Split type automobile air supply unit and control method thereof

Abstract

The invention discloses a split type automobile air supply unit and a control method thereof.The split type automobile air supply unit comprises an installation support used for being connected with an automobile, a compressor assembly is installed on the installation support through a vibration reduction installation assembly, and the compressor assembly comprises an integrated valve body and an ECU assembly arranged on one side of the integrated valve body; the integrated valve body is provided with a booster pump assembly and a switching valve assembly, one side of the integrated valve body is provided with a driving motor matched with the booster pump assembly, the integrated valve body is connected with an air inlet pipe and an exhaust pipe, and the integrated valve body is connected with a dryer assembly through an air pipe to form a loop. The dryer assembly and the compressor assembly are arranged in a split mode. The compressor assembly and the dryer assembly are arranged in a separated mode, the overall size is small, arrangement in a vehicle cabin is more flexible, and the dryer does not need to be heated and regenerated through heat generated by a motor and compressed gas.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive air supply units, and particularly to a split-type automotive air supply unit and its control method. Background Art

[0002] With the gradual improvement of the requirements for automotive comfort, air suspensions have developed rapidly, the design of electronic products has tended to be modular and miniaturized, and the integration requirements for air supply units used for air suspension control have also become higher and higher. It is required that the air supply unit be more miniaturized and the installation be more flexible. In addition, the existing air supply units have a relatively single working mode, which is limited to the air supply control of the air suspension and cannot meet the usage requirements under system leakage, environmental temperature changes, and other special working conditions. Summary of the Invention

[0003] The present invention provides a split-type automotive air supply unit and its control method, which can solve the problems of the existing air supply units being not miniaturized enough, having inflexible installation, and having a relatively single working mode.

[0004] To achieve the above object, in the first aspect, the present invention provides the following technical solution: A split-type automotive air supply unit includes a mounting bracket for connecting to an automobile. A compressor assembly is mounted on the mounting bracket through a vibration damping mounting assembly. The compressor assembly includes an integrated valve body and an ECU assembly disposed on one side of the integrated valve body. A booster pump assembly and a switching valve assembly are mounted on the integrated valve body. A drive motor matching the booster pump assembly is mounted on one side of the integrated valve body. An intake pipe and an exhaust pipe are connected to the integrated valve body. The integrated valve body is connected to a dryer assembly through a gas pipe to form a loop. The dryer assembly is separated from the compressor assembly. The switching valve assembly includes an exhaust valve connected to the exhaust pipe, a first switching valve and a second switching valve connected to the air circuit of the automotive air suspension module, a fourth switching valve disposed on the gas path between the dryer assembly and the air storage tank, and a third switching valve disposed on the gas path between the air storage tank and the intake end of the compressor assembly. The first switching valve and the second switching valve are also connected to the dryer assembly and the intake end of the compressor assembly through a gas path. A pressure detection unit is disposed on the gas path between the first switching valve and the automotive air suspension module. By adopting the layout mode of separating the compressor assembly from the dryer assembly, the overall volume is small, the installation in the vehicle cabin is more flexible, there is no need to heat and regenerate the dryer by using the heat generated by the motor and compressed gas, and various working mode switches can be realized by using the switching valve assembly to meet the usage needs under system leakage, environmental temperature changes, and other special working conditions.

[0005] Preferably, the dryer assembly includes a drying tank body and a drying tank mounting bracket installed on one side of the drying tank body. The drying tank mounting bracket is connected to the vehicle through a vibration damping bushing assembly, and the stable and vibration-damping installation of the dryer assembly can be achieved through the drying tank mounting bracket.

[0006] Preferably, the first switching valve is also connected to a manual exhaust component through a gas path. The manual exhaust component can manually exhaust gas when it is necessary to discharge the gas in the system, improving the flexibility of use.

[0007] Preferably, the switching valve assembly further includes a power limiting valve. The power limiting valve is connected to both the intake end and the outlet end of the booster pump assembly through a gas path. When the air pressure in the system reaches a fixed value, the power limiting valve opens to release some gas to prevent the air pressure in the system from being too high.

[0008] Preferably, the vibration-damping mounting assembly includes a first vibration-damping pad provided on one side of the mounting bracket, a second vibration-damping pad provided on the other side of the mounting bracket, a first bracket backing plate provided outside the first vibration-damping pad, a second bracket backing plate connected to the outside of the second vibration-damping pad, a plurality of bracket springs provided between the first vibration-damping pad and the first bracket backing plate, a plurality of bracket bolts installed on the mounting bracket and sequentially passing through the first bracket backing plate, the first vibration-damping pad, the mounting bracket, the second vibration-damping pad, and the second bracket backing plate, and a plurality of vibration-damping bushing assemblies provided at the edge position of the mounting bracket. Among them, the first vibration-damping pad and the second vibration-damping pad can absorb the vibration generated during the operation of the air supply unit, and the vibration-damping bushing assemblies vibration-dampingly mount the mounting bracket and the air supply unit in the vehicle, and can control and eliminate both the vibration generated during the operation of the air supply unit and the vibration during vehicle driving, meeting the installation and use requirements of the air supply unit.

[0009] Preferably, a spring seat is installed at a position corresponding to the bracket spring on the inner side of the first bracket backing plate, and the bracket spring is provided between the spring seat and the first vibration-damping pad. The spring seat can limit the bracket spring to prevent the bracket spring from deflecting.

[0010] Preferably, the spring seat is connected to the first bracket backing plate by a first snap post passing through the first bracket backing plate, and the second vibration-damping pad is connected to the second bracket backing plate by a plurality of second snap posts passing through the second bracket backing plate. The first snap post facilitates the quick disassembly and installation of the spring seat and the first bracket backing plate, and the second snap post can facilitate the quick disassembly and installation of the second vibration-damping pad and the second bracket backing plate.

[0011] Preferably, an air inlet hole seat and an air outlet hole seat are arranged side by side on the air inlet and outlet mounting seat. The upper ends of the air inlet hole seat and the air outlet hole seat are inserted with tracheal nozzles, and an air inlet pipe and an exhaust pipe are respectively connected to the corresponding tracheal nozzles. The air inlet pipe and the exhaust pipe extend outwards and are combined into a composite air inlet and exhaust pipe. A filter is installed at the position between the air inlet pipe and the composite air inlet and exhaust pipe. The air inlet pipe and the exhaust pipe are uniformly connected to the air supply unit through the air inlet and outlet mounting seat, and the air inlet pipe and the exhaust pipe are led out through the composite air inlet and exhaust pipe, greatly improving the integration degree of the air inlet and outlet connection structure and facilitating the flexible installation of the air inlet and outlet structure of the air supply unit.

[0012] Preferably, a buckle strip is arranged along the axial direction on one side of the tracheal nozzle. The limiting hook at one end of the buckle strip is buckled with the buckle groove outside the air inlet hole seat or the air outlet hole seat. A pressing part is arranged at the other end of the buckle strip. When the pressing part is pressed inwards, the limiting hook is separated from the buckle groove. The tracheal nozzle can be quickly installed and disassembled from the air outlet hole seat or the air inlet hole seat through the buckle strip. In this way, the connection and disassembly between the air inlet pipe and the exhaust pipe and the air outlet hole seat and the air inlet hole seat are relatively fast, and the use effect can be improved.

[0013] In a second aspect, a control method for a split-type vehicle air supply unit according to the first aspect includes the following working modes:

[0014] Inflating the air storage tank with external gas: The compressor assembly is started, the driving motor drives the booster pump assembly to operate, the air in the atmosphere is pressurized by the booster pump assembly and then conveyed to the switching valve assembly through the dryer assembly. The fourth switching valve is powered on and opened, and the gas is stored in the air storage tank. At the same time, the first switching valve is powered on and opened, and the pressure in the air storage tank is monitored in real time through the air pressure detection unit. A certain amount of gas is compressed into the air storage tank by the compressor for reserve use;

[0015] Inflating the vehicle air suspension module with the gas in the air storage tank: The compressor assembly is started, and the third switching valve is powered on and opened. The gas in the air storage tank can be pressurized by the booster pump assembly and then conveyed to the first switching valve through the dryer assembly. After the first switching valve is powered on and opened, the high-pressure gas enters the vehicle air suspension module, causing the front axle or the rear axle or both axles to rise, increasing the body height. At the same time, the system pressure is monitored in real time through the air pressure detection unit;

[0016] Inflating the vehicle air suspension module with external gas: The compressor assembly is started, the gas in the atmosphere is pressurized by the booster pump assembly and then conveyed to the switching valve assembly through the dryer assembly. By opening the first switching valve, the high-pressure gas enters the vehicle air suspension module, causing the front axle or the rear axle or both axles to rise, increasing the body height. At the same time, the system pressure is monitored in real time through the air pressure detection unit. The vehicle air suspension module can be directly controlled by using the external air without using the gas in the air storage tank;

[0017] Gas recharge air storage tank of automotive air suspension module: When the compressor assembly starts and the second switching valve is powered on and opened to open the automotive air suspension module, after the gas in the automotive air suspension module is pressurized by the booster pump assembly, it then passes through the dryer assembly and is delivered to the fourth switching valve. After the fourth switching valve is powered on and opened, the compressed gas is temporarily stored in the air storage tank. At the same time, the system pressure is monitored in real time by the air pressure detection unit to achieve the lowering of the vehicle body height.

[0018] Air storage tank pressure test: The compressor assembly does not need to start. By powering on and opening the first switching valve, the third switching valve, and the fourth switching valve, the gas pressure in the air storage tank can be measured, and air can be supplemented or released according to the measurement results.

[0019] Pressure balance between the air storage tank and the automotive air suspension module: The compressor assembly does not need to start. When the air pressure in either the air storage tank or the automotive air suspension module is greater than the other, the first switching valve, the third switching valve, and the fourth switching valve are opened to control the opening and closing of the air spring solenoid valves on the corresponding wheels in the automotive air suspension module to balance the pressures in the automotive air suspension module and the air storage tank, and to balance the pressures before and after the compressor assembly, reducing the torque when the motor starts. At the same time, the connected gas can be used to adjust the vehicle body height, saving energy consumption.

[0020] Desiccant regeneration: The compressor assembly does not need to start. The first switching valve, the fourth switching valve, and the exhaust valve are opened, and the gas in the air storage tank blows out the moisture in the desiccant of the dryer assembly. At the same time, the system pressure is monitored in real time by the air pressure detection unit.

[0021] Emergency air release: The compressor assembly does not need to start. The air spring solenoid valve on the corresponding wheel in the automotive air suspension module A is opened, and the exhaust valve is opened. The gas in the air spring passes through the compressor assembly and is discharged through the exhaust valve to release excessive pressure, and the vehicle height can also be quickly adjusted downward.

[0022] Overpressure protection: All the switching valve components are closed, and the power limiting valve is connected to the intake end and the outlet end of the booster pump assembly through the gas path at the same time. The system pressure can be discharged to the outside through the power limiting valve to limit the maximum pressure of the system to protect the entire system.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) Adopting a layout method of separating the compressor assembly and the dryer assembly, the overall volume is small, and the arrangement in the vehicle cabin is more flexible. There is no need to heat and regenerate the dryer using the heat generated by the motor and compressed gas. By using the switching valve assembly, various working modes can be switched to meet the usage requirements of system leakage, environmental temperature changes, and other special working conditions.

[0025] (2) Adopt a newly designed vibration damping installation structure. The vibration damping structure is compact and reliable, occupies a small volume. By setting the first support pad, the first vibration damping pad, the support spring, the second vibration damping pad and the second support pad, the air supply unit can be vibration-damped and supported. Among them, the first vibration damping pad and the second vibration damping pad can absorb the vibration generated when the air supply unit works. The vibration damping bushing assembly vibration-damps and installs the mounting bracket and the air supply unit in the vehicle, and can control both the vibration generated when the air supply unit works and the vibration during vehicle driving, meeting the installation and use requirements of the air supply unit;

[0026] (3) The intake pipe and the exhaust pipe are uniformly connected to the air supply unit through the intake and exhaust mounting seat, and the intake pipe and the exhaust pipe are led out through the composite intake and exhaust pipe, greatly improving the integration degree of the intake and exhaust connection structure and facilitating the rapid assembly of the intake pipe and the exhaust pipe as an integrated component with the vehicle air supply unit. Description of the Drawings

[0027] Figure 1 Is the first perspective three-dimensional view of the overall structure of the present invention;

[0028] Figure 2 Is the second perspective three-dimensional view of the overall structure of the present invention;

[0029] Figure 3 Is the top view structure diagram of the vibration damping installation assembly of the present invention;

[0030] Figure 4 Is Figure 3 The A-A sectional view structure diagram of;

[0031] Figure 5 Is Figure 3 The B-B sectional view structure diagram of;

[0032] Figure 6 Is Figure 3 The C-C sectional view structure diagram of;

[0033] Figure 7 Is the three-dimensional structure diagram of the first vibration damping pad of the present invention;

[0034] Figure 8 Is the overall three-dimensional structure diagram of the intake and exhaust connection structure of the present invention;

[0035] Figure 9 Is the partial sectional view structure diagram of the present invention;

[0036] Figure 10 Is the three-dimensional structure diagram of the intake and exhaust mounting seat of the present invention;

[0037] Figure 11 Is the air control principle system diagram of the present invention;

[0038] Figure 12 This is the schematic diagram of the principle of inflating the gas storage tank with external gas for the present invention;

[0039] Figure 13 This is the schematic diagram of the principle of inflating the vehicle air suspension module with the gas storage tank for the present invention;

[0040] Figure 14 This is the schematic diagram of the principle of inflating the vehicle air suspension module with external gas for the present invention;

[0041] Figure 15 This is the schematic diagram of the principle of the gas in the vehicle air suspension module being recharged into the gas storage tank for the present invention;

[0042] Figure 16 This is the schematic diagram of the principle of the pressure test of the gas storage tank for the present invention;

[0043] Figure 17 This is the schematic diagram of the principle of the pressure balance between the gas storage tank and the vehicle air suspension module for the present invention;

[0044] Figure 18 This is the schematic diagram of the principle of the desiccant regeneration mode for the present invention;

[0045] Figure 19 This is the schematic diagram of the principle of the emergency deflation mode for the present invention;

[0046] Figure 20 This is the schematic diagram of the principle of the overpressure protection mode for the present invention.

[0047] Reference numerals:

[0048] 1. Mounting bracket, 11. Manual exhaust component, 110. Air inlet hole seat, 111. Air pipe insertion nozzle, 112. Connecting screw, 114. Buckle strip, 115. Pressing part, 116. Limit hook, 117. Exhaust hole seat, 118. Buckle groove, 119. Sealing ring, 12. Air storage tank, 13. Power limit valve, 14. Air pressure detection unit, 15. Switching valve assembly, 16. Mounting pipe clamp, 2. Intake pipe, 20. Compressor assembly, 22. First bracket backing plate, 23. Second vibration damping pad, 24. Bracket bolt, 25. Vibration damping bushing assembly, 26. First vibration damping pad, 27. Second bracket backing plate, 28. Support column, 29. Bracket spring, 210. Spring seat, 212. Inner core of vibration damping bushing, 213. Flanging part, 214. Second snap post, 215. First snap post, 216. Support bump, 217. Vibration isolation bushing kit, 3. Exhaust pipe, 4. Bracket bolt, 5. Filter, 6. Desiccant assembly, 61. Desiccant tank mounting bracket, 7. Mounting bracket, 8. ECU assembly, 9. Integrated valve body, 10. Driving motor, EV. Exhaust valve, SV1. First switching valve, SV2. Second switching valve, SV3. Third switching valve, SV4. Fourth switching valve, A. Automotive air suspension module. Detailed implementation mode

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0050] As Figure 1-12As shown in the figure, in order to solve the problems of the existing air supply unit being not small enough, inflexible in installation, and having a relatively single working mode, the present invention provides the following technical solutions: In the first aspect, the present invention provides the following technical solutions: A split-type automotive air supply unit includes a mounting bracket 7 for connecting to an automobile. A compressor assembly 20 is mounted on the mounting bracket 7 through a vibration damping mounting assembly. The compressor assembly 20 includes an integrated valve body 9 and an ECU assembly 8 disposed on one side of the integrated valve body 9. A supercharger pump assembly and a switching valve assembly 15 are mounted on the integrated valve body 9. A drive motor 10 matching the supercharger pump assembly is mounted on one side of the integrated valve body 9. An intake pipe 2 and an exhaust pipe 3 are connected to the integrated valve body 9. The integrated valve body 9 is connected to a dryer assembly 6 through a gas pipe to form a loop. The dryer assembly 6 is separately arranged from the compressor assembly 20. The switching valve assembly 15 includes an exhaust valve EV connected to the exhaust pipe 3, a first switching valve SV1 and a second switching valve SV2 connected to the air circuit of the automotive air suspension module A, a fourth switching valve SV4 disposed on the air circuit between the dryer assembly 6 and the air storage tank 12, and a third switching valve SV3 disposed on the air circuit between the air storage tank 12 and the intake end of the compressor assembly 20. The first switching valve SV1 and the second switching valve SV2 are also connected to the dryer assembly 6 and the intake end of the compressor assembly 20 through an air circuit. A pressure detection unit 14 is disposed on the air circuit between the first switching valve SV1 and the automotive air suspension module A. By adopting the arrangement method of separating the compressor assembly 20 from the dryer assembly 6, the overall volume is small, and the setting in the vehicle cabin is more flexible. There is no need to heat and regenerate the dryer by using the heat generated by the motor and compressed gas. The switching valve assembly 15 can be used to realize the switching of multiple working modes, meeting the use requirements of system leakage, environmental temperature change, and other special working conditions.

[0051] Specifically, the integrated valve body 9 is a block structure, and a bidirectional piston arm and an eccentric wheel are installed inside it. The bidirectional piston arm and the eccentric wheel are connected to the main shaft of the drive motor 10 through a fixing pin. The drive motor 10 converts electrical energy into mechanical energy, drives the piston arm to do reciprocating motion, and generates compressed gas. The switching valve assembly 15 is integrally arranged on the integrated valve body 9. Except for the gas pipe connected to the dryer assembly 6, other connecting air circuits are air channels inside the integrated valve body 9, without the need to use external gas pipes, and the integration degree is high. The housing of the drive motor 10 is fixed on the integrated valve body 9 through motor bolts, and the motor housing 4 is sealed with the integrated valve body 9 through a motor sealing ring to avoid air leakage of the motor module.

[0052] The main function of the ECU assembly 8 is to control the operating conditions required for the split-type vehicle air supply unit. It includes a PCBA board installed in the ECU base, which includes a plurality of coil assemblies corresponding to the switching valve assembly 15, installed on the corresponding ECU base, and then connected to the PCBA board through a grounding shrapnel. Its function is to control the opening and closing of each switching valve on the switching valve assembly 15 by energizing and de-energizing the coil assembly, thereby controlling the closing of the corresponding air passages of the integrated valve body 9 to control different operating conditions of the split-type vehicle air supply unit; after the PCBA board is installed, an ECU cover is installed to protect the PCBA board; the motor plug is installed on the ECU base and drives the motor 10 through the shrapnel in the motor plug, and its function is to control the operation of the motor.

[0053] In this embodiment, the dryer assembly 6 includes a drying tank body and a drying tank mounting bracket 61 installed on one side of the drying tank body. The drying tank mounting bracket 61 is connected to the vehicle through a vibration damping bushing assembly 25, and the stable and vibration damping installation of the dryer assembly 6 can be realized through the drying tank mounting bracket 61.

[0054] In this embodiment, the first switching valve SV1 is also connected to the air passage of the manual exhaust component 11. The manual exhaust component 11 can manually exhaust when the gas in the system needs to be discharged, improving the flexibility of use. At the same time, the switching valve assembly 15 further includes a power limiting valve 13, and the power limiting valve 13 is connected to the air inlet end and the air outlet end of the booster pump assembly through the air passage at the same time. When the air pressure in the system reaches a fixed value, the power limiting valve 13 opens to release some gas to avoid excessive air pressure in the system.

[0055] In this embodiment, the vibration damping mounting assembly includes a first vibration damping pad 26 arranged on one side of the mounting bracket 7, a second vibration damping pad 23 arranged on the other side of the mounting bracket 7, a first bracket backing plate 22 arranged outside the first vibration damping pad 26, a second bracket backing plate 27 connected to the outside of the second vibration damping pad 23, a plurality of bracket springs 29 arranged between the first vibration damping pad 26 and the first bracket backing plate 22, a plurality of bracket bolts 24 installed on the mounting bracket 7 and sequentially passing through the first bracket backing plate 22, the first vibration damping pad 26, the mounting bracket 7, the second vibration damping pad 23 and the second bracket backing plate 27, and a plurality of vibration damping bushing assemblies 25 arranged at the edge position of the mounting bracket 7. Among them, the first vibration damping pad 26 and the second vibration damping pad 23 can absorb the vibration generated during the operation of the air supply unit, and the vibration damping bushing assembly 25 vibration-damping mounts the mounting bracket 7 and the air supply unit into the vehicle, and can control and eliminate the vibration generated during the operation of the air supply unit and the vibration during the vehicle driving at the same time, meeting the installation and use requirements of the air supply unit.

[0056] The vibration damping bushing assembly 25 can be respectively installed on the adjacent side parts of the mounting bracket 7. An installation bolt axially passes through the vibration damping bushing assembly 25 and can be installed inside the vehicle. The air supply unit is installed on the upper side of the mounting bracket 7 and is installed through the bracket bolt 24. Among them, the first vibration damping pad 26 and the second vibration damping pad 23 wrap the mounting bracket 7, and the bracket spring 29 can damp the position between the first vibration damping pad 26 and the first bracket backing plate 22.

[0057] As Figure 3-6 shown, in order to limit the bracket spring 29, a spring seat 210 is installed at a position corresponding to the bracket spring 29 on the inner side of the first bracket backing plate 22. The bracket spring 29 is arranged between the spring seat 210 and the first vibration damping pad 26. The bracket spring 29 can be limited by the spring seat 210 to prevent the bracket spring from deflecting. In addition, the spring seat 210 is connected to the first bracket backing plate 22 by the first snap post 215 passing through the first bracket backing plate 22. The second vibration damping pad 23 is connected to the second bracket backing plate 27 by a plurality of second snap posts 214 passing through the second bracket backing plate 27. The first snap post 215 facilitates the quick disassembly and installation of the spring seat and the first bracket backing plate, and the second snap post can facilitate the quick disassembly and installation of the second vibration damping pad and the second bracket backing plate. A support post 28 can also be sleeved outside the bracket bolt 24. The two ends of the support post 28 respectively abut against the first bracket backing plate 22 and the second bracket backing plate 27. The support post 28 can protect and guide the bracket bolt 24, and the support post 28 can limit the distance between the first bracket backing plate 22 and the second bracket backing plate 27 to improve the vibration damping connection effect.

[0058] In this embodiment, as Figure 7 shown, a plurality of support bumps 216 are arranged on the side of the first vibration damping pad 26 facing the first bracket backing plate 22 and on the side of the second vibration damping pad 23 facing the mounting bracket 1. The support bumps 216 can improve the strength of the first vibration damping pad 26 and the second vibration damping pad 23 and play a buffering role when the first vibration damping pad 26 collides with the first bracket backing plate 22 and when the second vibration damping pad 23 collides with the mounting bracket 7.

[0059] In this embodiment, as Figure 5 shown, the vibration damping bushing assembly 25 includes a vibration damping bushing inner core 212 and a vibration isolation bushing set 217 axially embedded inside the vibration damping bushing inner core 212. The vibration isolation bushing set 217 can allow a connecting bolt to pass through, and the vibration damping bushing inner core 212 plays a vibration damping role.

[0060] Among them, a flanging portion 213 is provided at the opening of the mounting bracket 7 corresponding to the inner core 212 of the vibration damping bushing. The flanging portion 213 is embedded in the groove outside the inner core 212 of the vibration damping bushing. The flanging portion 213 can improve the mounting strength of the inner core 212 of the vibration damping bushing and is not easily deformed.

[0061] In this embodiment, as Figure 8-10 shown, an air inlet hole seat 110 and an exhaust hole seat 117 are arranged side by side on the intake and exhaust mounting seat 1. The upper ends of the air inlet hole seat 110 and the exhaust hole seat 117 are inserted with tracheal nozzles 111, and an intake pipe 2 and an exhaust pipe 3 are respectively connected to the corresponding tracheal nozzles 111. The intake pipe 2 and the exhaust pipe 3 extend outward and are combined into a composite intake and exhaust pipe 4. A filter 5 is installed at the position between the intake pipe 2 and the composite intake and exhaust pipe 4. The intake pipe 2 and the exhaust pipe 3 are uniformly connected to the air supply unit through the intake and exhaust mounting seat 1, and the intake pipe 2 and the exhaust pipe 3 are led out through the composite intake and exhaust pipe 4, which greatly improves the integration degree of the intake and exhaust connection structure and facilitates the flexible installation of the intake and exhaust structure of the air supply unit.

[0062] During use, the intake and exhaust mounting seat 1, the intake pipe 2, the exhaust pipe 3, and the composite intake and exhaust pipe 4 are connected to form a whole. When installing, the intake and exhaust mounting seat 1 can be directly installed. Similarly, the tracheal nozzle 111 is fixedly connected to the intake pipe 2 and the exhaust pipe 3. A quick plugging and disassembling structure is provided between the tracheal nozzle 111 and the intake and exhaust mounting seat 1. By plugging the two tracheal nozzles 111 into the intake and exhaust mounting seat 1, the quick connection and installation of the intake pipe 2 and the exhaust pipe 3 can be realized. Among them, a pair of air channels are arranged side by side inside the composite intake and exhaust pipe 4, and the two air channels are respectively communicated with the intake pipe 2 and the exhaust pipe 3. The composite intake and exhaust pipe 4, the intake pipe 2, and the exhaust pipe 3 are of an integral structure.

[0063] In this embodiment, a fastening strip 114 is arranged along the axial direction on one side of the tracheal insertion nozzle 111. A limiting hook 116 at one end of the fastening strip 114 is buckled with a fastening groove 118 on the outer side of the air inlet hole seat 110 or the exhaust hole seat 117. A pressing part 115 is arranged at the other end of the fastening strip 114. When the pressing part 115 is pressed inward, the limiting hook 116 is disengaged from the fastening groove 118. Through the fastening strip 114, the quick installation and disassembly of the tracheal insertion nozzle 111 and the exhaust hole seat 117 or the air inlet hole seat 110 can be realized. In this way, the connection and disassembly between the intake pipe 2 and the exhaust pipe 3 and the exhaust hole seat 117 and the air inlet hole seat 110 are relatively fast, and the use effect can be improved. When in use, the tracheal insertion nozzle 111 is directly inserted into the concave cavity at the upper end of the air inlet hole seat 110 or the exhaust hole seat 117. The limiting hook 116 at the lower end of the fastening strip 114 can move along the outer side wall of the air inlet hole seat 110 or the exhaust hole seat 117 until the limiting hook 116 is buckled with the fastening groove 118, and the installation connection between the tracheal insertion nozzle 111 and the air inlet hole seat 110 or the exhaust hole seat 117 can be realized.

[0064] The lower end of the tracheal insertion nozzle 111 is inserted into the concave cavity at the upper end of the air inlet hole seat 110 or the exhaust hole seat 117, and a sealing ring 119 is installed between the outer side of the tracheal insertion nozzle 111 and the side wall of the concave cavity. Through the sealing ring 119, the sealing performance of the gas flow in the intake pipe 2 and the exhaust pipe 3 can be improved.

[0065] In order to filter the air, a filter 5 is installed at the position between the intake pipe 2 and the composite intake and exhaust pipe 4, which can remove impurities in the air and ensure that clean gas enters the air supply unit. A filter element is arranged inside the filter 5 and is connected to the intake pipe 2 at both ends respectively. The filter 5 is composed of an upper shell and a lower shell, and the filter element is installed inside the shell. The main function of the filter element is to remove impurities in the air.

[0066] In addition, the intake and exhaust mounting seat 1 is connected to the vehicle air supply unit through a connecting screw 112 between the outer sides of the air inlet hole seat 110 and the exhaust hole seat 117, which is convenient for installing and fixing the intake and exhaust mounting seat 1 to the air supply unit. A plurality of mounting pipe clamps 16 are installed on the composite intake and exhaust pipe 4, which is convenient for installing and fixing the composite intake and exhaust pipe 4. The mounting pipe clamps 16 can move along the composite intake and exhaust pipe 4 to facilitate the adjustment of the position.

[0067] In this embodiment, as the control method of the above-mentioned split-type vehicle air supply unit, it includes the following working modes. It should be noted that the following working modes correspond Figure 12-20 , the thick line in the figure is the gas flow line in the system in this working mode, and the lightning pattern in the figure refers to power-on. Placing it next to the solenoid valve means that this solenoid valve is powered on:

[0068] Such asFigure 11-12 As shown in the figure, the external gas inflates the gas storage tank: The compressor assembly 20 is started, the drive motor 10 drives the booster pump assembly to operate, the air in the atmosphere is pressurized by the booster pump assembly and then transported to the switching valve assembly 15 through the dryer assembly 6. The fourth switching valve SV4 is powered on and opened, and the gas is stored in the gas storage tank 12. At the same time, the first switching valve SV1 is powered on and opened. The pressure in the gas storage tank 12 is monitored in real time through the pressure detection unit 14, and a certain amount of gas is compressed into the gas storage tank by the compressor for reserve use. Whether the gas storage tank needs to be inflated can be determined through the monitored pressure;

[0069] As Figure 13 As shown in the figure, the gas storage tank inflates the automotive air suspension module A: The compressor assembly 20 is started. The third switching valve SV3 is powered on and opened. The gas in the gas storage tank 12 can be transported to the first switching valve SV1 through the booster pump assembly after being pressurized through the dryer assembly 6. After the first switching valve SV1 is powered on and opened, the high-pressure gas enters the automotive air suspension module A, causing the front axle or the rear axle or both axles to rise, increasing the body height. At the same time, the system pressure is monitored in real time through the pressure detection unit 14. Generally, air springs are installed on all four wheels of the automotive air suspension module A. Inflating the air springs can raise the vehicle body, and exhausting the air springs can lower the body. Each air spring is equipped with a switching solenoid valve to control the opening and closing of the air spring;

[0070] As Figure 14 As shown in the figure, the external gas inflates the automotive air suspension module A: The compressor assembly 20 is started. The gas in the atmosphere is pressurized by the booster pump assembly and then transported to the switching valve assembly 15 through the dryer assembly 6. By opening the first switching valve SV1, the high-pressure gas enters the automotive air suspension module A, causing the front axle or the rear axle or both axles to rise, increasing the body height. At the same time, the system pressure is monitored in real time through the pressure detection unit 14. The automotive air suspension module A can be directly controlled using the external air without using the gas in the gas storage tank 12;

[0071] As Figure 15 As shown in the figure, the gas in the automotive air suspension module A is backfilled into the gas storage tank: The compressor assembly 20 is started. The second switching valve SV2 is powered on and opened. The automotive air suspension module A is opened. The gas in the automotive air suspension module A is pressurized by the booster pump assembly and then transported to the fourth switching valve SV4 through the dryer assembly 6. After the fourth switching valve SV4 is powered on and opened, the compressed gas is temporarily stored in the gas storage tank 12. At the same time, the system pressure is monitored in real time through the pressure detection unit 14 to achieve a decrease in the vehicle body height;

[0072] As Figure 16As shown in the figure, the air storage tank pressure test: The compressor assembly 20 does not need to be started. By turning on the first switching valve SV1, the third switching valve SV3, and the fourth switching valve SV4, the gas pressure in the air storage tank 12 can be measured, and air can be supplemented or discharged according to the measurement results.

[0073] As Figure 17 shown in the figure, the pressure balance between the air storage tank and the vehicle air suspension module A: The compressor assembly 20 does not need to be started. When the air pressure in either the air storage tank 12 or the vehicle air suspension module A is greater than the other, the first switching valve SV1, the third switching valve SV3, and the fourth switching valve SV4 are opened, and the opening and closing of the air spring solenoid valves on the corresponding wheels in the vehicle air suspension module A are controlled to balance the pressure between the vehicle air suspension module A and the air storage tank 12, and the pressure before and after the compressor assembly 20 is balanced, so as to reduce the torque when the motor starts. At the same time, the vehicle body height can be adjusted by using the connected gas, saving energy consumption.

[0074] As Figure 18 shown in the figure, desiccant regeneration: The compressor assembly 20 does not need to be started. The first switching valve SV1, the fourth switching valve SV4, and the exhaust valve EV are opened, and the gas in the air storage tank 12 blows out the moisture in the desiccant of the dryer assembly 6, and at the same time, the system pressure is monitored in real time by the air pressure detection unit 14.

[0075] As Figure 19 shown in the figure, emergency air release: The compressor assembly 20 does not need to be started. The air spring solenoid valves on the corresponding wheels in the vehicle air suspension module A are opened, and the exhaust valve EV is opened. The gas in the air spring passes through the compressor assembly 20 and then is discharged through the exhaust valve EV to release excessive pressure, and the vehicle height can also be quickly adjusted downward.

[0076] As Figure 20 shown in the figure, overpressure protection: All the switching valve assemblies 15 are closed, and the power limiting valve 13 is connected to the intake end and the outlet end of the booster pump assembly through air paths at the same time. The system pressure can be discharged to the outside through the power limiting valve 13 to limit the maximum pressure of the system to protect the entire system.

[0077] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0078] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, for example two, three, etc., unless otherwise specifically and clearly defined.

[0079] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A split-type automotive air supply unit, characterized in that, Comprising a mounting bracket (7) for connection to an automobile, a compressor assembly (20) is mounted on the mounting bracket (7) through a vibration damping mounting assembly. The compressor assembly (20) includes an integrated valve body (9) and an ECU assembly (8) disposed on one side of the integrated valve body (9). A booster pump assembly and a switching valve assembly (15) are mounted on the integrated valve body (9). A drive motor (10) matching the booster pump assembly is mounted on one side of the integrated valve body (9). An intake pipe (2) and an exhaust pipe (3) are connected to the integrated valve body (9). The integrated valve body (9) is connected to a dryer assembly (6) through an air pipe to form a loop. The dryer assembly (6) is separately disposed from the compressor assembly (20). The switching valve assembly (15) includes an exhaust valve (EV) connected to the exhaust pipe (3), a first switching valve (SV1) and a second switching valve (SV2) connected to the air circuit of the automobile air suspension module (A), a fourth switching valve (SV4) disposed on the air circuit between the dryer assembly (6) and the air storage tank (12), and a third switching valve (SV3) disposed on the air circuit between the air storage tank (12) and the intake end of the compressor assembly (20). The first switching valve (SV1) and the second switching valve (SV2) are further connected to the dryer assembly (6) and the intake end of the compressor assembly (20) through an air circuit. A pressure detection unit (14) is disposed on the air circuit between the first switching valve (SV1) and the automobile air suspension module (A).

2. The split-type automotive air supply unit according to claim 1, characterized in that: The dryer assembly (6) includes a drying tank body and a drying tank mounting bracket (61) mounted on one side of the drying tank body. The drying tank mounting bracket (61) is connected to the automobile through a vibration damping bushing assembly (25).

3. The split-type vehicle air supply unit according to claim 1, wherein: The first switching valve (SV1) is further connected to a manual exhaust component (11) through an air circuit.

4. The split-type vehicle air supply unit according to claim 1, wherein: The switching valve assembly (15) further includes a power limiting valve (13). The power limiting valve (13) is connected to both the intake end and the outlet end of the booster pump assembly through an air circuit.

5. The split-type vehicle air supply unit according to claim 1, wherein: The vibration damping mounting assembly includes a first vibration damping pad (26) disposed on one side of the mounting bracket (7). A second vibration damping pad (23) is disposed on the other side of the mounting bracket (7). A first bracket backing plate (22) is disposed outside the first vibration damping pad (26). A second bracket backing plate (27) is connected to the outside of the second vibration damping pad (23). A plurality of bracket springs (29) are disposed between the first vibration damping pad (26) and the first bracket backing plate (22). A plurality of bracket bolts (24) are mounted on the mounting bracket (7) and sequentially pass through the first bracket backing plate (22), the first vibration damping pad (26), the mounting bracket (7), the second vibration damping pad (23), and the second bracket backing plate (27). A plurality of vibration damping bushing assemblies (25) are disposed at the edge position of the mounting bracket (7).

6. The split-type vehicle air supply unit according to claim 5, characterized in that: A spring seat (210) is installed at a position on the inner side of the first support backing plate (22) corresponding to the support spring (29), and the support spring (29) is arranged between the spring seat (210) and the first damping pad (26).

7. The split-type vehicle air supply unit according to claim 6, wherein: The spring seat (210) is connected to the first support backing plate (22) by passing a first snap post (215) through the first support backing plate (22), and the second damping pad (23) is connected to the second support backing plate (27) by passing a plurality of second snap posts (214) through the second support backing plate (27).

8. The split-type vehicle air supply unit according to claim 1, characterized in that: An air inlet hole seat (110) and an air outlet hole seat (117) are arranged side by side on the air inlet and outlet mounting seat (1). The upper ends of the air inlet hole seat (110) and the air outlet hole seat (117) are inserted with air pipe nozzles (111), and corresponding air pipe nozzles (111) are respectively connected with an air inlet pipe (2) and an air outlet pipe (3). The air inlet pipe (2) and the air outlet pipe (3) extend outwards and are combined into a composite air inlet and outlet pipe (4). A filter (5) is installed at a position between the air inlet pipe (2) and the composite air inlet and outlet pipe (4).

9. The split-type vehicle air supply unit according to claim 5, wherein: A buckle strip (114) is arranged along the axial direction on one side of the air pipe nozzle (111). A limit hook (116) at one end of the buckle strip (114) is buckled with a buckle groove (118) on the outside of the air inlet hole seat (110) or the air outlet hole seat (117). A pressing part (115) is arranged at the other end of the buckle strip (114). When the pressing part (115) is pressed inwards, the limit hook (116) is disengaged from the buckle groove (118).

10. A control method for a split-type vehicle air supply unit according to any one of claims 1-9, characterized in that, Including the following working modes: Inflating the gas storage tank with external gas: The compressor assembly (20) is started, the driving motor (10) drives the booster pump assembly to operate, the air in the atmosphere is pressurized by the booster pump assembly and then transported to the switching valve assembly (15) through the dryer assembly (6). The fourth switching valve (SV4) is powered on and opened to store the gas in the gas storage tank (12). At the same time, the first switching valve (SV1) is powered on and opened, and the pressure in the gas storage tank (12) is monitored in real time by the air pressure detection unit (14). Inflating the vehicle air suspension module (A) with the gas storage tank: The compressor assembly (20) is started. The third switching valve (SV3) is powered on and opened, and the gas in the gas storage tank (12) can be transported to the first switching valve (SV1) through the booster pump assembly and the dryer assembly (6) after being pressurized. After the first switching valve (SV1) is powered on and opened, the high-pressure gas enters the vehicle air suspension module (A) to raise the front axle or the rear axle or both axles, increasing the vehicle body height. At the same time, the system pressure is monitored in real time by the air pressure detection unit (14). Inflating the automotive air suspension module (A) with external gas: The compressor assembly (20) is started, and the gas in the atmosphere is pressurized by the booster pump assembly and then delivered to the switching valve assembly (15) through the dryer assembly (6). By opening the first switching valve (SV1), the high-pressure gas enters the automotive air suspension module (A), causing the front axle or rear axle or both axles to rise, increasing the body height. At the same time, the system pressure is monitored in real-time by the air pressure detection unit (14). Gas backfilling the air storage tank from the automotive air suspension module (A): The compressor assembly (20) is started, the second switching valve (SV2) is powered on and opened, the automotive air suspension module (A) is opened, and the gas in the automotive air suspension module (A) is pressurized by the booster pump assembly and then delivered to the fourth switching valve (SV4) through the dryer assembly (6). After the fourth switching valve (SV4) is powered on and opened, the compressed gas is temporarily stored in the air storage tank (12). At the same time, the system pressure is monitored in real-time by the air pressure detection unit (14). Air storage tank pressure test: The compressor assembly (20) does not need to be started. By powering on and opening the first switching valve (SV1), the third switching valve (SV3), and the fourth switching valve (SV4), the gas pressure in the air storage tank (12) can be measured. Pressure balance between the air storage tank and the automotive air suspension module (A): The compressor assembly (20) does not need to be started. When the air pressure in either the air storage tank (12) or the automotive air suspension module (A) is greater than the other, the first switching valve (SV1), the third switching valve (SV3), and the fourth switching valve (SV4) are opened, and the opening and closing of the air spring solenoid valves on the corresponding wheels in the automotive air suspension module (A) are controlled to balance the pressure between the automotive air suspension module (A) and the air storage tank (12). Desiccant regeneration: The compressor assembly (20) does not need to be started. The first switching valve (SV1), the fourth switching valve (SV4), and the exhaust valve (EV) are opened, and the gas in the air storage tank (12) blows out the moisture in the desiccant of the dryer assembly (6). At the same time, the system pressure is monitored in real-time by the air pressure detection unit (14). Emergency deflation: The compressor assembly (20) does not need to be started. The air spring solenoid valves on the corresponding wheels in the automotive air suspension module (A) are opened, and the exhaust valve (EV) is opened. The gas in the air spring passes through the compressor assembly (20) and then is discharged through the exhaust valve (EV) to relieve excessive pressure. Overpressure protection: All the switching valve assemblies (15) are closed, and the power limiting valve (13) is connected to both the intake end and the outlet end of the booster pump assembly through air circuits. The system pressure can be discharged to the outside through the power limiting valve (13) to limit the maximum pressure of the system to protect the entire system.

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