A vehicle-mounted gas source management system capable of simultaneously supplying high-pressure and low-pressure gas and a control method thereof

Abstract

The application relates to the technical field of vehicle-mounted gas, in particular to a vehicle-mounted gas source management system capable of simultaneously supplying high-pressure and low-pressure gas and a control method. The vehicle-mounted gas source management system comprises a low-pressure gas unit, a high-pressure gas unit, a low-pressure compression unit, a high-pressure compression unit, a low-pressure loop and a control valve module. The air inlet end of the low-pressure compression unit is communicated with an external gas source. The low-pressure compression unit is communicated with the low-pressure gas unit to realize low-pressure gas supply. The application realizes primary compression of normal-pressure gas through the low-pressure compression unit to form low-pressure gas, meets the low-pressure gas demand in a vehicle, simultaneously sends part of the low-pressure gas to the high-pressure compression unit through the low-pressure loop to realize secondary compression and form high-pressure gas, meets the high-pressure gas demand, can realize simultaneous supply of high-pressure and low-pressure gas, and meets the use demand of the vehicle-mounted system on the high-pressure and low-pressure gas.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted gas technology, and in particular to a vehicle-mounted gas source management system and control method capable of supplying gas at both high and low pressures simultaneously. Background Technology

[0002] With the continuous development of vehicle technology, there are a large demand for high-pressure air and low-pressure air during the operation of the vehicle. High-pressure air sources are mostly used in vehicle braking systems, air suspension height adjustment and other operating conditions; low-pressure air sources are used in scenarios such as seat airbag massage, cab dust removal and blowing, and small pneumatic auxiliary components.

[0003] Existing air source processing units can typically only output compressed gas at a single pressure level at any given time, and cannot stably supply both high-pressure and low-pressure air sources simultaneously. The vehicle's pneumatic system can only switch between high and low pressure air supply modes according to preset logic, achieving sequential and time-sharing supply of high and low pressure air sources. During actual vehicle driving and operation, core safety conditions such as high-pressure braking and suspension adjustment often overlap with and are triggered synchronously with low-pressure auxiliary air use conditions inside the vehicle. The time-sharing air supply mechanism of existing air source management systems cannot meet the synchronous air use needs of multiple scenarios, affecting the driving experience and the operational stability of auxiliary equipment, and is difficult to adapt to the multi-dimensional and complex pneumatic usage needs of modern vehicles. Summary of the Invention

[0004] To address the problem that existing vehicle-mounted gas supply management systems can only supply high and low pressure gas sequentially and cannot output high and low pressure gas sources synchronously, this application provides a vehicle-mounted gas supply management system and control method that can supply high and low pressure gas simultaneously.

[0005] The first objective of this invention is achieved through the following technical solution: A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas includes a low-pressure gas consumption unit, a high-pressure gas consumption unit, a low-pressure compression unit, a high-pressure compression unit, a low-pressure circuit, and a control valve module. The inlet of the low-pressure compression unit is connected to an external gas source, and the low-pressure compression unit is connected to the low-pressure gas consumption unit to achieve low-pressure gas supply. The high-pressure compression unit is connected to the high-pressure gas consumption unit to achieve high-pressure gas supply. One end of the low-pressure circuit is connected to the gas passage between the low-pressure compression unit and the low-pressure gas consumption unit, and the other end is connected to the inlet of the high-pressure compression unit to allow the high-pressure gas after secondary pressurization to enter the high-pressure compression unit. The control valve module is located at the inlet and outlet of the high-pressure compression unit and the inlet and outlet of the low-pressure compression unit.

[0006] By adopting the above technical solution, the low-pressure compression unit compresses the external air source into low-pressure gas. Part of the gas is directly supplied to the low-pressure gas consumption unit to meet the vehicle's low-pressure gas consumption needs. The other part enters the high-pressure compression unit through the low-pressure circuit for secondary pressurization, forming high-pressure gas, which is then supplied to the high-pressure gas consumption unit to meet the vehicle's high-pressure gas consumption needs. The low-pressure compression unit and the high-pressure compression unit can work independently at the same time. Combined with the coordinated control of the low-pressure circuit and the control valve module, the simultaneous supply of high and low-pressure gas can be achieved, meeting the vehicle's synchronous demand for high and low-pressure gas during driving.

[0007] Optionally, the low-pressure compression unit includes a first compression device. The outlet of the first compression device is connected to the low-pressure gas-consuming unit to achieve low-pressure gas supply and to the low-pressure circuit to deliver a portion of the low-pressure gas to the high-pressure compression unit for secondary pressurization. The high-pressure compression unit includes a second compression device. The inlet of the second compression device is connected to the low-pressure circuit to receive a portion of the low-pressure gas from the first compression device, and the outlet of the second compression device is connected to the high-pressure gas-consuming unit to achieve high-pressure gas supply. The first compression device and the second compression device are not connected to each other. The control valve module includes a first control valve group and a second control valve group. The first control valve group is disposed at the inlet and outlet of the first compression device to control the gas path of the first compression device. The second control valve group is disposed at the inlet and outlet of the second compression device to control the gas path of the second compression device.

[0008] By adopting the above technical solution, the first compression device compresses low-pressure gas, and the first control valve group controls the opening and closing of the gas path of the first compression device. The second compression device compresses high-pressure gas, and the second control valve group controls the opening and closing of the gas path of the second compression device. The first compression device and the second compression device are not connected to each other and work independently. They can achieve low-pressure gas supply or high-pressure gas supply separately, or they can work simultaneously to achieve high and low pressure synchronous gas supply, and can flexibly switch according to the actual gas demand of the vehicle.

[0009] Optionally, the low-pressure compression unit includes a first compression device, the high-pressure compression unit includes a second compression device, a connecting air passage is provided between the low-pressure compression unit and the high-pressure compression unit, the control valve module includes a third control valve group, the sum of the number of the first compression device and the second compression device is greater than or equal to three, the number of the first compression device is multiple, the number of the second compression device is one, a first air passage is provided between the multiple first compression devices, and the third control valve group is provided on the first air passage to control the opening and closing of the inlet and outlet air passages between each of the first compression devices, and is provided on the connecting air passage to control the opening and closing of the inlet and outlet air passages between the second compression device and one of the first compression devices.

[0010] By adopting the above technical solution, the number of second compression devices is one, ensuring a stable supply of high-pressure gas. The number of first compression devices is multiple. By controlling the third control valve group, the number of first compression devices participating in gas compression in the low-pressure compression unit can be changed, thereby changing the output of low-pressure gas to adapt to the low-pressure gas demand under different working conditions. When the low-pressure gas demand is small, only some of the first compression devices can be activated to reduce energy consumption; when the low-pressure gas demand increases, all of the first compression devices can be activated to increase the output of low-pressure gas.

[0011] Optionally, the low-pressure compression unit includes a first compression device, the high-pressure compression unit includes a second compression device, a connecting air passage is provided between the low-pressure compression unit and the high-pressure compression unit, the control valve module includes a third control valve group, the sum of the number of the first compression device and the second compression device is greater than or equal to three, the number of the first compression device is one, the number of the second compression devices is multiple, a second air passage is provided between the multiple second compression devices, the third control valve group is provided on the second air passage to control the opening and closing of the inlet and outlet air passages between each second compression device, and is provided on the connecting air passage to control the opening and closing of the inlet and outlet air passages between the first compression device and one of the second compression devices.

[0012] By adopting the above technical solution, the number of first compression devices is one, which can ensure a stable supply of low-pressure gas. The number of second compression devices is multiple. By controlling the third control valve group, the number of second compression devices participating in gas compression in the high-pressure compression unit can be changed, thereby changing the output of high-pressure gas to adapt to the high-pressure gas demand under different working conditions. When the high-pressure gas demand is small, some second compression devices can be selectively activated. When the high-pressure gas demand increases, all second compression devices can be activated to increase the output of high-pressure gas.

[0013] Optionally, the low-pressure compression unit includes a first compression device, the high-pressure compression unit includes a second compression device, a connecting air passage is provided between the low-pressure compression unit and the high-pressure compression unit, the control valve module includes a third control valve group, the number of the first compression device and the number of the second compression device are both greater than one, a third air passage is provided between the multiple first compression devices, a fourth air passage is provided between the multiple second compression devices, the third control valve group is provided on the third air passage to control the on / off of the inlet and outlet air passages between each of the first compression devices, is provided on the fourth air passage to control the on / off of the inlet and outlet air passages between each of the second compression devices, and is provided on the connecting air passages to control the on / off of the inlet and outlet air passages between one of the first compression devices and one of the second compression devices.

[0014] By adopting the above technical solution, the number of both the first and second compression devices is greater than one. By controlling the third control valve group, the number of the first compression devices participating in gas compression in the low-pressure compression unit and the number of the second compression devices participating in gas compression in the high-pressure compression unit can be flexibly adjusted. This allows for more precise adjustment of the gas output when both low-pressure and high-pressure gas demand change, in order to adapt to varying operating conditions and improve the energy efficiency of the vehicle.

[0015] Optionally, the vehicle-mounted gas source management system further includes a gas distribution component, which includes a gas distribution chamber. The inlet of the gas distribution chamber is connected to the low-pressure compression unit, and the outlet of the gas distribution chamber is connected to the low-pressure gas consumption unit and the low-pressure circuit via a T-junction.

[0016] By adopting the above technical solution, the gas distribution chamber splits the gas output from the low-pressure compression unit. One part is directly supplied to the low-pressure gas-consuming unit, and the other part enters the high-pressure compression unit through the low-pressure circuit, realizing the independent distribution and supply of the two gas streams and ensuring a stable supply of high and low-pressure gas.

[0017] Optionally, the gas distribution assembly further includes an inlet distribution valve, a first outlet distribution valve, and a second outlet distribution valve. Multiple gas distribution chambers are provided and arranged in parallel. The inlet distribution valve is located at the inlet end of each gas distribution chamber. The first outlet distribution valve is located on the gas path between the outlet end of each gas distribution chamber and the low-pressure circuit. The second outlet distribution valve is located on the gas path between the outlet end of each gas distribution chamber and the low-pressure gas-using unit. The first outlet distribution valve and the second outlet distribution valve at the same gas distribution chamber cooperate to control the amount of low-pressure gas distributed by the gas distribution assembly to the low-pressure circuit.

[0018] By adopting the above technical solution, for one of the gas distribution chambers, opening the inlet distribution valve of the gas distribution chamber allows low-pressure gas to enter the gas distribution chamber. Opening the first outlet distribution valve and closing the second outlet distribution valve allows the low-pressure gas to enter the low-pressure circuit and be delivered to the high-pressure compression unit. Opening the second outlet distribution valve and closing the first outlet distribution valve allows the low-pressure gas to be supplied to the low-pressure gas consumption unit. By selectively opening and closing the first and second outlet distribution valves, the gas distribution ratio from the gas distribution chamber to the low-pressure circuit and the low-pressure gas consumption unit can be flexibly adjusted, allowing for more refined adjustment of the supply of high and low-pressure gas. This meets different gas consumption needs while minimizing gas waste.

[0019] Optionally, the vehicle-mounted air source management system further includes a drying tank and a backflush assembly. One end of the drying tank is connected to the outlet of the high-pressure compression unit and the other end is connected to the high-pressure air consumption unit. The backflush assembly includes a backflush air passage and a high-pressure storage tank. One end of the backflush air passage is connected to the high-pressure storage tank and the other end is connected to the backflush inlet of the drying tank. The high-pressure storage tank blows dry gas into the drying tank through the backflush air passage. The backflush outlet of the drying tank is connected to the atmosphere to discharge the gas that has absorbed moisture from the drying tank.

[0020] By adopting the above technical solution, after the desiccant in the drying tank has adsorbed moisture to a saturated state, the high-pressure storage tank is opened, and high-pressure drying gas enters the drying tank through the back-flushing gas path to purge the desiccant in the reverse direction, carrying the adsorbed moisture out of the drying tank and discharging it into the atmosphere, thereby restoring the adsorption capacity of the desiccant, realizing the regeneration and recycling of the drying tank, and reducing the replacement frequency of the drying tank.

[0021] Optionally, the vehicle-mounted air source management system further includes a reflux control valve, which is disposed on the low-pressure circuit to control the on / off state of the low-pressure circuit.

[0022] By adopting the above technical solution, when the system does not require high-pressure gas, the low-pressure circuit can be cut off by closing the reflux control valve, avoiding unnecessary entry of low-pressure gas into the high-pressure compression unit, and all low-pressure gas can be supplied to the low-pressure gas consumption unit, thereby improving gas utilization.

[0023] The second objective of this invention is achieved through the following technical solution: A control method for simultaneous high and low pressure gas supply, using the aforementioned vehicle-mounted gas source management system to control high and low pressure gas supply, includes the following steps: S1: An external gas source delivers gas to the first compression device of the low-pressure compression unit. Based on the demand for low-pressure gas and high-pressure gas, the control valve module is selectively opened and closed to dynamically allocate the number of the first compression devices in the low-pressure compression unit and the number of the second compression devices in the high-pressure compression unit; S2: After the first compression device compresses the gas to a low-pressure set value, it delivers it to the gas distribution component. Based on the demand of the low-pressure gas user unit and the high-pressure gas user unit, the gas distribution component distributes a portion of the low-pressure gas to the low-pressure gas user unit, and another portion of the low-pressure gas is delivered to the high-pressure compression unit through the low-pressure circuit. The second compression device of the high-pressure compression unit performs secondary pressurization on the low-pressure gas to form high-pressure gas, which is then delivered to the high-pressure gas user unit.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. After the low-pressure compression unit compresses the external air source into low-pressure gas, part of it is directly supplied to the low-pressure gas consumption unit to meet the low-pressure gas consumption needs of the vehicle. The other part enters the high-pressure compression unit through the low-pressure circuit for secondary pressurization to form high-pressure gas, which is then supplied to the high-pressure gas consumption unit to meet the high-pressure gas consumption needs of the vehicle. The low-pressure compression unit and the high-pressure compression unit can work independently at the same time. Combined with the coordinated control of the low-pressure circuit and the control valve module, the high and low pressure gases are supplied at the same time to meet the synchronous needs of the vehicle for high and low pressure gases during driving. 2. The first compression device compresses low-pressure gas, and the first control valve group controls the opening and closing of the gas path of the first compression device. The second compression device compresses high-pressure gas, and the second control valve group controls the opening and closing of the gas path of the second compression device. The first compression device and the second compression device are not connected to each other and work independently. They can achieve separate low-pressure gas supply or separate high-pressure gas supply, or they can work simultaneously to achieve high and low pressure synchronous gas supply. They can be flexibly switched according to the actual gas demand of the vehicle. 3. By selectively opening and closing the first and second gas distribution valves, the gas distribution ratio from the gas distribution chamber to the low-pressure circuit and low-pressure gas consumption unit can be flexibly adjusted, allowing for more precise control of the supply of high and low-pressure gas, thus minimizing gas waste while meeting different gas consumption needs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the air path in Embodiment 1 of this application, used to illustrate the overall air path of the vehicle air source management system; Figure 2 This is a partial air circuit diagram of Embodiment 1 of this application, used to illustrate the different layouts of control valves and air circuits in the low-pressure compression unit and the high-pressure compression unit; Figure 3 This is a schematic diagram of the air path between the low-pressure compression unit and the high-pressure compression unit in Embodiment 2 of this application. Figure 1 This is used to demonstrate the different layouts of control valves and air passages in the low-pressure compression unit and the high-pressure compression unit; Figure 4 This is a schematic diagram of the air path between the low-pressure compression unit and the high-pressure compression unit in Embodiment 2 of this application. Figure 2 This is used to demonstrate the different layouts of control valves and air passages in the low-pressure compression unit and the high-pressure compression unit; Figure 5 This is a schematic diagram of the air path between the low-pressure compression unit and the high-pressure compression unit in Embodiment 2 of this application. Figure 3 This is used to demonstrate the different layouts of control valves and air passages in the low-pressure compression unit and the high-pressure compression unit; Figure 6 This is a schematic diagram of the air circuits of the low-pressure compression unit and the high-pressure compression unit in Embodiment 3 of this application, used to show the different layouts of the control valves and air circuits in the low-pressure compression unit and the high-pressure compression unit; Figure 7 This is a schematic diagram of the gas distribution assembly in Embodiment 4 of this application, used to illustrate the distribution valve and gas path layout in the gas distribution assembly.

[0026] Reference numerals: 1. Low-pressure gas unit; 111. Connecting gas path; 2. High-pressure gas unit; 3. Low-pressure compression unit; 311. First compression device; 312. First gas path; 321. Third gas path; 4. High-pressure compression unit; 411. Second compression device; 412. Second gas path; 421. Fourth gas path; 5. Low-pressure circuit; 6. Control valve module; 611. First control valve group; 612. First inlet valve; 613. First outlet valve; 621. Second control valve group; 622. Second intake valve; 623. Second outlet valve; 631. Third control valve assembly; 632. Third intake valve; 633. Third outlet valve; 7. Gas distribution assembly; 711. Gas distribution chamber; 721. Intake distribution valve; 722. First outlet distribution valve; 723. Second outlet distribution valve; 8. Reflux control valve; 9. Drying tank; 10. Backflush assembly; 101. Backflush air path; 102. High-pressure storage tank; 103. First backflush valve; 104. Second backflush valve. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0028] Example 1: A vehicle-mounted gas supply management system capable of simultaneously supplying high and low pressure gas, referenced Figure 1 and Figure 2The vehicle air supply management system includes a low-pressure gas supply unit 1 and a high-pressure gas supply unit 2. Low-pressure gas supply unit 1 is the component in the vehicle requiring low-pressure gas, and high-pressure gas supply unit 2 is the component in the vehicle requiring high-pressure gas. The system also includes a low-pressure compression unit 3, a high-pressure compression unit 4, a low-pressure circuit 5, and a control valve module 6. The inlet of low-pressure compression unit 3 is directly connected to an external gas source, performing initial compression of the externally input atmospheric pressure gas to form low-pressure gas. The outlet of low-pressure compression unit 3 is divided into two paths: one path connects to low-pressure gas supply unit 1, supplying a portion of the low-pressure gas to meet the vehicle's low-pressure gas requirements; the other path connects to low-pressure circuit 5, through which a portion of the low-pressure gas is transported to high-pressure compression unit 4. The inlet of high-pressure compression unit 4 is connected to low-pressure circuit 5, receiving low-pressure gas and performing secondary compression to form high-pressure gas. The outlet of the high-pressure compression unit 4 is connected to the high-pressure gas consumption unit 2, which supplies high-pressure gas to the high-pressure gas consumption unit 2 to meet the high-pressure gas consumption needs of the vehicle. The control valve module 6 is located at the inlet and outlet of the high-pressure compression unit 4 and the inlet and outlet of the low-pressure compression unit 3, and is used to control the opening and closing of the inlet and outlet of the high-pressure compression unit 4 and the low-pressure compression unit 3. The control valve module 6 is also located between the high-pressure compression unit 4 and the low-pressure compression unit 3 to control the opening and closing of the gas path between the high-pressure compression unit 4 and the low-pressure compression unit 3. In this application, the low-pressure compression unit 3 performs initial compression of atmospheric pressure gas to form low-pressure gas, which meets the low-pressure gas consumption needs of the vehicle. At the same time, a portion of the low-pressure gas is transported to the high-pressure compression unit 4 through the low-pressure circuit 5 for secondary compression to form high-pressure gas, which meets the high-pressure gas consumption needs. This allows for the simultaneous supply of high and low-pressure gas, meeting the vehicle's demand for high and low-pressure gas and greatly simplifying the structure of the vehicle gas source management system.

[0029] refer to Figure 1 and Figure 2In this embodiment, the low-pressure gas supply unit 1 includes low-pressure gas supply components such as radar cleaning, camera cleaning, simulated exhaust flame, side wing support, seat massage, and oxygen generator. Excess low-pressure gas can be discharged externally, and the system is equipped with an independent external discharge control valve. The high-pressure gas supply unit 2 includes high-pressure gas supply components such as air springs and brake suspension. Each low-pressure gas supply component is equipped with an independent low-pressure control valve to control the gas path opening and closing, and an independent pressure reducing valve to control the low-pressure gas pressure. Each high-pressure gas supply component is equipped with an independent high-pressure control valve to control the gas path opening and closing. Before entering the low-pressure compression unit 3, the external gas source is also equipped with an air filter to filter impurities in the external gas and ensure the cleanliness of the gas entering the system. A gas distribution component 7 and a low-pressure sensor are installed on the gas path from the low-pressure compression unit 3 to the low-pressure gas consumption unit 1. The gas distribution component 7 is used to store low-pressure gas, and the low-pressure sensor is used to monitor the low-pressure gas pressure on the gas path from the gas distribution component 7 to the low-pressure gas consumption unit 1 in real time. A high-pressure sensor is installed on the gas path to the high-pressure gas consumption unit 2 to monitor the high-pressure gas pressure entering the high-pressure gas consumption unit 2 in real time, so as to ensure that the high and low pressure gas pressures are stable within a safe range.

[0030] refer to Figure 1 and Figure 2 The low-pressure compression unit 3 includes a first compression device 311, which is a piston compressor. The inlet of the first compression device 311 is directly connected to an external air source to complete the initial compression of the normal pressure gas. The outlet of the first compression device 311 is connected to the low-pressure gas consumption unit 1 and the low-pressure circuit 5 respectively. Part of the compressed low-pressure gas is supplied to the low-pressure gas consumption unit 1, and the other part is transported to the high-pressure compression unit 4 through the low-pressure circuit 5.

[0031] refer to Figure 1 and Figure 2 The high-pressure compression unit 4 includes a second compression device 411, which also adopts a piston compressor. The inlet of the second compression device 411 is connected to the low-pressure circuit 5, receives part of the low-pressure gas formed by the first compression device 311, and performs secondary compression to form high-pressure gas. The outlet of the second compression device 411 is connected to the high-pressure gas consumption unit 2, and the pressurized high-pressure gas is supplied to the high-pressure gas consumption unit 2 to achieve simultaneous supply of high and low-pressure gas.

[0032] refer to Figure 1 and Figure 2In this embodiment, the control valve module 6 includes a first control valve group 611 and a second control valve group 621. The first control valve group 611 includes a first intake valve 612 and a first outlet valve 613. The first intake valve 612 is located at the intake end of the first compression device 311, and the first outlet valve 613 is located at the outlet end of the first compression device 311. The first intake valve 612 and the first outlet valve 613 cooperate to control the air passage opening and closing of the first compression device 311. Similarly, the second control valve group 621 includes a second intake valve 622 and a second outlet valve 623. The second intake valve 622 is located at the intake end of the second compression device 411, and the second outlet valve 623 is located at the outlet end of the second compression device 411. At the outlet of the compression device 411, the second inlet valve 622 and the second outlet valve 623 work together to control the opening and closing of the air passage of the second compression device 411. Through the independent control of the first control valve group 611 and the second control valve group 621, the opening and closing of the air passage of the low-pressure compression unit 3 and the high-pressure compression unit 4 can be switched. This can achieve three gas supply needs: simultaneous supply of high and low pressure, or separate supply of low pressure or separate supply of high pressure. In this embodiment, the low-pressure gas output of the low-pressure compression unit 3 is the sum of the outputs of the five first compression devices 311, and the high-pressure gas output of the high-pressure compression unit 4 is the output of one second compression device 411.

[0033] refer to Figure 1 and Figure 2 The vehicle-mounted gas source management system also includes a return control valve 8, which is located on the low-pressure circuit 5. When the return control valve 8 is opened, the low-pressure gas flows back through the low-pressure circuit 5 to the inlet of the high-pressure compression unit 4. The high-pressure compression unit 4 performs secondary compression on the return gas to form high-pressure gas for use by the high-pressure gas consumption unit 2. If high-pressure gas is not needed, the return control valve 8 is closed, so that all the low-pressure gas is supplied to the low-pressure gas consumption unit 1.

[0034] refer to Figure 1 and Figure 2 The vehicle-mounted gas source management system also includes a drying tank 9 and a backflushing assembly 10. One end of the drying tank 9 is connected to the outlet of the high-pressure compression unit 4 and the other end is connected to the high-pressure gas consumption unit 2. The gas entering the high-pressure gas consumption unit 2 is first dried by the molecular sieve desiccant in the drying tank 9 to remove moisture and impurities, ensuring that the quality of the high-pressure gas meets the usage requirements of the gas consumption components.

[0035] refer to Figure 1 and Figure 2The backflush assembly 10 includes a backflush air passage 101, a high-pressure storage tank 102, a first backflush valve 103, and a second backflush valve 104. One end of the backflush air passage 101 is connected to the high-pressure storage tank 102, and the other end is connected to the backflush inlet of the drying tank 9. The first backflush valve 103 is disposed on the backflush air passage 101 between the high-pressure storage tank 102 and the drying tank 9, and is used to control the flow of high-pressure gas from the high-pressure storage tank 102 to the drying tank 9. The second backflush valve 104 is disposed at the backflush outlet of the drying tank 9. In the gas path connected to the atmosphere, the discharge of backflush exhaust gas is controlled. When the molecular sieve desiccant in the dryer 9 is saturated, the first backflush valve 103 and the second backflush valve 104 are opened. The high-pressure gas in the high-pressure storage tank 102 enters the dryer 9 through the backflush gas path 101, backflushing the desiccant in the dryer 9, carrying out the adsorbed moisture, and discharging it to the atmosphere through the second backflush valve 104. This extends the service life of the desiccant, reduces the replacement frequency of the dryer 9, and ensures the long-term stable operation of the vehicle air source system.

[0036] The implementation principle of Embodiment 1 of this application is as follows: When the vehicle air source management system is working, the ambient atmospheric pressure gas first passes through the air filter to remove impurities and is then sent to the first compression device 311 of the low-pressure compression unit 3. The first compression device 311 completes the first stage of compression to generate low-pressure gas. The low-pressure gas is then transported to the gas distribution component 7 for temporary storage. Subsequently, the low-pressure gas is divided into two paths. One path directly supplies various low-pressure gas-using units 1 such as radar cleaning and seat massage. Each low-pressure gas-using component relies on an independent low-pressure control valve and a pressure reducing valve to realize the gas supply on / off and pressure regulation. Excess low-pressure gas can be discharged to the outside through the external discharge control valve. The other path of low-pressure gas passes through the air distribution component 7 for temporary storage. The gas is supplied from the low-pressure circuit 5 to the high-pressure compression unit 4. The return control valve 8 controls the opening and closing of the low-pressure circuit 5. When the return control valve 8 is closed, all the low-pressure gas is supplied to the low-pressure gas-using unit 1. When the return control valve 8 is opened, the low-pressure gas is sent to the second compression device 411. The second compression device 411 performs secondary compression to obtain high-pressure gas. The high-pressure gas flows through the drying tank 9 and removes water vapor impurities by passing through the molecular sieve desiccant. The high-pressure sensor monitors the gas pressure on the high-pressure side in real time. The cleaned high-pressure gas is delivered to the high-pressure gas-using unit 2, such as the air spring and brake suspension. Each high-pressure gas-using component controls the gas supply through an independent high-pressure control valve.

[0037] The first control valve group 611 controls the inlet and outlet air passages of the first compression unit 311, and the second control valve group 621 controls the inlet and outlet air passages of the second compression unit 411. Together with the return control valve 8 on the low-pressure circuit 5, they realize the switching between three operating conditions: independent low-pressure air supply, independent high-pressure air supply, and simultaneous high and low-pressure air supply. The high-pressure gas enters the high-pressure compression unit 4 and first passes through the drying tank 9 for drying. When the molecular sieve in the drying tank 9 reaches saturation with water vapor, the first backflush valve 103 and the second backflush valve 104 are opened. The high-pressure gas in the high-pressure storage tank 102 is reversed and passed into the drying tank 9 along the backflush air passage 101 to purge the desiccant. The desorbed water vapor is discharged into the atmosphere along with the exhaust gas through the second backflush valve 104, continuously ensuring the dryness of the output high-pressure gas.

[0038] Example 2: A vehicle-mounted gas supply management system capable of simultaneously supplying high and low pressure gas, referenced Figure 3 and Figure 4 The difference from Embodiment 1 is that the low-pressure compression unit 3 and the high-pressure compression unit 4 can dynamically allocate the number of the first compression device 311 in the low-pressure compression unit 3 or the second compression device 411 in the high-pressure compression unit 4 to be put into operation according to the actual gas consumption.

[0039] refer to Figure 3 The low-pressure compression unit 3 includes a first compression device 311, which performs initial compression on the atmospheric pressure gas to form a low-pressure gas. The high-pressure compression unit 4 includes a second compression device 411, which performs secondary compression on the low-pressure gas. A connecting gas passage 111 is provided between the low-pressure compression unit 3 and the high-pressure compression unit 4. The sum of the number of the first compression device 311 and the second compression device 411 is greater than or equal to three. There are multiple first compression devices 311. In this embodiment, there are five first compression devices 311 and one second compression device 411. A first air passage 312 is provided between the compression devices 311. The control valve module 6 includes a third control valve group 631, which includes a third inlet valve 632 and a third outlet valve 633. The third inlet valve 632 is located at the inlet end of the first air passage 312, and the third outlet valve 633 is located at the outlet end of the first air passage 312. The third inlet valve 632 is used to control the inlet and outlet of the first air passage 312, and the third outlet valve 633 is used to control the outlet of the first air passage 312. By controlling the opening and closing states of the third inlet valve 632 and the third outlet valve 633 on the first air passage 312, the inlet and outlet air passages between the five first compression devices 311 are regulated.

[0040] refer to Figure 3The third intake valve 632 is located at the intake end of the connecting air passage 111, and the third outlet valve 633 is located at the outlet end of the connecting air passage 111. The third intake valve 632 is used to control the intake of the connecting air passage 111, and the third outlet valve 633 is used to control the outlet of the connecting air passage 111. The third intake valve 632 and the third outlet valve 633 work together to control the opening and closing of the connecting air passage 111, thereby adjusting the opening and closing of the air passage between the second compression device 411 and one of the first compression devices 311, changing the number of first compression devices 311 participating in gas compression in the low-pressure compression unit 3. The number of second compression devices 411 in the high-pressure compression unit 4 is one. While ensuring a stable supply of high-pressure gas, it ensures that the low-pressure compression unit 3 can dynamically allocate the number of first compression devices 311 in operation according to the actual gas consumption, realizing flexible adjustment of the low-pressure gas supply, and taking into account both adaptability and economy.

[0041] refer to Figure 4 The sum of the number of the first compression device 311 and the number of the second compression device 411 is greater than or equal to three. The number of the first compression device 311 is one, and the number of the second compression device 411 is multiple. In this embodiment, the specific number of the second compression device 411 is five. The low-pressure compression unit 3 compresses the normal pressure gas into low-pressure gas through one first compression device 311. The high-pressure compression unit 4 can perform secondary compression on the low-pressure gas through five second compression devices 411 to form high-pressure gas.

[0042] refer to Figure 4 A second air passage 412 is provided between the five second compression devices 411. A third intake valve 632 is located at the intake end of the second air passage 412, and a third outlet valve 633 is located at the outlet end of the second air passage 412. The third intake valve 632 is used to control the intake of the second air passage 412, and the third outlet valve 633 is used to control the outlet of the second air passage 412. The third intake valve 632 and the third outlet valve 633 work together to control the opening and closing of the second air passage 412, thereby regulating the opening and closing of the intake and outlet air passages between the five second compression devices 411. The vehicle can select the number of second compression devices 411 to be put into operation according to the demand for high-pressure air, effectively reducing the energy consumption of the high-pressure compression unit 4.

[0043] refer to Figure 4The third intake valve 632 is located at the intake end of the connecting air passage 111, and the third exhaust valve 633 is located at the exhaust end of the connecting air passage 111. Through the coordinated control of the third intake valve 632 and the third exhaust valve 633, the on / off regulation of the connecting air passage 111 is realized, thereby regulating the on / off of the air passage between the first compression device 311 and one of the second compression devices 411. The number of the first compression device 311 in the low-pressure compression unit 3 is one. While ensuring a stable supply of low-pressure gas, the number of the second compression devices 411 participating in gas compression in the high-pressure compression unit 4 is dynamically allocated according to the actual usage, and the excess second compression devices 411 are shut down, effectively reducing the energy consumption of the vehicle.

[0044] refer to Figure 5 The number of first compression devices 311 and second compression devices 411 is greater than one. In this embodiment, the specific number of first compression devices 311 and second compression devices 411 is three. A third air passage 321 is provided between the three first compression devices 311, and all the first compression devices 311 are interconnected through the third air passage 321. A fourth air passage 421 is provided between the three second compression devices 411, and all the second compression devices 411 are interconnected through the fourth air passage 421. The control valve module 6 includes a third control valve group 631, which includes a third inlet valve 632 and a third outlet valve 633. The intake valve 632 is located at the intake end of the third air passage 321, and the exhaust valve 633 is located at the exhaust end of the third air passage 321. The third intake valve 632 is used to control the opening and closing of the intake air passage of each first compression device 311, and the third exhaust valve 633 is used to control the opening and closing of the exhaust air passage of each first compression device 311. The third intake valve 632 and the third exhaust valve 633 work together to control the number of first compression devices 311 participating in gas compression in the low-pressure compression unit 3, selectively start some or all of the first compression devices 311, and shut down some of the first compression devices 311 under low gas demand conditions to reduce the energy consumption of the low-pressure compression unit 3.

[0045] refer to Figure 5 The third intake valve 632 is located at the intake end of the fourth air passage 421, and the third exhaust valve 633 is located at the exhaust end of the fourth air passage 421. The third intake valve 632 is used to control the opening and closing of the intake air passage of each second compression device 411, and the third exhaust valve 633 is used to control the opening and closing of the exhaust air passage of each second compression device 411. The third intake valve 632 and the third exhaust valve 633 work together to control the number of second compression devices 411 participating in gas compression in the high-pressure compression unit 4.

[0046] refer to Figure 5The third intake valve 632 is located at the intake end of the connecting air passage 111, and the third exhaust valve 633 is located at the exhaust end of the connecting air passage 111. The third intake valve 632 is used to control the intake of the connecting air passage 111, and the third exhaust valve 633 is used to control the exhaust of the connecting air passage 111. The third intake valve 632 and the third exhaust valve 633 work together to control the gas flow between one of the first compression devices 311 and one of the second compression devices 411, thereby achieving flexible gas allocation between the low-pressure compression unit 3 and the high-pressure compression unit 4, and ensuring the stability of gas supply under different operating conditions.

[0047] The implementation principle of Embodiment 2 of this application is as follows: The vehicle-mounted gas source management system can flexibly adjust the opening and closing of the control valve module 6 according to the number of the first compression device 311 and the second compression device 411. When the number of the second compression device 411 is one and the number of the first compression device 311 is greater than one, the number of the first compression device 311 participating in low-pressure gas supply is dynamically allocated to achieve on-demand supply of low-pressure gas. When the number of the first compression device 311 is one and the number of the second compression device 411 is greater than one, the number of the second compression device 411 participating in high-pressure gas supply is dynamically allocated to achieve on-demand supply of high-pressure gas. When the number of both the first compression device 311 and the second compression device 411 is greater than one, the number of the first compression device 311 participating in gas compression in the low-pressure compression unit 3 and the number of the second compression device 411 participating in gas compression in the high-pressure compression unit 4 can be flexibly adjusted according to the ratio of high and low pressure gas demand.

[0048] Example 3: A vehicle-mounted gas supply management system capable of simultaneously supplying high and low pressure gas, referenced Figure 6 The difference from Example 1 is that the low-pressure compression unit 3 and the high-pressure compression unit 4 are not connected to each other.

[0049] refer to Figure 6The control valve module 6 includes a first control valve group 611 and a second control valve group 621. The first control valve group 611 includes a first intake valve 612 and a first outlet valve 613. The first intake valve 612 is located at the intake end of the first compression device 311, and the first outlet valve 613 is located at the outlet end of the first compression device 311. The first intake valve 612 and the first outlet valve 613 work together to control the air passage opening and closing of the first compression device 311. Similarly, the second control valve group 621 includes a second intake valve 622 and a second outlet valve 623. The second intake valve 622 is located at the outlet end of the second compression device 411. The second intake valve 622 and the second exhaust valve 623 are located at the exhaust end of the second compression device 411. The second intake valve 622 and the second exhaust valve 623 work together to control the air passage of the second compression device 411. Through the independent control of the first control valve group 611 and the second control valve group 621, the air passage switching between the low-pressure compression unit 3 and the high-pressure compression unit 4 can be realized, thereby flexibly adjusting the independent supply of high and low pressure gas. The vehicle can realize three working conditions according to the actual gas demand: separate low-pressure gas supply, separate high-pressure gas supply, or simultaneous high and low pressure gas supply. The working conditions can be flexibly switched to adapt to different gas usage scenarios of the vehicle.

[0050] The implementation principle of Embodiment 3 of this application is as follows: the low-pressure compression unit 3 and the high-pressure compression unit 4 are independent of each other and their air paths are not connected. They independently complete the gas compression and gas supply work. When the vehicle air source management system is working, the first compression device 311 of the low-pressure compression unit 3 can independently perform initial compression of external atmospheric pressure gas to form low-pressure gas and supply it to the low-pressure gas consumption unit 1. The second compression device 411 of the high-pressure compression unit 4 can independently complete the secondary compression of low-pressure gas to form high-pressure gas and supply it to the vehicle high-pressure gas consumption unit 2. The first intake valve 612 and the first outlet valve 613 work together to control the overall airflow of the first compression unit 311, and the second intake valve 622 and the second outlet valve 623 work together to control the overall airflow of the second compression unit 411. Through the independent opening and closing control of the two sets of control valves, the start and stop switching of the low-pressure compression unit 3 and the high-pressure compression unit 4 can be realized respectively, so that the system can flexibly switch the working mode according to the actual air demand of the vehicle. The independent structure of the high-pressure compression unit 4 and the low-pressure compression unit 3 can avoid mutual interference between the two airflow pressures, thereby improving the stability of the system's air supply and the reliability of its operation.

[0051] Example 4: A vehicle-mounted gas supply management system capable of simultaneously supplying high and low pressure gas, referenced Figure 7 The difference from Embodiment 1 is that the gas distribution assembly 7 is different from that in Embodiment 1. The gas distribution assembly 7 includes a gas distribution chamber 711, and the inlet end of the gas distribution chamber 711 is connected to the low-pressure compression unit 3. Figure 1 (as shown in the image) connected, receiving the low-pressure compression unit 3 ( Figure 1(As shown in the diagram) All low-pressure gas output is concentrated and collected. The outlet of the gas distribution chamber 711 is connected to the low-pressure gas unit 1 (using a three-way valve). Figure 1 (shown in the image) and low-voltage circuit 5 ( Figure 1 As shown in the figure, it realizes two independent gas supply.

[0052] refer to Figure 7 The gas distribution assembly 7 also includes an inlet distribution valve 721, a first outlet distribution valve 722, and a second outlet distribution valve 723. Multiple gas distribution chambers 711 are provided and arranged in parallel. In this embodiment, there are two gas distribution chambers 711. The inlet distribution valve 721 is located at the inlet end of each gas distribution chamber 711 to control the inlet flow of each gas distribution chamber 711. The first outlet distribution valve 722 is located on the gas path between the outlet end of each gas distribution chamber 711 and the low-pressure circuit 5 to control the supply of gas from each gas distribution chamber 711 to the low-pressure circuit 5. The second outlet distribution valve 723 is located between the outlet end of each gas distribution chamber 711 and the low-pressure gas unit 1 (…). Figure 1 The gas path between (shown in the figure) is used to control the gas distribution chamber 711 to supply gas to the low-pressure gas unit 1 (shown in the figure). Figure 1 (As shown in the diagram) The on / off state of the gas supply, and the opening and closing of the first gas distribution valve 722 and the second gas distribution valve 723 in the same gas distribution chamber 711, determine the distribution of low-pressure gas in the gas distribution chamber 711 to the low-pressure circuit 5 or the low-pressure gas consumption unit 1 as needed. Figure 1 As shown in the figure, the gas distribution ratio can be dynamically adjusted according to the real-time changes in the vehicle's high and low pressure gas demand, adjusting the delivery to the low-pressure circuit 5 and the low-pressure gas unit 1. Figure 1 The gas flow rate (shown in the figure) allows for more precise gas distribution, improving the overall gas supply efficiency and flexibility of the system.

[0053] The implementation principle of Embodiment 4 of this application is as follows: When the vehicle gas source management system is working, all the low-pressure gas generated by the low-pressure compression unit 3 is stored in each gas distribution chamber 711. Each gas distribution chamber 711 is equipped with an intake distribution valve 721 at its inlet end, which is used to independently control the intake of a single gas distribution chamber 711. Each gas distribution chamber 711 is connected to the low-pressure gas consumption unit 1 and the low-pressure circuit 5 respectively by a three-way valve at its outlet end, and is equipped with a first outlet distribution valve 722 and a second outlet distribution valve 723 respectively. Through the independent opening and closing of the first outlet distribution valve 722 and the second outlet distribution valve 723, the corresponding gas distribution chamber 711 can be individually controlled to deliver low-pressure gas to the low-pressure circuit 5 or to the low-pressure gas consumption unit 1. The vehicle gas source management system can flexibly put different numbers of gas distribution chambers 711 into operation according to the real-time high and low pressure gas consumption load of the vehicle, and accurately match the low-pressure and high-pressure gas consumption needs.

[0054] Example 5: A control method for simultaneously supplying gas at high and low pressures, referenced. Figure 1 and Figure 2 The system employs an on-board gas source management system to control the simultaneous supply of high and low pressure gas, including the following steps: S1: An external gas source delivers gas to the first compression device 311 of the low-pressure compression unit 3. When the first compression device 311 and the second compression device 411 are not connected to each other ( Figure 6 As shown in the diagram, the low-pressure compression unit 3 and the high-pressure compression unit 4 operate independently. The total amount of low-pressure gas output by the low-pressure compression unit 3 is equal to the gas output of five first compression devices 311, and the total amount of high-pressure gas output by the high-pressure compression unit 4 is equal to the gas output of one second compression device 411. The sum of the number of first compression devices 311 and second compression devices 411 is greater than or equal to three, the number of first compression devices 311 is five, and the number of second compression devices 411 is one. Figure 3 As shown in the diagram, by adjusting the opening and closing of the third control valve group 631, the number of the first compression devices 311 engaged in operation in the low-pressure compression unit 3 is dynamically allocated, thereby achieving on-demand adjustment of the low-pressure gas supply; the sum of the number of the first compression devices 311 and the second compression devices 411 is greater than or equal to three, the number of the first compression devices 311 is one, and the number of the second compression devices 411 is five. Figure 4 As shown in the diagram, by adjusting the opening and closing of the third control valve group 631, the number of second compression devices 411 engaged in operation in the high-pressure compression unit 4 is dynamically allocated, thereby achieving on-demand adjustment of the high-pressure gas supply; the number of both the first compression device 311 and the second compression device 411 is greater than one. Figure 5 As shown in the figure, by adjusting the opening and closing of the third control valve group 631, the number of the first compression device 311 in the low-pressure compression unit 3 or the number of the second compression device 411 in the high-pressure compression unit 4 can be dynamically allocated, so as to realize the coordinated on-demand adjustment of the low-pressure gas supply and the high-pressure gas supply.

[0055] S2: After the first compression device 311 compresses the gas to a low-pressure set value, it delivers it to the gas distribution assembly 7. The gas distribution assembly 7 selectively opens the first gas outlet distribution valve 722 or the second gas outlet distribution valve 723 of the gas distribution chamber 711 according to the demand of the low-pressure gas consumption unit 1 and the high-pressure gas consumption unit 2. Figure 7 As shown in the figure, the low-pressure gas is distributed to the low-pressure gas consumption unit 1 or the high-pressure compression unit 4 as needed. The second compression device 411 of the high-pressure compression unit 4 pressurizes the low-pressure gas a second time to form high-pressure gas, which is then delivered to the high-pressure gas consumption unit 2.

[0056] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vehicle-mounted gas supply management system capable of simultaneously supplying high and low pressure gas, comprising a low-pressure gas consumption unit (1) and a high-pressure gas consumption unit (2), characterized in that: It also includes a low-pressure compression unit (3), a high-pressure compression unit (4), a low-pressure circuit (5), and a control valve module (6). The air inlet of the low-pressure compression unit (3) is connected to an external air source. The low-pressure compression unit (3) is connected to the low-pressure gas consumption unit (1) to achieve low-pressure gas supply. The high-pressure compression unit (4) is connected to the high-pressure gas consumption unit (2) to achieve high-pressure gas supply. One end of the low-pressure circuit (5) is connected to the air passage between the low-pressure compression unit (3) and the low-pressure gas consumption unit (1), and the other end is connected to the air inlet of the high-pressure compression unit (4) so ​​that the high-pressure gas after secondary pressurization enters the high-pressure compression unit (4). The control valve module (6) is located at the air inlet and outlet of the high-pressure compression unit (4) and the air inlet and outlet of the low-pressure compression unit (3).

2. The vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The low-pressure compression unit (3) includes a first compression device (311). The outlet of the first compression device (311) is connected to the low-pressure gas supply unit (1) to achieve low-pressure gas supply and to the low-pressure circuit (5) to deliver a portion of the low-pressure gas to the high-pressure compression unit (4) for secondary pressurization. The high-pressure compression unit (4) includes a second compression device (411). The inlet of the second compression device (411) is connected to the low-pressure circuit (5) to receive a portion of the low-pressure gas from the first compression device (311). The outlet of the second compression device (411) is... The end is connected to the high-pressure gas supply unit (2) to realize high-pressure gas supply. The first compression device (311) and the second compression device (411) are not connected to each other. The control valve module (6) includes a first control valve group (611) and a second control valve group (621). The first control valve group (611) is set at the inlet and outlet of the first compression device (311) to control the gas path of the first compression device (311). The second control valve group (621) is set at the inlet and outlet of the second compression device (411) to control the gas path of the second compression device (411).

3. The vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The low-pressure compression unit (3) includes a first compression device (311), the high-pressure compression unit (4) includes a second compression device (411), a connecting air passage (111) is provided between the low-pressure compression unit (3) and the high-pressure compression unit (4), the control valve module (6) includes a third control valve group (631), the sum of the number of the first compression device (311) and the second compression device (411) is greater than or equal to three, the number of the first compression device (311) is multiple, the number of the second compression device (411) is one, a first air passage (312) is provided between the multiple first compression devices (311), the third control valve group (631) is provided on the first air passage (312) to control the opening and closing of the inlet and outlet air passages between each of the first compression devices (311), and is provided on the connecting air passage (111) to control the opening and closing of the inlet and outlet air passages between the second compression device (411) and one of the first compression devices (311).

4. The vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The low-pressure compression unit (3) includes a first compression device (311), the high-pressure compression unit (4) includes a second compression device (411), a connecting air passage (111) is provided between the low-pressure compression unit (3) and the high-pressure compression unit (4), the control valve module (6) includes a third control valve group (631), the sum of the number of the first compression device (311) and the second compression device (411) is greater than or equal to three, the number of the first compression device (311) is one, the number of the second compression devices (411) is multiple, a second air passage (412) is provided between the multiple second compression devices (411), the third control valve group (631) is provided on the second air passage (412) to control the opening and closing of the inlet and outlet air passages between each second compression device (411), and is provided on the connecting air passage (111) to control the opening and closing of the inlet and outlet air passages between the first compression device (311) and one of the second compression devices (411).

5. A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The low-pressure compression unit (3) includes a first compression device (311), the high-pressure compression unit (4) includes a second compression device (411), a connecting air passage (111) is provided between the low-pressure compression unit (3) and the high-pressure compression unit (4), the control valve module (6) includes a third control valve group (631), the number of the first compression device (311) and the second compression device (411) is greater than one, a third air passage (321) is provided between the multiple first compression devices (311), and the multiple second compression devices... A fourth air passage (421) is provided between the units (411). The third control valve group (631) is provided on the third air passage (321) to control the opening and closing of the air passage between each of the first compression devices (311), and is provided on the fourth air passage (421) to control the opening and closing of the air passage between each of the second compression devices (411). It is also provided on the connecting air passage (111) to control the opening and closing of the air passage between one of the first compression devices (311) and one of the second compression devices (411).

6. A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 5, characterized in that: The vehicle-mounted gas source management system also includes a gas distribution component (7), which includes a gas distribution chamber (711). The inlet of the gas distribution chamber (711) is connected to the low-pressure compression unit (3), and the outlet of the gas distribution chamber (711) is connected to the low-pressure gas consumption unit (1) and the low-pressure circuit (5) through a T-junction.

7. A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 6, characterized in that: The gas distribution assembly (7) further includes an inlet distribution valve (721), a first outlet distribution valve (722), and a second outlet distribution valve (723). The gas distribution chambers (711) are provided in multiple and arranged in parallel. The inlet distribution valve (721) is located at the inlet end of each gas distribution chamber (711). The first outlet distribution valve (722) is located on the gas path between the outlet end of each gas distribution chamber (711) and the low-pressure circuit (5). The second outlet distribution valve (723) is located on the gas path between the outlet end of each gas distribution chamber (711) and the low-pressure gas unit (1). The first outlet distribution valve (722) and the second outlet distribution valve (723) at the same gas distribution chamber (711) cooperate to control the amount of low-pressure gas distributed by the gas distribution assembly (7) to the low-pressure circuit (5).

8. A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The vehicle-mounted air source management system also includes a drying tank (9) and a backflush assembly (10). One end of the drying tank (9) is connected to the outlet of the high-pressure compression unit (4) and the other end is connected to the high-pressure air consumption unit (2). The backflush assembly (10) includes a backflush air passage (101) and a high-pressure storage tank (102). One end of the backflush air passage (101) is connected to the high-pressure storage tank (102) and the other end is connected to the backflush inlet of the drying tank (9). The high-pressure storage tank (102) blows dry gas into the drying tank (9) through the backflush air passage (101). The backflush outlet of the drying tank (9) is connected to the atmosphere to discharge the gas that absorbs moisture in the drying tank (9).

9. A vehicle-mounted gas source management system capable of simultaneously supplying high and low pressure gas according to claim 1, characterized in that: The vehicle-mounted air source management system also includes a return flow control valve (8), which is installed on the low-pressure circuit (5) to control the on / off state of the low-pressure circuit (5).

10. A control method for simultaneously supplying gas at high and low pressures, characterized in that, The vehicle-mounted gas source management system described in claim 7 above controls high and low pressure gas supply, comprising the following steps: S1: An external gas source delivers gas to the first compression device (311) of the low-pressure compression unit (3). Based on the demand for low-pressure gas and high-pressure gas, the control valve module (6) is selectively opened and closed to dynamically allocate the number of the first compression device (311) in the low-pressure compression unit (3) and the number of the second compression device (411) in the high-pressure compression unit (4). S2: After the first compression device (311) compresses the gas to a low pressure set value, it is delivered to the gas distribution component (7). The gas distribution component (7) distributes part of the low-pressure gas to the low-pressure gas unit (1) according to the demand of the low-pressure gas unit (1) and the high-pressure gas unit (2). The other part of the low-pressure gas is delivered to the high-pressure compression unit (4) through the low-pressure circuit (5). The second compression device (411) of the high-pressure compression unit (4) pressurizes the low-pressure gas a second time to form high-pressure gas, which is then delivered to the high-pressure gas unit (2).

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