Air path regeneration method, control device, and vehicle

Abstract

The application discloses a gas circuit regeneration method, a control device and a vehicle. The gas circuit regeneration method comprises the following steps: switching the vehicle gas circuit to a pressure relief gas circuit, and allowing the gas to flow reversely through the drying tank when the pressure is relieved; continuously measuring the air pressure value in the pressure relief gas circuit and calculating the air pressure drop speed; when the air pressure drop speed is less than or equal to a preset threshold value, it is determined that the drying tank is in a regeneration standby state; and when the drying tank is in the regeneration standby state, the vehicle gas circuit is switched to a reverse blowing regeneration gas circuit to perform reverse blowing regeneration on the drying tank. The method uses the air resistance of the desiccant at different saturation degrees to obtain the health degree of the drying tank. Compared with the prior art, the method does not need to additionally set a humidity sensor, can utilize the pressure sensor in the existing vehicle gas circuit, obtains the health degree of the drying tank through a reasonable feedback mechanism, and performs gas reverse blowing regeneration on the drying tank in the regeneration standby state, so that the method can better cope with the complex and changeable driving environment.

Description

Technical Field

[0001] This invention relates to the technical field of automobile manufacturing, and particularly to a method for gas regeneration, a control device, and a vehicle. Background Technology

[0002] The air supply module is an important component of the air spring system or pneumatic braking system. During its operation, a dryer with regeneration function is required to prevent humid air from entering the air passage. Previous technologies for dryer regeneration typically used reverse air blowing at certain distances or operating times. This approach lacks a detection and feedback mechanism for the humidity status of the dryer tank, and in extreme environments with high humidity and large diurnal temperature variations, it cannot prevent water ingress into the air passage, leading to malfunctions.

[0003] To overcome the aforementioned shortcomings, related technologies have added a humidity sensor to the outlet of the dryer and controlled the regeneration backflushing of the dryer based on the detection data from the humidity sensor. Although the improved existing technology is more in line with practical needs, the installation of the humidity sensor increases costs, and the humidity sensor is at risk of failure. Summary of the Invention

[0004] The present invention aims to provide a gas path regeneration method to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] According to a first aspect of the present invention, a gas path regeneration method is applied to an air supply module, the air supply module having a main supply gas path connected to an air storage tank, a drying tank, and a plurality of gas path control valves. The plurality of gas path control valves control the on / off state of the main supply gas path to form at least a pressure relief gas path and a backflush regeneration gas path. The drying tank is located in the pressure relief gas path, and both the air storage tank and the drying tank are located in the backflush regeneration gas path. The gas path regeneration method includes:

[0006] Controlling the opening and closing of multiple gas path control valves to switch the main gas supply path to the pressure relief gas path, wherein the residual gas in the pressure relief gas path flows in reverse through the drying tank during pressure relief;

[0007] The gas pressure in the pressure relief gas path is continuously measured and the gas pressure drop rate is calculated. When the gas pressure drop rate is less than or equal to a preset threshold, the drying tank is determined to be in a state of waiting for regeneration.

[0008] When the drying tank is in the regeneration state, the opening and closing of multiple gas path control valves are controlled to switch the main gas supply path to the backflush regeneration gas path. The gas in the storage tank flows in the reverse direction through the backflush regeneration gas path to regenerate the drying tank.

[0009] The gas path regeneration method according to embodiments of the present invention has at least the following beneficial effects: Existing air supply modules all have pressure sensors. This method uses the gas resistance of the desiccant at different saturation levels to obtain the health status of the desiccant. During the gas depressurization process, the gas pressure value in the depressurization gas path can be continuously measured by the pressure sensor, thereby calculating the gas pressure drop rate in the depressurization gas path. Since the volume and cross-sectional area in the depressurization gas path are constant, the gas resistance of the desiccant can be roughly inferred from the gas pressure drop rate in the depressurization gas path, thereby obtaining the health status of the desiccant. Compared with the prior art, this method does not require an additional humidity sensor. It can utilize the pressure sensor of the existing air supply module and obtain the health status of the desiccant through a reasonable feedback mechanism, and perform gas backflushing regeneration on the desiccant in the regeneration state to better cope with the complex and ever-changing driving environment.

[0010] According to some embodiments of the present invention, before controlling the opening and closing of the plurality of gas path control valves to switch the main gas supply path to the pressure relief gas path, the method further includes: controlling the opening and closing of the plurality of gas path control valves to switch the main gas supply path to the pressure holding gas path, wherein the pressure holding gas path is the gas path when the pressure relief gas path is in a closed state; when the main gas supply path is switched to the pressure holding gas path, measuring the initial gas pressure in the pressure holding gas path, and determining whether to switch the main gas supply path to the pressure relief gas path based on the magnitude of the initial gas pressure.

[0011] According to some embodiments of the present invention, determining whether to switch the main supply air path to the pressure relief air path based on the magnitude of the initial air pressure includes: when the initial air pressure is greater than or equal to a set value, controlling the main supply air path to switch from the pressure holding air path to the pressure relief air path.

[0012] According to some embodiments of the present invention, a pressure sensor is provided in the pressure relief gas path, and the continuous measurement of the gas pressure value in the pressure relief gas path and the calculation of the gas pressure drop rate include: continuously measuring the gas pressure value in the pressure relief gas path through the pressure sensor, and calculating the gas pressure drop rate based on the gas pressure value.

[0013] According to some embodiments of the present invention, the gas path regeneration method further includes: when the main gas supply path is switched to the pressure relief gas path or the backflush regeneration gas path, the drying tank is connected to the atmosphere.

[0014] According to some embodiments of the present invention, after the gas in the gas storage tank flows in the reverse direction through the backflush regeneration gas path through the drying tank, the method further includes: controlling the opening and closing of a plurality of gas path control valves to switch the main gas supply path back to the pressure relief gas path, continuously measuring the gas pressure value in the pressure relief gas path and calculating the gas pressure drop rate; when the gas pressure drop rate is less than or equal to the preset threshold, determining that the drying tank is in an abnormal state.

[0015] According to some embodiments of the present invention, the gas path regeneration method further includes: issuing an abnormal signal to the user when the drying tank is in an abnormal state.

[0016] A control device according to a second aspect of the present invention includes a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the above-described gas path regeneration method.

[0017] According to a third aspect of the present invention, a vehicle includes an air-powered module and the control device described above, wherein the control device provides compressed gas to the air-powered module through the air supply module.

[0018] According to a fourth aspect of the present invention, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the above-described gas path regeneration method.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the air supply module provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the load air path provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the unloading air path provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the pressure relief air path provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the backflush regeneration gas path provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic flowchart of the gas path regeneration method provided in an embodiment of the present invention. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0030] like Figure 1 As shown, an embodiment of the present invention provides an air supply module, which includes a main air supply line, an air storage tank, a pressurizing air pump, a drying tank, a pressure sensor, and multiple air supply control valves. The main air supply line has a circulating air path, and the main air supply line introduces some branch channels in the circulating air path to meet different functional requirements.

[0031] The air supply module provides compressed gas to the vehicle's air-powered system. Specifically, the air-powered system can be an air spring module or a pneumatic brake module. For ease of explanation, this embodiment uses an air spring module as an example, which includes a left front wheel (FL) air spring, a right front wheel (FR) air spring, a left rear wheel (RL) air spring, and a right rear wheel (RR) air spring. The air path of the left front wheel air spring is equipped with a solenoid valve AV1, the air path of the right front wheel air spring is equipped with a solenoid valve AV2, the air path of the left rear wheel air spring is equipped with a solenoid valve AV3, and the air path of the right rear wheel air spring is equipped with a solenoid valve AV4. Different solenoid valves are used to control the connection and disconnection between the corresponding air spring and the main air supply circuit to meet the requirements of air suspension operation. All solenoid valves are connected to the main air supply circuit through a first branch channel. When any air spring needs to be inflated or deflated, the corresponding solenoid valve opens, connecting that air spring to the main air supply circuit.

[0032] The pressurized air pump has two inlets and one outlet. The inlet of the drying tank is connected to the outlet of the pressurized air pump to dry the gas flowing through it. The storage tank is connected to a first flow channel and a second flow channel. The first flow channel is connected to one of the inlets of the pressurized air pump. A gas path control valve SV1 is installed on the first flow channel to control the opening and closing of the first flow channel. When the gas path control valve SV1 is open, the storage tank is connected to the pressurized air pump; when the gas path control valve SV1 is closed, the storage tank is not connected to the pressurized air pump. The second flow channel is connected to another air inlet of the pressurized air pump. All the solenoid valves of the air-source power module are connected to the second flow channel through their respective first branch channels. The second flow channel is equipped with air path control valves SV2, SV4, and SV3 in sequence along the direction from the air storage tank to the pressurized air pump. The outlet of the dryer is connected between air path control valves SV2 and SV4 in the second flow channel through the second branch channel. A throttling check valve is installed on the second branch channel. Air path control valve SV3 is located between the pressurized air pump and the air-source power module. The pressure sensor P / U is located between air path control valves SV3 and SV4 in the second flow channel. The pressure sensor is mainly used to detect the air pressure in the second flow channel connected to the air-source power module to ensure the normal operation of the air-source power module.

[0033] Meanwhile, the main gas supply line also includes an inlet channel, an exhaust channel, and a venting channel. The inlet and exhaust channels are connected to the channel between the pressurized air pump and the drying tank. The venting channel connects the gas control valves SV2 and SV4 in the second channel. An exhaust port is located at the end of the exhaust channel, and an exhaust control valve EV is located upstream of the exhaust port, connecting it to the atmosphere. When backflushing regeneration or checking the dryer's health is required, the exhaust control valve EV opens, allowing gas in the main gas supply line to be discharged to the outside through the exhaust port.

[0034] Ideally, the gas supply to the main gas path is kept constant. However, when the dryer is backflushed for regeneration or its health is checked, the gas supply to the main gas path is depleted, necessitating replenishment. To address this, an air inlet is located at the beginning of the inlet flow path. Downstream of the inlet, an air filter, a first one-way valve, and a power limiting valve are sequentially installed. The inlet is connected to a gas supply unit (not shown in the attached diagram), which can be an air pump. The first one-way valve provides unidirectional flow from the inlet towards the power limiting valve. When the gas supply to the main gas path is insufficient, the pressure difference across the power limiting valve increases, opening the power limiting valve in the inlet flow path. The gas supply unit then inputs gas into the inlet flow path, which is processed by the air filter and the dryer before being replenished to the main gas path. When the pressure difference across the power limiting valve decreases, the power limiting valve closes to limit the gas input.

[0035] The venting channel has a vent at its end, and a second one-way valve at the vent. This second one-way valve closes in one direction along the drying tank towards the vent. A maintenance screw is threaded onto the end of the second one-way valve; screwing in the maintenance screw opens the second one-way valve. The venting channel is mainly used for venting during maintenance and repairs, and the mechanical structure ensures the safety of technicians.

[0036] like Figure 1 and Figure 2 As shown, when air control valves SV1 and SV4 are open, while air control valves SV2, SV3, and EV are closed, the air control valves switch the supply from the main air circuit to the load air circuit. The gas in the storage tank is pressurized by the pressurizing pump and then flows forward through the drying tank for drying. The dried pressurized gas is then delivered to the first branch channels of the air-powered module to inflate the corresponding air springs. At this time, a pressure sensor detects the air pressure in the load air circuit. If the air pressure in the load air circuit is lower than a preset value, the pressure sensor feeds back the pressure signal to the vehicle electronic controller. Upon receiving the feedback signal, the vehicle electronic controller increases the power of the pressurizing pump or drives the air supply unit to ensure that the air pressure in the load air circuit is not lower than the preset value.

[0037] like Figure 1 and Figure 3 As shown, when air control valves SV2 and SV3 are open, and air control valves SV1, SV4, and EV are closed, the air control valves will switch the main air supply to the unloading air supply. The corresponding air spring of the air-powered module will release the gas. After the gas is pressurized by the pressurizing pump, it flows forward through the drying tank for drying. Then, the pressurized gas that has been dried is sent back to the storage tank for storage to maintain the air pressure in the storage tank.

[0038] like Figure 1 and Figure 4 As shown, when gas control valves SV4 and EV are open, while gas control valves SV1, SV2, and SV3 are closed, the gas control valves switch the main gas supply to the pressure relief gas path. The gas in the pressure relief gas path flows in reverse through the dryer and is discharged to the outside through the exhaust port. Before pressure relief, all gas control valves except SV4 are closed. At this time, the gas control valves switch the main gas supply to the pressure holding gas path. The pressure holding gas path is the gas path when the pressure relief gas path is closed, and the pressure sensor detects the initial pressure of the pressure holding gas path. During the pressure relief process, the pressure sensor continuously measures the gas pressure value in the pressure relief gas path and obtains the dryer's health status through a series of calculation formulas.

[0039] like Figure 1 and Figure 5 As shown, when air control valves SV2 and EV are open, and air control valves SV1, SV3, and SV4 are closed, the air control valves switch the main air supply to the backflush regeneration air supply. The gas in the storage tank flows backward through the dryer and is discharged to the outside through the exhaust port. When the dryer's health is insufficient, i.e., when the desiccant absorbs a certain amount of moisture, the drying effect of the dryer weakens or even fails. To help the dryer expel accumulated moisture and impurities and restore its normal moisture absorption function, dry air needs to be blown backward into the dryer to expel the accumulated moisture and impurities to the outside. This backflush regeneration process is crucial for maintaining the performance of the dryer and extending its service life.

[0040] Of course, in addition to the four air paths mentioned above, the main air supply can be switched to other functional air paths by opening and closing the air path control valve to meet different functional requirements.

[0041] like Figure 6 As shown, this embodiment of the invention also provides an air path regeneration method, which is applied to the above-mentioned air supply module. The air path regeneration method includes:

[0042] Step S100: The air supply module periodically performs a self-test. During the self-test, the main air supply path switches to the pressure-holding air path. The pressure sensor detects the initial air pressure in the pressure-holding air path and determines whether to proceed to the next step based on the initial air pressure. When the initial air pressure is higher than the preset value, it indicates that the air pressure in the pressure-holding air path is at a high level, with a large pressure difference compared to atmospheric pressure. During the gas depressurization process in the next step, the large pressure difference promotes gas flow, widening the range of measurement data and ensuring the accuracy of the measurement data. When the initial air pressure is lower than the preset value, it indicates that the air pressure in the pressure-holding air path is at a low level, with a small pressure difference compared to atmospheric pressure. During the gas depressurization process in the next step, the gas flow speed is too slow, the range of measurement data is narrow, and there is a large systematic error in data detection. Therefore, when the initial air pressure is greater than or equal to the set value, the air supply module proceeds to the next step of gas depressurization; otherwise, the air supply module continues to wait for the next self-test until the initial air pressure is greater than or equal to the set value.

[0043] Step S200: Under the condition of no command to adjust the air power module, the main air supply circuit is switched to the depressurization air circuit, and the gas flows in reverse through the dryer during depressurization. Since the air circuit control valves SV1, SV2, and SV3 of the main air supply circuit are all closed, and only the air circuit control valves SV4 and EV are open, the gas in the depressurization air circuit can only pass through the throttle check valve and the dryer in sequence, and finally be discharged to the outside from the exhaust port. For vehicles equipped with air spring modules or air brake modules, when the vehicle is in the parked state, the vehicle will not issue a command to adjust the air power module, so step S200 can be executed when the vehicle is in the parked state.

[0044] Step S300: The pressure sensor continuously measures the gas pressure in the depressurization gas path and calculates the gas pressure drop rate. When the gas pressure drop rate is less than or equal to a preset threshold, the dryer is determined to be in a state awaiting regeneration. This method utilizes the gas resistance of the desiccant at different saturation levels to obtain the health status of the dryer. During the gas depressurization process, the gas pressure in the depressurization gas path can be continuously measured by the pressure sensor, thereby calculating the gas pressure drop rate in the depressurization gas path. Since the volume and cross-sectional area of ​​the depressurization gas path are constant, the gas resistance of the desiccant can be roughly inferred from the gas pressure drop rate in the depressurization gas path, thus obtaining the health status of the dryer.

[0045] The detailed calculation process is as follows, based on the ideal gas law:

[0046] PV=nRT,

[0047] In the formula, P is the gas pressure; V is the gas volume; n is the gas quantity; R is the molar gas constant; and T is the gas temperature. Throughout the entire working process, V remains constant, and for simplicity, T is also assumed to be constant. In this case, P and n are proportional, leading to the following formula derivation:

[0048] P2 / P1=n2 / n1=m2 / m1,

[0049] In the formula, P2 and P1 are the pressure values ​​collected at the two times; m2 and m1 are the residual gas masses in the cavity at the corresponding collection times. During the two rapid collection processes of the pressure sensor, the flow velocity u and density ρ can be simplified as constants. Based on this, the following formula can be derived:

[0050] m2=m1-ρuAt,

[0051] u=(p1m1-p2m1) / ρAt,

[0052] For simplified calculation, the density ρ is taken as (ρ1+ρ2) / 2, ρ2V / ρ1V / ρ0V=P2 / P1 / P0, ρ=(P1+P2)*ρ0 / 2P0, and the flow velocity u can be roughly estimated as:

[0053] u=2(P1m1-P2m1)P0 / (P1+P2)ρ0At——Formula 1,

[0054] In the formula, A is the cross-sectional area; ρ0 is the standard atmospheric density; P0 is the standard atmospheric pressure; and P1 and P2 are two measurements taken by the pressure sensor.

[0055] Furthermore, according to Bernoulli's equation:

[0056] P2+ρ2u0 2 +ρ2gh=P0+ρ2u 2 +ρ2gh,

[0057] In the formula, u0 is the initial flow velocity inside the cavity, which is initially 0; u is the output flow velocity from the interception orifice, and since it is connected to the atmosphere, the air pressure here is P0; u 2 =2(P2-P0). After simplification, we get the following equation:

[0058] P2=u 2 +2P0——Formula 2,

[0059] By comparing the result calculated by Formula 2 with the measured P2, the actual impact of air resistance can be determined.

[0060] Since the above formula is a rough estimate, the actual use process requires correction using the gas resistance data of the drying tank to determine the allowable range of gas pressure drop rate from a specific pressure to a specific time within the allowable gas resistance range, which is the preset threshold mentioned above.

[0061] Step S400: When the dryer is in the regeneration-ready state, the main air supply line is switched to the backflush regeneration air line to perform backflush regeneration of the dryer. When the dryer is in the regeneration-ready state, the air supply control valves SV1, SV3, and SV4 of the main air supply line are all closed, and only the air supply control valves SV2 and EV are open. Therefore, the gas in the storage tank can only pass sequentially through the throttling check valve, the dryer, and finally be discharged to the outside from the exhaust port. During backflush regeneration, the gas flows in the reverse direction through the dryer. In order to help the dryer remove accumulated moisture and impurities and restore its normal moisture absorption function, dry air needs to be blown into the dryer in the reverse direction to remove the accumulated moisture and impurities to the outside. This backflush regeneration process is crucial for maintaining the performance of the dryer and extending its service life.

[0062] Step S500: After performing backflushing regeneration on the dryer, the main gas supply line is switched back to the pressure relief gas line. If the gas pressure drop rate in the pressure relief gas line is still less than or equal to a preset threshold, the dryer is determined to be in an abnormal state. Generally, the moisture absorption performance of the dryer can be largely restored after backflushing regeneration. If the dryer still does not perform as expected after backflushing regeneration, either the backflushing regeneration step was not implemented or the dryer has malfunctioned, so troubleshooting is required in the next step. Of course, before switching the main gas supply line back to the pressure relief gas line, a self-check is also required to ensure that the initial gas pressure in the pressure holding gas line is greater than or equal to the set value.

[0063] Step S600: When the dryer is in an abnormal state, the vehicle's electronic controller displays the abnormal information as a yellow icon on the central control interface to remind the user to manually perform gas backflushing regeneration via a button. When the user presses the backflushing regeneration button, the air supply module performs gas backflushing regeneration according to the control command. The execution process is no different from step S400, thus eliminating the fault caused by the automatic backflushing regeneration step not being implemented.

[0064] Step S700: After manually performing gas backflushing regeneration, the main gas supply line is switched back to the pressure relief gas line. If the gas pressure drop rate in the pressure relief gas line is still less than or equal to the preset threshold, the dryer is determined to be in a faulty state. Through the process of elimination, it can be determined that the dryer has malfunctioned, which is a fault that cannot be self-repaired. Of course, before switching the main gas supply line back to the pressure relief gas line, a self-check is required to ensure that the initial gas pressure in the pressure holding gas line is greater than or equal to the set value.

[0065] Step S800: When the dryer canister is in a faulty state, the vehicle's electronic controller will display the fault information with a red icon on the central control interface to remind the user to replace the dryer canister. The dryer canister is a consumable part; when it malfunctions, it can be replaced at a vehicle repair shop to avoid irreparable damage to the air supply module.

[0066] Compared with existing technologies, this technology does not require additional humidity sensors. It can utilize the pressure sensor of the existing air supply module and obtain the health status of the dryer through a reasonable feedback mechanism. It can also perform gas backflushing regeneration on the dryer in the regeneration-ready state to better cope with complex and ever-changing driving environments.

[0067] This invention also provides a control device, which includes a memory, a processor, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the gas path regeneration method of the above embodiments.

[0068] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the control device via a network.

[0069] The non-transient software program and instructions required to implement the methods of the above embodiments are stored in memory. When executed by a processor, the gas path regeneration method in the above embodiments is performed. For example, executing... Figure 6 The method steps S100 to S800.

[0070] Furthermore, this invention also provides a vehicle comprising an air-powered module and the aforementioned control device. The control device supplies compressed gas to the air-powered module via an air supply module. If the air-powered module is an air spring module, when compressed gas is injected into the air spring module, the air spring is inflated, thereby raising the vehicle's chassis height; when the air spring module returns the compressed gas to the air supply module, the air spring is deflated, thereby lowering the vehicle's chassis height. The vehicle uses the control device to control the inflation status of different air springs to adapt to complex and changing road environments.

[0071] The vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. It can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle must have an electric motor capable of outputting power or acting as a generator to store mechanical energy. When the vehicle is a new energy vehicle, it can be a hybrid or a pure electric vehicle.

[0072] Finally, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for performing the above-described gas path regeneration method. Exemplarily, the method executes... Figure 6 The method steps S100 to S800 are described above. It is worth noting that, since the computer-readable storage medium of this embodiment can execute the gas path regeneration method of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of this embodiment can be referred to the specific implementation and technical effects of the gas path regeneration method of any of the above embodiments.

[0073] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0074] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0075] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for regenerating an air circuit, applied to an air supply module, the air supply module being provided with a supply main air circuit, the supply main air circuit being connected with an air storage tank, a drying tank and a plurality of air circuit control valves, the plurality of air circuit control valves being used to control the on-off of the supply main air circuit to form at least a pressure relief air circuit and a back flushing regeneration air circuit, the drying tank being arranged in the pressure relief air circuit, the air storage tank and the drying tank being arranged in the back flushing regeneration air circuit, characterized in that, The gas path regeneration method comprises: controlling the on-off of the plurality of gas path control valves to switch the supply total gas path to the pressure relief gas path, residual gas in the pressure relief gas path flows reversely through the drying tank when pressure relief; continuously measuring the gas pressure value in the pressure relief gas path and calculating the gas pressure drop speed, when the gas pressure drop speed is less than or equal to a preset threshold, it is determined that the drying tank is in a regeneration standby state; when the drying tank is in the regeneration standby state, the on-off of the plurality of gas path control valves is controlled to switch the supply total gas path to the back flushing regeneration gas path, the gas in the gas storage tank flows reversely through the drying tank through the back flushing regeneration gas path to perform back flushing regeneration on the drying tank.

2. The gas path regeneration method according to claim 1, characterized by, Before the control of the on-off of the plurality of gas path control valves to switch the supply total gas path to the pressure relief gas path, further comprising: controlling the on-off of the plurality of gas path control valves to switch the supply total gas path to the pressure relief gas path, residual gas in the pressure relief gas path flows reversely through the drying tank when pressure relief; when the supply total gas path is switched to the pressure relief gas path, the initial gas pressure in the pressure relief gas path is measured, and whether the supply total gas path is switched to the pressure relief gas path is determined according to the size of the initial gas pressure.

3. The gas path regeneration method according to claim 2, characterized by, The determination of whether the supply total gas path is switched to the pressure relief gas path according to the size of the initial gas pressure comprises: when the initial gas pressure is greater than or equal to a set value, the supply total gas path is switched from the pressure relief gas path to the pressure relief gas path.

4. The gas path regeneration method according to claim 1 or 2, characterized by, The pressure relief gas path is provided with a pressure sensor, and the continuous measurement of the gas pressure value in the pressure relief gas path and the calculation of the gas pressure drop speed comprise: the gas pressure value in the pressure relief gas path is continuously measured by the pressure sensor, and the gas pressure drop speed is calculated according to the gas pressure value.

5. The gas path regeneration method according to claim 1, characterized by, The gas path regeneration method further comprises: when the supply total gas path is switched to the pressure relief gas path or the back flushing regeneration gas path, the drying tank is in communication with the atmosphere.

6. The gas path regeneration method according to claim 1, characterized by, After the gas in the gas storage tank flows reversely through the drying tank through the back flushing regeneration gas path, further comprising: controlling the on-off of the plurality of gas path control valves to switch the supply total gas path to the pressure relief gas path again, and continuously measuring the gas pressure value in the pressure relief gas path and calculating the gas pressure drop speed; when the gas pressure drop speed is less than or equal to the preset threshold, it is determined that the drying tank is in an abnormal state.

7. The gas path regeneration method according to claim 6, characterized by, The gas path regeneration method further comprises: when the drying tank is in the abnormal state, an abnormal signal is sent to the user.

8. A control device characterized by comprising: The control device comprises a memory and a processor, the memory stores a computer program, and the processor realizes the gas path regeneration method of any one of claims 1 to 7 when executing the computer program.

9. A vehicle characterized by comprising: The vehicle comprises an air energy power module and the control device of claim 8, and the control device provides compressed gas for the air energy power module through the air supply module.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program realizes the gas path regeneration method of any one of claims 1 to 7 when executed by the processor.

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