Intelligent air management system and control method thereof, electronic equipment and vehicle

Abstract

The invention discloses an intelligent air management system and a control method thereof, electronic equipment and a vehicle, the intelligent air management system comprises an air compressor, a dryer, an exhaust valve and a blowback valve, the dryer is connected with an air outlet of the air compressor, the exhaust valve is connected with an exhaust port of the air compressor, and the blowback valve is connected with the air compressor. The blowback valve is arranged on an air backflow loop of the dryer to control backflow of air dried by the dryer to conduct blowback regeneration on a drying agent of the dryer. The control method comprises the steps that it is determined that the vehicle is in a flameout power-off state; the total to-be-regenerated air amount of the intelligent air management system is obtained; and controlling the opening and closing states of the exhaust valve and the reverse blowing valve according to the total to-be-regenerated gas amount. According to the method, when the vehicle is in the flameout and power-off state, it can be guaranteed that the drying agent is fully dried, the problem that ice blockage is generated on a pipeline due to water residues in the low-temperature environment is solved, the air supply quality of an air supply system is improved, and the risk that a braking system fails is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a control method for an intelligent air management system, an electronic device, an intelligent air management system, and a vehicle. Background Art

[0002] Existing intelligent air management systems mainly rely on the airflow after the vehicle starts to regenerate the desiccant. When the vehicle is turned off and powered down, there is a lack of a control strategy for actively performing back-blow regeneration of the desiccant, resulting in the desiccant gradually losing its drying ability due to long-term adsorption of moisture, affecting the subsequent air supply quality. In a cold environment, if there is excessive residual moisture in the pipeline, it is easy to cause pipeline blockage (ice blockage) due to freezing at low temperatures, affecting the normal operation of the air supply system, and even possibly causing the braking system to fail, seriously threatening driving safety. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide a control method for an intelligent air management system, which can ensure the sufficient drying of the desiccant when the vehicle is in the state of being turned off and powered down, prevent the problem of pipeline icing and blockage caused by residual moisture in a low-temperature environment, improve the air supply quality of the air supply system, reduce the risk of braking system failure, and thus improve the stability and reliability of the air supply system and the braking system.

[0004] A second object of the present invention is to provide an electronic device.

[0005] A third object of the present invention is to provide an intelligent air management system.

[0006] A fourth object of the present invention is to provide a vehicle.

[0007] To achieve the above object, the control method for an intelligent air management system according to the first aspect embodiment of the present invention, the intelligent air management system includes an air compressor, a dryer, an exhaust valve, and a back-blow valve. The dryer is connected to the air outlet of the air compressor, the exhaust valve is connected to the exhaust port of the air compressor, and the back-blow valve is arranged on the air return circuit of the dryer to control the air return after drying by the dryer to perform back-blow regeneration on the desiccant of the dryer. The control method includes: determining that the vehicle is in the state of being turned off and powered down; obtaining the total amount of air to be regenerated in the intelligent air management system; and controlling the opening and closing states of the exhaust valve and the back-blow valve according to the total amount of air to be regenerated.

[0008] According to the control method of the intelligent air management system according to an embodiment of the present invention, when the vehicle is in the state of being turned off and powered down, by obtaining the total amount of regeneration gas to be awaited by the intelligent air management system in real time, the drying state of the desiccant in the dryer can be accurately judged, and then the opening and closing states of the exhaust valve and the backflush valve can be dynamically controlled. Thus, even when the vehicle is not started, the backflush regeneration of the desiccant and the evacuation of the air compressor pipeline can still be performed, so that the desiccant can continuously maintain good drying ability after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and at the same time effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in a low-temperature environment, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0009] In some embodiments, controlling the opening and closing states of the exhaust valve and the backflush valve according to the total amount of regeneration gas to be awaited includes: when the total amount of regeneration gas to be awaited is greater than a preset gas volume threshold, controlling both the exhaust valve and the backflush valve to open to simultaneously perform power-down backflush and power-down evacuation.

[0010] In some embodiments, the control method further includes: after both the exhaust valve and the backflush valve are opened, in response to the total amount of regeneration gas to be awaited being less than or equal to the preset gas volume threshold, closing the exhaust valve and the backflush valve.

[0011] In some embodiments, controlling the opening and closing states of the exhaust valve and the backflush valve according to the total amount of regeneration gas to be awaited includes: when the total amount of regeneration gas to be awaited is less than and equal to the preset gas volume threshold, controlling the exhaust valve to open and the backflush valve to be in a closed state to only perform the power-down evacuation.

[0012] In some embodiments, obtain the rotational speed value of the engine; when the rotational speed value is less than or equal to a preset rotational speed threshold, control the exhaust valve to close.

[0013] In some embodiments, the state of being turned off and powered down is that the vehicle key is in the OFF gear.

[0014] In some embodiments, the control method further includes: during the power-down backflush and the power-down evacuation, if it is detected that the vehicle key is switched from the OFF gear to the ON gear, immediately abort the current operations of the power-down backflush and the power-down evacuation.

[0015] To achieve the above object, an electronic device according to an embodiment of the second aspect of the present invention includes: at least one processor; a memory communicatively connected to the at least one processor; a computer program stored in the memory and executable by the at least one processor, and when the computer program is executed, it implements the control method of the intelligent air management system described in the above embodiments.

[0016] An electronic device according to an embodiment of the present invention, by executing a computer program that implements the control method of the intelligent air management system described in the above embodiment, when the vehicle is in the off and powered-down state, by real-time obtaining the total amount of air to be regenerated again in the intelligent air management system, it can accurately judge the drying state of the desiccant in the dryer, and then dynamically control the opening and closing states of the exhaust valve and the backflush valve, so that when the vehicle is not started, the operations of backflush regeneration of the desiccant and evacuation of the air compressor pipeline can still be performed, enabling the desiccant to continuously maintain good drying ability after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and at the same time effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in a low-temperature environment, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0017] To achieve the above object, an intelligent air management system according to an embodiment of the third aspect of the present invention includes: an air compressor for compressing and pumping out air and suitable for supplying air to the brake system of a vehicle; a dryer connected to the air outlet of the air compressor for drying the compressed gas discharged from the air outlet of the air compressor; a pressure sensor for detecting the real-time pressure of the compressed gas; an exhaust valve connected to the exhaust port of the air compressor for controlling the exhaust of the air compressor; a backflush valve provided on the air return circuit of the dryer to control the backflush regeneration of the desiccant in the dryer by the air returned after drying by the dryer; a controller respectively connected to the air compressor, the pressure sensor, the exhaust valve and the backflush valve for executing the control method of the intelligent air management system described in the above embodiment.

[0018] According to the intelligent air management system of an embodiment of the present invention, the controller is respectively connected to an air compressor, a pressure sensor, an exhaust valve and a backflush valve. By executing the control method of the intelligent air management system described in the above embodiments, when the vehicle is in the off and powered-down state, by obtaining the total amount of air to be regenerated of the intelligent air management system in real time, the drying state of the desiccant in the dryer can be accurately judged, and then the switching states of the exhaust valve and the backflush valve can be dynamically controlled. Thus, even when the vehicle is not started, the backflush regeneration of the desiccant and the evacuation of the air compressor pipeline can still be performed, so that the desiccant can continuously maintain good drying ability after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and at the same time effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in a low-temperature environment, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0019] To achieve the above object, a vehicle according to an embodiment of the fourth aspect of the present invention includes: a brake system; the intelligent air management system described in the above embodiments for supplying air to the brake system; an engine controller, the engine controller is connected to the controller of the air management system, and the engine controller sends the engine speed to the controller of the intelligent air management system.

[0020] According to the vehicle of an embodiment of the present invention, through the connection between the engine controller and the intelligent air management system controller, the engine speed is transmitted to the intelligent air management system in real time, so that when the vehicle is in the off and powered-down state, the off evacuation operation can be precisely controlled according to the actual process of the engine from idle speed to zero speed. Thus, during the evacuation process, water and gas in the air compressor pipeline can be effectively removed, ensuring that the desiccant in the dryer continuously maintains a good drying state after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and at the same time preventing the problem of ice blockage caused by pipeline residual moisture in a low-temperature environment, improving the air supply quality of the air supply system, reducing the risk of brake system failure, and thus improving the safety and reliability of the vehicle.

[0021] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where: Figure 1 is a flowchart of a control method of an intelligent air management system according to an embodiment of the present invention; Figure 2It is the overall flowchart of the control method of the intelligent air management system according to an embodiment of the present invention; Figure 3 It is the block diagram of an electronic device according to an embodiment of the present invention; Figure 4 It is the block diagram of the intelligent air management system according to an embodiment of the present invention; Figure 5 It is the block diagram of a vehicle according to an embodiment of the present invention.

[0023] Reference numerals: Vehicle 100; Brake system 1; Intelligent air management system 2; Engine controller 3; Air compressor 21; Dryer 22; Pressure sensor 23; Exhaust valve 24; Backflush valve 25; Controller 26; Electronic device 200; Processor 201; Memory 202. Detailed implementation manners

[0024] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0025] Below, refer to Figure 1 - Figure 2 Describe the control method of the intelligent air management system according to an embodiment of the present invention. This control method is used for the intelligent air management system. Among them, the intelligent air management system includes an air compressor, a dryer, an exhaust valve, and a backflush valve. The dryer is connected to the air outlet of the air compressor, the exhaust valve is connected to the exhaust port of the air compressor, and the backflush valve is arranged on the air return circuit of the dryer to control the air return after drying by the dryer to backflush and regenerate the desiccant of the dryer, so as to ensure that the vehicle can keep the desiccant fully dry after the engine is turned off and the power is cut off.

[0026] Figure 1 It is the flowchart of the control method of the intelligent air management system according to an embodiment of the present invention. As Figure 1 shown, the control method of the intelligent air management system according to the embodiment of the present invention at least includes steps S1 - S3.

[0027] S1, Determine that the vehicle is in the state of the engine being turned off and the power being cut off.

[0028] Specifically, the system first detects the current state of the vehicle to determine whether the vehicle has entered the state of powering off after engine shutdown. This state can be achieved by detecting the position of the vehicle key or by monitoring the states of each power domain through the vehicle power management system and determining whether the engine power has been cut off. Only after the vehicle shuts down, relevant systems (such as the engine) will enter the power-off mode. At this time, the vehicle no longer generates the airflow during startup. Therefore, it is necessary to rely on a pre-designed control strategy to perform subsequent operations of desiccant backflush regeneration and pipeline evacuation. To ensure the safety and accuracy of the operations, the system can continuously monitor the vehicle state and enter the next step only after the shutdown state is confirmed.

[0029] In some embodiments, when the vehicle is in the "powering off after engine shutdown" state, it does not mean that all systems will immediately lose power supply. The power architecture of the whole vehicle can be divided into multiple power domains, mainly including: constant power (B+, Battery Power), ACC (Accessory Power), IGN (Ignition Power), keep-alive power (KAP), etc. Among them, the constant power (B+, Battery Power) is always powered by the battery and is not controlled by the ignition switch. It is mainly used for functions such as key storage, remote control, and power-on detection. ACC (Accessory Power) can be used for in-vehicle entertainment systems, navigation, etc., and can be delayed to turn off after shutdown. IGN (Ignition Power) can supply the engine control unit and the power system and will be immediately turned off after shutdown. Some controllers will have a keep-alive power supply, allowing them to continue operating for a short time to complete necessary tasks after shutdown (such as data storage, air management).

[0030] Therefore, in vehicle design, the power supply of key control systems (such as the intelligent air management system) can be retained, or the system itself has an independent backup power supply to ensure that necessary operations can still be performed after the engine shuts down, such as controlling the on-off states of the exhaust valve and the backflush valve. These valves can be electrically controlled, and their operations rely on instructions from dedicated circuits or electronic control units, and these control units can still operate for a period of time in the shutdown state to complete subsequent operations such as pipeline evacuation and backflush regeneration. Therefore, the "powering off after engine shutdown" state can mean that the engine and some non-critical systems stop operating, but the intelligent air management system can still maintain partial power supply, so that valve control can still be achieved.

[0031] S2. Obtain the total amount of air to be regenerated in the intelligent air management system.

[0032] In some embodiments, the total amount of air to be regenerated may refer to the volume or pressure difference of the air required to regenerate the desiccant in the dryer in the current intelligent air management system, which reflects the degree of moisture adsorption of the desiccant in the dryer. By obtaining the total amount of air to be regenerated, it can be determined whether the desiccant has been sufficiently dried. If the total amount of air to be regenerated is large, it indicates that the desiccant has adsorbed a large amount of moisture and a backflush regeneration operation needs to be performed; if the total amount of air to be regenerated is small, it indicates that the desiccant has reached a sufficiently dry state and only the residual gas and moisture in the pipeline need to be emptied.

[0033] In some embodiments, the total amount of air to be regenerated can be measured by a pressure sensor, a humidity sensor or a flow meter installed in the system, and then obtained by combining preset system parameters and a calculation model.

[0034] S3. Control the on-off states of the exhaust valve and the backflush valve according to the total amount of air to be regenerated.

[0035] In some embodiments, the function of the exhaust valve is to discharge excess air, moisture or other impurities in the pipeline during system operation. When the total amount of air to be regenerated indicates that the desiccant has been sufficiently regenerated or during the backflush regeneration process when the residual water and gas in the pipeline need to be discharged, the controller can control the exhaust valve to open to empty the pipeline, prevent moisture from staying for a long time, and thus reduce the risk of low-temperature icing. During the normal air supply stage, the exhaust valve remains closed to prevent compressed air leakage.

[0036] In some embodiments, the backflush valve is arranged on the air return circuit of the dryer, and its function is to control the reverse flow of the dried air for the backflush regeneration operation of the desiccant in the dryer. That is to say, when the total amount of air to be regenerated is large and the desiccant needs to recover its drying ability, the backflush valve opens, causing the air in the dryer to flow in the reverse direction to help blow out the moisture and impurities adsorbed in the desiccant, thereby restoring its moisture absorption performance.

[0037] In some embodiments, the exhaust valve and the backflush valve can be electrically controlled valves, which are centrally controlled by the controller in the intelligent air management system. The controller transmits control signals to their respective actuators through a vehicle bus (such as a CAN (Controller Area Network) bus) to achieve precise control of the on-off states of the valves. This electrically controlled method ensures that even when the vehicle is in the off and powered-down state, as long as the intelligent air management system maintains partial power supply, the valves can also respond according to the predetermined control strategy.

[0038] The control method of the intelligent air management system according to the embodiments of the present invention can accurately determine the drying state of the desiccant in the dryer by obtaining the total amount of air to be regenerated in the intelligent air management system in real time when the vehicle is in the off and powered-down state. Furthermore, it dynamically controls the opening and closing states of the exhaust valve and the backflush valve, so that the operations of backflushing and regenerating the desiccant and emptying the air compressor pipeline can still be carried out when the vehicle is not started. This enables the desiccant to continuously maintain good drying capacity after the vehicle shuts off, avoiding the gradual loss of drying capacity due to long-term moisture adsorption, and at the same time effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in low-temperature environments, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0039] In some embodiments, controlling the opening and closing states of the exhaust valve and the backflush valve according to the total amount of air to be regenerated includes: when the total amount of air to be regenerated is greater than a preset gas volume threshold, controlling both the exhaust valve and the backflush valve to open to simultaneously perform power-off backflushing and power-off emptying.

[0040] Specifically, it is determined whether the desiccant in the dryer has reached a fully dry state according to the total amount of air to be regenerated detected in real time, so as to selectively start power-off backflushing and power-off emptying. When the total amount of air to be regenerated is greater than the preset gas volume threshold, the system determines that the current desiccant still adsorbs a large amount of moisture and needs to be regenerated by backflushing to restore its moisture absorption capacity. At the same time, it is necessary to empty the residual air and moisture in the pipeline to prevent ice blockage at low temperatures. Therefore, the controller sends valve-opening commands to the electronically controlled exhaust valve and backflush valve respectively through the vehicle bus (such as the CAN bus), causing both of them to open simultaneously, and starting the operations of power-off backflushing and power-off emptying. After the exhaust valve opens, it can quickly discharge the excess gas and moisture in the pipeline, and the opening of the backflush valve enables the dried air in the dryer to flow in the reverse direction, and the moisture adsorbed by the desiccant is blown out through the backflushing process, thereby restoring its moisture absorption performance.

[0041] In some embodiments, the preset gas volume threshold is a key parameter for determining whether the desiccant in the dryer needs backflushing and regeneration operations. The preset gas volume threshold can be defined as a set value to represent the volume or pressure difference of the air still to be regenerated in the system. For example, the preset gas volume threshold can be 0. When the total amount of air to be regenerated exceeds 0, the system determines that the desiccant still adsorbs excessive moisture, and thus starts the operations of power-off backflushing and power-off emptying.

[0042] In some embodiments, the optimal preset gas volume threshold can also be determined based on experimental data according to the vehicle operating conditions, ambient temperature, and desiccant type, so as to ensure the drying effect of the system and avoid increased energy consumption or system wear caused by excessive backflushing.

[0043] In some embodiments, the control method of the intelligent air management system further includes: after both the exhaust valve and the backflush valve are opened, in response to the total amount of air to be regenerated being less than or equal to a preset gas volume threshold, closing the exhaust valve and the backflush valve.

[0044] Specifically, a pressure sensor and a flowmeter installed in the dryer or the pipeline are used to measure the pressure difference and air flow at both ends of the dryer in real time, and the current amount of air to be regenerated is obtained through calculation and conversion. As the power-down backflush and power-down evacuation proceed, the total amount of air to be regenerated in the system gradually decreases. When it is detected that this value reaches the preset gas volume threshold, it indicates that the desiccant has been fully regenerated and the residual moisture and gas in the pipeline have been basically removed. At this time, the controller sends a closing instruction to the electronic control valve through the vehicle bus (such as the CAN bus) to quickly close the exhaust valve and the backflush valve to avoid excessive backflush or evacuation, and prevent unnecessary energy consumption and wear.

[0045] In some embodiments, the intelligent air management system can also set a delay protection logic, that is, after the total amount of air to be regenerated first drops below the threshold, continue to detect for a certain period of time to confirm stability before closing the valve. This design can improve the robustness and operation accuracy of the system, thereby realizing an efficient and reliable desiccant backflush regeneration and pipeline evacuation process.

[0046] In some embodiments, according to the total amount of air to be regenerated, controlling the opening and closing states of the exhaust valve and the backflush valve includes: when the total amount of air to be regenerated is less than or equal to the preset gas volume threshold, controlling the exhaust valve to open and the backflush valve to be in the closed state to only perform power-down evacuation.

[0047] Specifically, when the total amount of air to be regenerated detected by the system is less than or equal to the preset gas volume threshold, the system determines that the desiccant in the dryer is in a fully dry state at this time, and there is no need to perform the backflush regeneration operation. At this time, only the power-down evacuation operation needs to be performed to remove the residual moisture and gas in the pipeline. In this case, the controller can send an open valve instruction to the exhaust valve while keeping the backflush valve closed, so as to ensure that only the exhaust valve is used to discharge the excess air, moisture and other impurities in the pipeline without generating a backflush airflow. The purpose of this control method is to prevent the loss of desiccant or the increase of system energy consumption caused by unnecessary backflush, avoid over-regenerating the desiccant, and thus extend its service life.

[0048] Therefore, through this control strategy, the intelligent air management system can ensure that the residual moisture and gas in the pipeline are completely removed in the power-off state of the vehicle, providing a safe and reliable environment for subsequent air supply, and ultimately improving the stability and safety of the entire air supply system.

[0049] In some embodiments, during the operation of only performing power-down evacuation, obtain the engine speed value, and when the speed value is less than or equal to the preset speed threshold, control the exhaust valve to close.

[0050] Specifically, in the case of only performing the power-down evacuation operation, the timing of the power-down evacuation operation is determined by obtaining the engine speed value in real time. That is, when the vehicle shuts off, the engine speed will gradually decrease and finally drop to a preset speed threshold (such as zero speed). At this time, the period during which the engine drops from idle speed to the preset speed threshold is the effective time period for the system to perform the power-down evacuation operation. The system uses a speed sensor installed on the engine to collect speed data in real time and transmits this data to the controller of the intelligent air management system. When it is detected that the engine speed is lower than or equal to the preset speed threshold, the controller sends a closing signal to the electric actuator of the exhaust valve through the vehicle bus, thereby ending the evacuation process, avoiding unnecessary energy consumption caused by too long evacuation time, and further improving the safety and reliability of the air supply system and the braking system.

[0051] In some embodiments, the power-off state after shutdown is that the vehicle key is in the OFF position. Specifically, the position of the vehicle key is monitored in real time through the on-vehicle electronic control unit or a dedicated sensor. When it is detected that the vehicle key is in the OFF position, the system determines that the vehicle has entered the power-off state after shutdown. At this time, the engine and other non-critical systems powered by the ignition power supply stop operating, while the intelligent air management system continues to maintain partial power supply relying on the constant power (B+) or the backup power supply, so as to be able to perform necessary pipeline evacuation and backflush regeneration operations.

[0052] In some embodiments, the control method of the intelligent air management system further includes: during the power-down backflush and power-down evacuation processes, if it is detected that the vehicle key is switched from the OFF position to the ON position, the current power-down backflush and power-down evacuation operations are immediately aborted.

[0053] Specifically, the system monitors the vehicle key state in real time through the on-vehicle electronic control unit or a dedicated sensor. When the controller detects that the key state changes from OFF to ON, an abort signal is immediately sent to the electric control valves performing the power-down backflush and evacuation operations through the vehicle bus to stop the actions of the exhaust valve and the backflush valve. This design ensures that when the driver starts the vehicle, system conflicts or operation delays will not be caused by the still ongoing backflush regeneration or evacuation operations, and at the same time, possible energy consumption waste and equipment wear are avoided, thereby ensuring the safety and smoothness of the vehicle startup process.

[0054] Figure 2 is the overall flowchart of the control method of the intelligent air management system according to an embodiment of the present invention. As Figure 2 shown, the overall process of the control method of the intelligent air management system at least includes the following steps: S10, determining that the vehicle is in the power-off state after shutdown, that is, the vehicle key is in the OFF position.

[0055] S11. Obtain the total amount of air to be regenerated in the intelligent air management system.

[0056] S12. Determine whether the total amount of air to be regenerated is greater than a preset air volume threshold. If it is greater, proceed to step S121; if not, proceed to step S13.

[0057] S121. Control both the exhaust valve and the backflush valve to open to perform power-off backflush and power-off evacuation simultaneously.

[0058] S122. After both the exhaust valve and the backflush valve are opened, in response to the total amount of air to be regenerated being less than or equal to the preset air volume threshold, close the exhaust valve and the backflush valve.

[0059] S13. Control the exhaust valve to open and the backflush valve to be in the closed state to perform only power-off evacuation.

[0060] S14. During the operation of only performing power-off evacuation, obtain the rotational speed value of the engine.

[0061] S15. Determine whether the rotational speed value of the engine is less than or equal to a preset rotational speed threshold. If it is less, proceed to step S16; if not, return to step S14.

[0062] S16. The power-off evacuation is completed, and control the exhaust valve to close.

[0063] Generally speaking, when the vehicle is in the power-off state, by obtaining the total amount of air to be regenerated in the intelligent air management system in real time, the drying state of the desiccant in the dryer can be accurately judged, and then the opening and closing states of the exhaust valve and the backflush valve can be dynamically controlled. Thus, even when the vehicle is not started, the backflush regeneration of the desiccant and the evacuation of the air compressor pipeline can still be performed, enabling the desiccant to continuously maintain good drying ability after the vehicle shuts off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in low-temperature environments, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0064] Next, refer to Figure 3 to describe the electronic device according to an embodiment of the present invention.

[0065] Figure 3 is a block diagram of an electronic device according to an embodiment of the present invention. As Figure 3 shown, the electronic device 200 according to an embodiment of the present invention includes at least one processor 201 and a memory 202.

[0066] In some embodiments, at least one processor 201 can be one processor 201, or multiple processors 201 such as two processors 201, three processors 201, five processors 201, etc. The processor 201 can be a single-core or multi-core processor 201, and is used to execute the control method of the intelligent air management system, including detecting the vehicle power-off state, obtaining the total amount of gas to be regenerated, and controlling the on / off states of the exhaust valve and the backflush valve according to this amount of gas, and closing the exhaust valve when the engine speed is lower than a preset speed threshold, etc.

[0067] In some embodiments, the processor 201 can be the CPU (Central Processing Unit), MCU (Microcontroller Unit), DSP (Digital Signal Processor), FPGA (Field-Programmable Gate Array), or dedicated ASIC (Application-Specific Integrated Circuit) chip in the electronic device 200. It specifically depends on the design and use of the electronic device 200.

[0068] In some embodiments, the memory 202 is a device for storing data and programs, and can be a random access memory (RAM), read-only memory (ROM), flash memory, or other storage media.

[0069] In some embodiments, the memory 202 is communicatively connected to at least one processor 201. A computer program executable by at least one processor 201 is stored in the memory 202. When the at least one processor 201 executes the computer program, the control method of the intelligent air management system described in the above embodiments is implemented.

[0070] The electronic device 200 according to an embodiment of the present invention, by executing a computer program that implements the control method of the intelligent air management system described in the above embodiment, when the vehicle is in the off and powered-off state, can accurately judge the drying state of the desiccant in the dryer by obtaining the total amount of air to be regenerated in the intelligent air management system in real time, and then dynamically control the on-off states of the exhaust valve and the backflush valve. Thus, even when the vehicle is not started, the operations of backflush regeneration of the desiccant and evacuation of the air compressor pipeline can still be performed, enabling the desiccant to continuously maintain good drying ability after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in a low-temperature environment, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0071] Reference is made below Figure 4 to describe the intelligent air management system according to an embodiment of the present invention.

[0072] Figure 4 is a block diagram of an intelligent air management system according to an embodiment of the present invention. As Figure 4 shown, the intelligent air management system 2 includes: an air compressor 21, a dryer 22, a pressure sensor 23, an exhaust valve 24, a backflush valve 25, and a controller 26 In some embodiments, the air compressor 21 can be used to compress and pump out air and is suitable for supplying air to the brake system of the vehicle. Specifically, the air compressor 21 sucks in air from the environment, pressurizes the air through an internal piston-type or screw-type compression mechanism, and delivers it to an air tank or a pipeline system to provide the required high-pressure air for the brake system.

[0073] In some embodiments, the dryer 22 is connected to the outlet of the air compressor 21 and is used to dry the compressed gas discharged from the outlet of the air compressor 21. Specifically, the dryer 22 adopts an adsorption drying method and is filled with a desiccant (such as molecular sieve or silica gel particles). When the compressed air passes through the dryer 22, moisture is absorbed by the desiccant to ensure that the air entering the brake system is dry. As the usage time increases, the adsorption capacity of the desiccant will decrease, so backflush regeneration is required to restore its adsorption capacity, thereby avoiding pipeline blockage problems caused by moisture freezing in a low-temperature environment.

[0074] In some embodiments, the pressure sensor 23 is used to detect the real-time pressure of the compressed gas, providing accurate gas state information for the system, thereby assisting in judging whether the desiccant in the dryer 22 is sufficiently dried or requires regeneration treatment.

[0075] In some embodiments, the exhaust valve 24 is connected to the exhaust port of the air compressor 21 and is used to control the exhaust of the air compressor 21. The exhaust valve 24 can be an electromagnetic control valve, and its opening and closing are adjusted by the controller 26. Specifically, when the system detects moisture, gas or other impurities remaining in the pipeline, the controller 26 opens the exhaust valve 24 by sending an open valve command to discharge the moisture, gas or other impurities remaining in the pipeline. This process can effectively avoid the problem of low-temperature icing caused by long-term retention, thus ensuring the normal operation of the system.

[0076] In some embodiments, the exhaust valve 24 is provided on the dryer 22 and can be connected to the air compressor 21 through a PR (Pressure Response) pipe to achieve the exhaust function. Among them, the PR pipe is connected to the air compressor 21 and is used to release excess gas or pressure to the external environment. Through the PR pipe, the gas generated by the air compressor 21 that cannot be effectively dried or needs to be discharged can be smoothly discharged from the system to prevent abnormal pressure caused by gas backlog in the system.

[0077] In some embodiments, when the exhaust valve 24 is opened, it means that it controls the gas flow channel between the air compressor 21 and the dryer 22. At this time, after the exhaust valve 24 is opened, the steel pipe between the air compressor 21 and the dryer 22 will be connected to the external air. This process usually occurs when it is necessary to release compressed gas or remove moisture from the gas. By opening the exhaust valve 24, the gas can be smoothly discharged through the pipeline to the external environment, thereby reducing the pressure in the system, avoiding damage to the equipment due to high pressure, and maintaining the pressure balance of the system.

[0078] In addition, the opening of the exhaust valve 24 not only controls the air flow between the air compressor 21 and the external environment, but also affects the state of the exhaust spring port on the air compressor 21. The exhaust spring port can be a safety valve that controls the opening and closing by spring force. Its function is to automatically open when the pressure of the system is too high to release excess gas. The opening of the exhaust valve 24 can cause the exhaust spring port to open as well, thereby further discharging excess gas. Through the cooperation of the exhaust valve 24 and the exhaust spring port, the system can effectively prevent overpressure and avoid damage to the equipment.

[0079] In some embodiments, the backflush valve 25 is provided on the air return circuit of the dryer 22 to control the backflush regeneration of the desiccant in the dryer 22 by the air returned after drying by the dryer 22, helping to blow out the adsorbed moisture and impurities, thereby restoring the moisture absorption capacity of the desiccant.

[0080] In some embodiments, the controller 26 is respectively connected to the air compressor 21, the pressure sensor 23, the exhaust valve 24 and the backflush valve 25, and is used to execute the control method of the intelligent air management system described in the above embodiments. The controller 26 receives real-time data from the sensors, judges the system state through a preset algorithm, and sends corresponding control signals through the vehicle bus (such as the CAN bus) to achieve precise control of the on-off states of the exhaust valve 24 and the backflush valve 25, ensuring that necessary evacuation and backflush regeneration operations can still be performed when the vehicle is turned off and powered down, thereby maintaining the air supply quality and the overall safety and reliability of the system.

[0081] For the intelligent air management system 2 according to an embodiment of the present invention, the controller 26 is respectively connected to the air compressor 21, the pressure sensor 23, the exhaust valve 24 and the backflush valve 25. By executing the control method of the intelligent air management system 2 described in the above embodiments, when the vehicle is in the state of being turned off and powered down, by obtaining the total amount of gas to be regenerated in the intelligent air management system 2 in real time, the drying state of the desiccant in the dryer 22 can be accurately judged, and then the on-off states of the exhaust valve 24 and the backflush valve 25 can be dynamically controlled. Thus, when the vehicle is not started, the backflush regeneration of the desiccant and the evacuation of the pipeline of the air compressor 21 can still be performed, so that the desiccant can continuously maintain good drying ability after the vehicle is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and at the same time effectively reducing the moisture residue in the pipeline. In addition, this method effectively prevents the problem of ice blockage in the pipeline caused by moisture residue in a low-temperature environment, improves the air supply quality of the air supply system, reduces the risk of brake system failure, and thus improves the stability and reliability of the air supply system and the brake system.

[0082] The following refers to Figure 5 Describe a vehicle according to an embodiment of the present invention.

[0083] Figure 5 is a block diagram of a vehicle according to an embodiment of the present invention, as Figure 5 shown, the vehicle 100 includes: a brake system 1, the intelligent air management system 2 described in the above embodiments, and an engine controller 3.

[0084] In some embodiments, the brake system 1 can be used to perform the braking operation of the vehicle 100. Specifically, the brake system 1 can use compressed air as the braking medium and control the brake shoes or brake discs through air pressure to achieve deceleration or stopping of the vehicle 100.

[0085] In some embodiments, the intelligent air management system 2 can be used to supply air to the brake system 1. Specifically, the intelligent air management system 2 is responsible for providing compressed and dried air to the brake system 1 to ensure that the air quality meets the braking requirements, thereby preventing the brake system 1 from failing due to low-temperature icing or excessive moisture.

[0086] In some embodiments, the engine controller 3 is connected to the controller of the air management system. The engine controller 3 sends the engine speed to the controller of the intelligent air management system 2, enabling the intelligent air management system 2 to precisely adjust the control strategy of the exhaust valve 24 according to the actual engine speed state. For example, when the engine speed drops from idle speed to zero speed, the power-off evacuation operation ends.

[0087] For the vehicle 100 according to the embodiment of the present invention, by connecting the engine controller 3 to the controller of the intelligent air management system 2, the engine speed is transmitted to the intelligent air management system 2 in real time. When the vehicle 100 is in the power-off state, the power-off evacuation operation can be precisely controlled according to the actual process of the engine from idle speed to zero speed. Thus, during the evacuation process, water and gas in the air compressor pipeline can be effectively removed, ensuring that the desiccant in the dryer 22 continuously maintains a good drying state after the engine is turned off, avoiding gradually losing the drying ability due to long-term adsorption of moisture, and preventing ice blockage problems caused by residual water in the pipeline in a low-temperature environment. The air supply quality of the air supply system is improved, the risk of failure of the braking system 1 is reduced, and thus the safety and reliability of the vehicle 100 are improved.

[0088] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for an intelligent air management system, characterized in that, The intelligent air management system includes an air compressor, a dryer, an exhaust valve, and a backflush valve. The dryer is connected to the air outlet of the air compressor, the exhaust valve is connected to the exhaust port of the air compressor, and the backflush valve is arranged on the air return circuit of the dryer to control the air reflux after drying by the dryer to backflush and regenerate the desiccant of the dryer. The control method includes: Determine that the vehicle is in the state of being turned off and powered down; Obtain the total amount of air to be regenerated in the intelligent air management system; Control the opening and closing states of the exhaust valve and the backflush valve according to the total amount of air to be regenerated.

2. The control method of the intelligent air management system according to claim 1, characterized in that, Controlling the opening and closing states of the exhaust valve and the backflush valve according to the total amount of air to be regenerated includes: When the total amount of air to be regenerated is greater than a preset air volume threshold, control both the exhaust valve and the backflush valve to open to perform power-down backflush and power-down evacuation simultaneously.

3. The control method of the intelligent air management system according to claim 2, characterized in that The control method further includes: After both the exhaust valve and the backflush valve are opened, in response to the total amount of air to be regenerated being less than or equal to the preset air volume threshold, close the exhaust valve and the backflush valve.

4. The control method of the intelligent air management system according to claim 1, characterized in that, Controlling the opening and closing states of the exhaust valve and the backflush valve according to the total amount of air to be regenerated includes: When the total amount of air to be regenerated is less than or equal to the preset air volume threshold, control the exhaust valve to open and the backflush valve to be in the closed state to perform only the power-down evacuation.

5. The control method of the intelligent air management system according to claim 4, wherein: Obtain the rotational speed value of the engine; When the rotational speed value is less than or equal to a preset rotational speed threshold, control the exhaust valve to close.

6. The control method of the intelligent air management system according to any one of claims 1-5, characterized in that The state of being turned off and powered down means that the vehicle key is in the OFF gear.

7. The control method of the intelligent air management system according to claim 6, characterized in that, The control method further includes: During the power-down backflush and the power-down evacuation, if it is detected that the vehicle key is switched from the OFF gear to the ON gear, immediately abort the current power-down backflush and power-down evacuation operations.

8. An electronic device, characterized in that, Includes: At least one processor; A memory communicatively connected to the at least one processor; The memory stores a computer program executable by the at least one processor, and when the computer program is executed, it implements the control method of the intelligent air management system according to any one of claims 1-7.

9. An intelligent air management system, characterized in that, Includes: An air compressor for compressing and pumping out air and suitable for supplying air to the braking system of the vehicle; A dryer connected to the air outlet of the air compressor for drying the compressed gas discharged from the air outlet of the air compressor; A pressure sensor for detecting the real-time pressure of the compressed gas; An exhaust valve connected to the exhaust port of the air compressor for controlling the exhaust of the air compressor; A backflush valve arranged on the air return circuit of the dryer to control the air reflux after drying by the dryer to backflush and regenerate the desiccant of the dryer A controller respectively connected to the air compressor, the pressure sensor, the exhaust valve, and the backflush valve for executing the control method of the intelligent air management system according to any one of claims 1-7.

10. A vehicle, characterized in that, Includes: A braking system; The intelligent air management system according to claim 9 for supplying air to the braking system; An engine controller, the engine controller is connected to the controller of the air management system, and the engine controller sends the rotational speed of the engine to the controller of the intelligent air management system.

Images