;

[0008] An airbag is connected and disposed above the mounting base, and the air outlet communicates with the airbag.

[0009] A compressor is disposed within the cavity, wherein the compressor's intake port is connected to the air inlet, and the compressor's exhaust port is connected to the cavity.

[0010] Preferably, the mounting base is provided with a first partition, which divides the cavity into a first cavity 401 and a second cavity 402;

[0011] The first partition plate is provided with a through hole connecting the first cavity and the second cavity. The compressor is disposed in the first cavity. The exhaust port is connected to the first cavity, and the air outlet is connected to the second cavity. The mounting base is also provided with a vent hole connected to the second cavity.

[0012] Preferably, a flow path switching controller is provided in the first cavity, which can control the opening and closing of the through hole, the air outlet, and the vent.

[0013] Preferably, a second partition is provided in the first cavity, and the second partition and the end face where the exhaust port of the compressor is located divide the first cavity into an energy storage cavity and a receiving cavity. The air inlet is connected to the receiving cavity, the compressor is disposed in the receiving cavity, the air intake of the compressor is connected to the receiving cavity, and a filter device is provided in the receiving cavity, and the filter device is disposed between the air inlet and the air intake.

[0014] Preferably, the mounting base includes a base body and a removable base plate mounted on the bottom of the base body.

[0015] Preferably, the detachable base plate is provided with a wire passage groove, which connects the first cavity and the receiving cavity and leads to the outside of the mounting base.

[0016] The present invention also provides an automobile, including a control module and the aforementioned air suspension device.

[0017] Preferably, the number of air suspension devices is four; the control module includes a front left height sensor, a front right height sensor, a rear left height sensor, and a rear right height sensor for detecting the height of different parts of the vehicle body; each air suspension device corresponds one-to-one with each sensor.

[0018] The present invention also provides a vehicle stability control method for the aforementioned automobile; the vehicle stability control method comprises: acquiring the real-time vehicle height h, comparing the real-time height h with a preset height h0, and adjusting the opening and closing of the compressor, the through hole, the air outlet and the vent hole according to the comparison result between the real-time height h and the preset height h0.

[0019] Preferably, the vehicle stability control method includes multiple control modes, the multiple control modes including:

[0020] When |h-h0|<ΔH1, mode one is executed, which means: the compressor is closed, the through hole is closed, the air outlet is closed, and the vent is closed; h0 is a preset height, and ΔH is a preset height difference;

[0021] When |h-h0|≥ΔH1 and h-h0>0, mode two is executed, wherein the compressor is closed, the through hole is closed, the air outlet is open, and the vent is open;

[0022] When |h-h0|≥ΔH1 and h-h0<0, mode three is executed, which means: the compressor is closed, the through hole is open, the air outlet is open, and the vent is closed.

[0023] When |h-h0|≥ΔH1 and h0-h>ΔH2, mode four is executed, which means that the compressor is turned on, the through hole is turned on, the air outlet is turned on, and the vent is turned off.

[0024] This invention integrates a compressor within a mounting base, creating a high-pressure chamber within the base. Gas discharged from the compressor is initially stored within this chamber. When the air bladder needs inflation, the gas from the chamber enters the air bladder through the outlet. Compared to existing technologies, this invention eliminates the need for a separate gas storage tank. It cleverly utilizes the mounting base, using its internal cavity as the gas storage tank, and integrates the compressor within the base. This results in a smaller, more compact air suspension device; furthermore, the elimination of piping reduces pressure loss. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0027] Figure 1 This is a schematic diagram of the airbag and mounting base according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the mounting base according to an embodiment of the present invention;

[0029] Figure 3 This is a flowchart illustrating the vehicle body height adjustment process according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram showing the distribution of the air suspension device in an embodiment of the present invention.

[0031] The reference numerals in the attached figures are as follows:

[0032] 1. Mounting base; 101. Base body; 102. Base plate; 1101. Air inlet; 1102. Air outlet; 1103. Vent hole; 1021. Cable tray; 2. Airbag; 3. Compressor; 301. Inlet; 302. Outlet; 4. Cavity; 401. First cavity; 402. Second cavity; 4011. Energy storage cavity; 4012. Receiving cavity; 501. First partition; 502. Second partition; 5011. Through hole; 6. Wiring terminal; 7. Control valve assembly; 8. Motor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0035] Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof; the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that an article or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or system that includes said element.

[0036] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components, and does not imply any sequential order; unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0041] This invention relates to the field of compressors, and more specifically to an air suspension device, a vehicle, and a vehicle stability control method.

[0042] As people's living standards improve, they place increasing emphasis on the smoothness of car driving, the comfort of passengers, and the stability of handling. Electronically controlled air suspension systems can improve vehicle comfort and handling stability, and reduce vehicle damage to the road surface.

[0043] Traditional electronically controlled air suspension consists of an air compressor, air tank, airbags, solenoid valves, a height sensor, an electronic control unit (ECU), pressure sensors, and air circuits and wiring harnesses. The entire system compresses air and stores it in the air tank. The height sensor collects the vehicle height, and the ECU controls the solenoid valves to inflate and deflate the airbags. The system has many components; the air compressor and air tank occupy a significant amount of space and weight; the air circuits are complex and the loops are too long; there are delays in the control process; and air leaks are common.

[0044] To simplify the overall structure of the air suspension, an air suspension device and a vehicle body stabilization air suspension device are proposed, such as... Figure 1-4 As shown, it includes:

[0045] Mounting base 1 has a cavity 4, the cavity 4 having an air inlet 1101 and an air outlet 1102;

[0046] Airbag 2 is connected and disposed above the mounting base 1, and the air outlet 1102 is connected to the airbag 2;

[0047] The compressor 3 is disposed inside the cavity 4. The air intake 301 of the compressor 3 is connected to the air inlet 1101, and the air outlet 302 of the compressor 3 is connected to the cavity 4.

[0048] The compressor 3 is an air compressor that directly discharges high-pressure gas into the cavity 4, where the high-pressure gas is stored. When the airbag 2 needs to be inflated, the cavity 4 inflates the airbag 2 through the air outlet 1102. Compared with the existing technology that sets the compressor 3 and the air tank outside the mounting base and connects the airbag 2, the air tank, and the compressor 3 through pipelines, this application, on the one hand, eliminates the connecting pipelines, resulting in a simpler and more stable structure, eliminating pressure loss caused by pipelines and subsequent maintenance; on the other hand, by designing the mounting base 1 as a structure with a cavity 4 capable of storing high-pressure gas, with the mounting base 1 serving as a traditional air tank and the compressor 3 located inside the cavity 4, the overall space occupied by the air suspension device is reduced, the overall structure is more compact, and it is easier to develop miniaturization.

[0049] Compressor 3 can be a twin-screw compressor 3.

[0050] Preferred, such as Figure 1-2 As shown, a first partition 501 is provided inside the mounting base 1, which divides the cavity 4 into a first cavity 401 and a second cavity 402.

[0051] The first partition 501 is provided with a through hole 5011 connecting the first cavity 401 and the second cavity 402. The compressor 3 is disposed in the first cavity 401. The exhaust port 302 is connected to the first cavity 401, and the air outlet 1102 is connected to the second cavity 402. The mounting base 1 is also provided with a vent hole 1103 connected to the second cavity 402.

[0052] The compressor 3 is placed in the first chamber 401. The high-pressure gas discharged by the compressor 3 is directly discharged into the first chamber 401. The first chamber 401 serves as a high-pressure chamber for storing the gas discharged by the compressor. The air outlet 1102, through hole 5011, and vent hole 1103, which connect the first chamber 401 and the second chamber 402, work together to inflate and deflate the airbag 2. The structure is simple, requires no additional pipes for connection, is easy to maintain, and avoids pressure loss. When the air outlet 1102 and through hole 5011 are open and the vent hole 1103 is closed, the airbag 2 is inflated. When the air outlet 1102 and vent hole 1103 are open and through hole 5011 is closed, the airbag 2 is deflated.

[0053] Preferred, such as Figure 2 As shown, a flow path switching controller is provided in the first cavity 401. The flow path switching controller can control the opening and closing of the through hole 5011, the air outlet 1102, and the vent 1103.

[0054] The flow path switching controller can be configured as a control valve assembly 7. By setting the control valve assembly 7 within the second chamber 402 to control the opening and closing of the through hole 5011, the air outlet 1102, and the vent hole 1103, it helps maintain the sealing of the first chamber 401, improves the stability of the pressure within the first chamber 401, and facilitates rapid inflation of the airbag 2. The control valve assembly 7 can be a two-position three-way valve, or it can include two separate valves. Of the two separate valves, one is used to control the connection between the air outlet 1102 and the through hole 5011, and the other is used to control the connection between the air outlet 1102 and the vent hole 1103. When the air outlet 1102 is disconnected from the through hole 5011, it is equivalent to both the air outlet 1102 and the through hole 5011 being closed simultaneously; similarly, when the air outlet 1102 is disconnected from the vent hole 1103, it is equivalent to both the air outlet 1102 and the vent hole 1103 being closed simultaneously. The control valve group 7 can also be equipped with three shut-off valves, one shut-off valve at each of the through hole 5011, the air outlet 1102 and the vent 1103, thereby controlling the opening and closing of the through hole 5011, the air outlet 1102 and the vent 1103.

[0055] Preferred, such as Figure 1 As shown, a second partition 502 is provided in the first cavity 401. The second partition 502 and the end face where the exhaust port 302 of the compressor 3 is located divide the first cavity 401 into an energy storage cavity 4011 and a receiving cavity 4012. The air inlet 1101 is connected to the receiving cavity 4012. The compressor 3 is located in the receiving cavity 4012. The air intake 301 of the compressor 3 is connected to the receiving cavity 4012. A filter device is provided in the receiving cavity 4012. The filter device is located between the air inlet 1101 and the air intake 301.

[0056] Air enters the receiving cavity 4012 through the air inlet 1101, and then enters the air intake 301 of the compressor 3 after being filtered by the filter device, thus improving the cleanliness of the air. The filter device is also installed in the mounting base 1, further reducing the space occupied by the air suspension device. The end face where the second partition 502 and the exhaust port 302 of the compressor 3 are located divides the first cavity 401 into the energy storage cavity 4011 and the receiving cavity 4012, which is conducive to further improving the sealing performance of the energy storage cavity 4011. "The end face where the second partition 502 and the exhaust port 302 of the compressor 3 are located divides the first cavity 401 into the energy storage cavity 4011 and the receiving cavity 4012" means that the end face where the exhaust port 302 of the compressor 3 is located acts as a separator, together with the second partition 502, dividing the first cavity 401 into two cavities. Moreover, the high-pressure gas discharged by the compressor 3 can directly enter the energy storage cavity 4011 without the need for a pipe.

[0057] Preferred, such as Figure 2 As shown, the mounting base 1 includes a base body 101 and a detachable base plate 102 mounted on the bottom of the base body 101.

[0058] Mounting base 1 is divided into two parts, which facilitates the installation of components within mounting base 1; the removable base plate 102 facilitates later maintenance. The removable base plate 102 can be fixed by bolts and seals.

[0059] Preferred, such as Figure 2 As shown, the detachable base plate 102 is provided with a wire passage groove 1021, which connects the first cavity 401, the receiving cavity 4012 and leads to the outside of the mounting base 1.

[0060] By mounting the cable tray 1021 on the base plate 102, power and signal cables for connecting the control valve assembly 7 and the compressor 3 can be installed within the cable tray 1021. Since the base plate 102 is a detachable structure, it is more convenient and easier to install and route power and signal cables. Terminal blocks 6 are installed outside the mounting base 1. The power and signal cables are first connected to the terminal blocks 6, and then connected to the power supply and control signal source through the terminal blocks 6.

[0061] The present invention also provides an automobile, including a control module and the aforementioned air suspension device.

[0062] The car ran smoothly.

[0063] Preferred, such as Figure 4 As shown, there are four air suspension devices; the control module includes a front left height sensor, a front right height sensor, a rear left height sensor, and a rear right height sensor for detecting the height of different parts of the vehicle body; each air suspension device corresponds one-to-one with each sensor.

[0064] "Front left," "Front right," "Rear left," and "Rear right" are descriptions based on the commonly used names for vehicle positions. Specifically, the "Front left height sensor" is located on the front left side of the vehicle, such as near the front left wheel; the "Front right height sensor" is located on the front right side of the vehicle, such as near the front right wheel; the "Rear left height sensor" is located on the rear left side of the vehicle, such as near the rear left wheel; and the "Rear right height sensor" is located on the rear right side of the vehicle, such as near the rear right wheel.

[0065] Each height sensor corresponds to a different air suspension unit, thus facilitating the adjustment of the vehicle's height.

[0066] The control module includes a control unit (ECU).

[0067] This invention provides a vehicle stability control method for automobiles; the vehicle stability control method comprises: acquiring the real-time vehicle height h, comparing the real-time height h with a preset height h0, and adjusting the opening and closing of the compressor 3, the through hole 5011, the air outlet 1102 and the vent hole 1103 according to the comparison result between the real-time height h and the preset height h0.

[0068] Based on the comparison between the real-time height h and the preset height h0, the opening and closing of the compressor 3, the vent 1102 of the through hole 5011, and the vent 1103 are adjusted, thereby adjusting the height of the airbag 2. Compared with existing methods that adjust the compressor 3 and the energy storage tank based on the pressure inside the airbag 2, this application only considers the vehicle body height, which is more direct and provides more sensitive feedback. Generally, different height sensors are installed at multiple locations on the vehicle body, with each height sensor corresponding to an air suspension device; based on the real-time height h detected by each height sensor, h is compared with the preset height h0, and then the air suspension device corresponding to that height sensor is adjusted.

[0069] Preferably, the vehicle stability control method includes multiple control modes, the multiple control modes including:

[0070] When |h-h0|<ΔH1, mode one is executed, which means: the compressor 3 is closed, the through hole 5011 is closed, the air outlet 1102 is closed and the vent 1103 is closed; h0 is the preset height and ΔH is the preset height difference;

[0071] When |h-h0|≥ΔH1 and h-h0>0, mode two is executed, which is: the compressor 3 is closed, the through hole 5011 is closed, the air outlet 1102 is open, and the vent hole 1103 is open;

[0072] When |h-h0|≥ΔH1 and h-h0<0, mode three is executed, which means: the compressor 3 is closed, the through hole 5011 is opened, the air outlet 1102 is opened, and the vent hole 1103 is closed;

[0073] When |h-h0|≥ΔH1 and h0-h>ΔH2, mode four is executed, which means that the compressor 3 is turned on, the through hole 5011 is turned on, the air outlet 1102 is turned on, and the vent hole 1103 is turned off.

[0074] The real-time vehicle height h is obtained. When |h-h0| < ΔH1, it indicates that the vertical fluctuation of the vehicle height is small, and no adjustment is made to the vehicle height. Mode 1 is executed, which means that the compressor 3, the through hole 5011, the air outlet 1102, and the vent 1103 are all closed. h0 is the preset height, and ΔH is the preset height difference. h0 can be set manually, automatically when the car is parked on a flat surface, or automatically during smooth driving. The setting of h0 can also consider the tire pressure; when the tire pressure is high, h0 is set higher, and when the tire pressure is low, h0 is set lower. ΔH can also be set manually. When a more comfortable experience is needed, ΔH can be set smaller, but frequent adjustments will sacrifice some of the car's handling capabilities. When better handling is needed, ΔH can be set larger, but comfort will decrease.

[0075] When |h-h0|≥ΔH1 and h-h0>0, the vehicle height is too high and the deviation is too large, so adjustment is required. Mode 2 is executed, which is as follows: the compressor 3 is closed, the through hole 5011 is closed, the air outlet 1102 is opened, and the vent hole 1103 is opened; the gas in the airbag 2 is discharged through the air outlet 1102 and the vent hole 1103, the pressure in the airbag 2 decreases, and the vehicle height decreases.

[0076] When |h-h0|≥ΔH1 and h-h0<0, the vehicle height is low, and the vehicle needs to be raised. Mode 3 is executed, which is: the compressor 3 is closed, the through hole 5011 is open, the air outlet 1102 is open, and the vent 1103 is closed; the high-pressure gas in the energy storage chamber 4011 enters the airbag 2 through the through hole 5011 and the air outlet 1102 to raise the vehicle.

[0077] When |h-h0|≥ΔH1 and h0-h>ΔH2, the vehicle height is too low and needs to be raised quickly and by a large margin. In this case, mode four is executed. Mode four is as follows: the compressor 3 is turned on, the through hole 5011 is turned on, the air outlet 1102 is turned on, and the vent 1103 is turned off. The high-pressure gas in the energy storage chamber 4011 enters the airbag 2 through the through hole 5011 and the air outlet 1102. At the same time, the compressor 3 inputs the high-pressure gas into the energy storage airbag 2 to ensure the stability of the pressure and gas volume in the energy storage chamber 4011.

[0078] The four control modes can be implemented individually or in combination depending on the actual situation. For example: when a car transitions from a smooth road to a bumpy road; initially, when the road conditions are good, mode one is executed, with the compressor 3 shut off, the through-hole 5011 closed, the air outlet 1102 closed, and the vent 1103 closed; the vehicle height is not adjusted. Due to road conditions, when the vehicle height is high, mode two is executed, with the compressor 3 shut off, the through-hole 5011 closed, the air outlet 1102 opened, and the vent 1103 opened; the gas in the airbag 2 is released through the air outlet 1102 and the vent 1103, reducing the pressure in the airbag 2 and lowering the vehicle height; if the airbag 2 deflates excessively, or due to road conditions, the vehicle height is low, but ΔH1 < h0 - h < ΔH2, mode three ... then mode three is executed, with the compressor 3 shut off When compressor 3 is turned off, the through hole 5011 is opened, the air outlet 1102 is opened, and the vent 1103 is closed. High-pressure gas in the energy storage chamber 4011 enters the airbag 2 through the through hole 5011 and the air outlet 1102, raising the vehicle body. After executing mode two, if the vehicle body height decreases too quickly, or the tires leak air, or due to road conditions, causing ΔH2 < h0 - h, compressor 3 is turned on, the through hole 5011 is opened, the air outlet 1102 is opened, and the vent 1103 is closed. High-pressure gas in the energy storage chamber 4011 enters the airbag 2 through the through hole 5011 and the air outlet 1102. Simultaneously, compressor 3 inputs high-pressure gas into the energy storage airbag 2 to ensure stable pressure and gas volume within the energy storage chamber 4011. When executing mode three, if the vehicle body height is still outside a reasonable range, mode four can be executed. When executing mode three or mode four, or if the vehicle body height is too high due to road conditions, mode two can be executed again. In this way, the four control modes are independent of each other, yet they can work together to enable the car to cope with complex road conditions.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An air suspension device, characterized in that, include: The mounting base (1) has a cavity (4) having an air inlet (1101) and an air outlet (1102). An airbag (2) is connected and disposed above the mounting base (1), and the air outlet (1102) is connected to the airbag (2); A compressor (3) is disposed in the cavity (4). The suction port (301) of the compressor (3) is connected to the air inlet (1101), and the exhaust port (302) of the compressor (3) is connected to the cavity (4). The mounting base (1) is provided with a first partition (501), which divides the cavity (4) into a first cavity (401) and a second cavity (402). The first partition (501) is provided with a through hole (5011) connecting the first cavity (401) and the second cavity (402). The compressor (3) is disposed in the first cavity (401). The exhaust port (302) is connected to the first cavity (401). The air outlet (1102) is connected to the second cavity (402). The mounting base (1) is also provided with a vent hole (1103) connected to the second cavity (402).

2. The air suspension device according to claim 1, characterized in that, The first cavity (401) is provided with a flow path switching controller, which can control the opening and closing of the through hole (5011), the air outlet (1102), and the vent (1103).

3. The air suspension device according to claim 1, characterized in that, A second partition (502) is provided in the first cavity (401). The second partition (502) and the end face where the exhaust port (302) of the compressor (3) is located divide the first cavity (401) into an energy storage cavity (4011) and a receiving cavity (4012). The air inlet (1101) is connected to the receiving cavity (4012). The compressor (3) is located in the receiving cavity (4012). The air intake (301) of the compressor (3) is connected to the receiving cavity (4012). A filter device is provided in the receiving cavity (4012). The filter device is located between the air inlet (1101) and the air intake (301).

4. The air suspension device according to claim 3, characterized in that, The mounting base (1) includes a base body (101) and a removable base plate (102) mounted on the bottom of the base body (101).

5. The air suspension device according to claim 4, characterized in that, The detachable base plate (102) is provided with a wire groove (1021), which connects the first cavity (401) and the receiving cavity (4012) and leads to the outside of the mounting base (1).

6. A car, characterized in that, It includes a control module and the air suspension device as described in any one of claims 2-5.

7. The automobile according to claim 6, characterized in that, The number of air suspension devices is four; the control module includes a front left height sensor, a front right height sensor, a rear left height sensor, and a rear right height sensor for detecting the height of different parts of the vehicle body; each air suspension device corresponds one-to-one with each sensor.

8. A vehicle stability control method, characterized in that, Used in the automobile of claim 7; the vehicle stability control method is as follows: obtaining the real-time height h of the vehicle body, comparing the real-time height h with the preset height h0, and adjusting the opening and closing of the compressor (3), the through hole (5011), the air outlet (1102) and the vent hole (1103) according to the comparison result between the real-time height h and the preset height h0.

9. The vehicle stability control method according to claim 8, characterized in that, The vehicle stability control method includes multiple control modes, including: When |h-h0|<ΔH1, mode one is executed, which is: the compressor (3) is closed, the through hole (5011) is closed, the air outlet (1102) is closed and the vent hole (1103) is closed; h0 is the preset height and ΔH is the preset height difference; When |h-h0|≥ΔH1 and h-h0>0, execute mode two, which is: the compressor (3) is closed, the through hole (5011) is closed, the air outlet (1102) is open, and the vent hole (1103) is open; When |h-h0|≥ΔH1 and h-h0<0, execute mode three, which is: the compressor (3) is closed, the through hole (5011) is opened, the air outlet (1102) is opened, and the vent hole (1103) is closed; When |h-h0|≥ΔH1 and h0-h>ΔH2, mode four is executed. Mode four is: the compressor (3) is opened, the through hole (5011) is opened, the air outlet (1102) is opened, and the vent hole (1103) is closed.

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