Maintenance method and system of air filter

Abstract

The invention discloses an air filter maintenance method which comprises the steps that maintenance parameters are obtained, the maintenance parameters comprise the actual pressure difference or the total air amount, the actual pressure difference is the actual pressure difference between an inlet pipeline and an outlet pipeline of an air filter, and the total air amount is the total amount of air flowing through the air filter; determining whether the maintenance parameters meet maintenance conditions; and under the condition that the maintenance parameters meet the maintenance conditions, indication information is reported, and the indication information is used for indicating maintenance of the air filter. Therefore, the total air amount and the actual pressure difference can more directly and accurately represent the condition of the filtering capacity of the air filter compared with the travel mileage or the driving duration of the vehicle, so that the situation that the filtering capacity of the air filter fails in advance when the vehicle does not reach the preset mileage or the preset duration can be avoided; the maintenance accuracy of the air filter is improved, the durability of the fuel cell is guaranteed, and the efficiency of the fuel cell is improved.

Description

Technical Field

[0001] The present application relates to the field of fuel cells, and in particular to a maintenance method and system for an air filter. Background Art

[0002] As a clean and efficient chemical power source, fuel cells can convert the chemical energy released by the chemical reaction between fuel and oxidant into electrical energy, with the advantages of high energy conversion efficiency and clean products. The fuel in the fuel cell can be hydrogen, and the oxidant can be oxygen in the air.

[0003] In fuel cells, as an important source of oxidants, the cleanliness of air will affect the performance and life of the fuel cell. In practical applications, an air filter can be configured in the fuel cell system to remove particulate matter in the air by physical filtration or to remove pollutants in the air by chemical filtration, thereby ensuring that the quality of the air entering the fuel cell meets the requirements.

[0004] However, during long-term operation, the filtering effect of the air filter may decrease. In order to ensure the stable operation of the fuel cell system, it is essential to perform regular maintenance on the air filter. Normally, the air filter can be maintained when the mileage of a vehicle equipped with an air filter reaches a predetermined mileage, or when the driving time of a vehicle equipped with an air filter reaches a predetermined time. However, if the environment in which the air filter is located is too harsh, for example, when the concentration of particulate matter in the air is too high, the filtering effect of the air filter may fail prematurely before the vehicle reaches the predetermined mileage or the predetermined time, thereby affecting the durability of the fuel cell system. Summary of the invention

[0005] The embodiment of the present application provides a maintenance method for an air filter to ensure the durability of a fuel cell system. In addition, the embodiment of the present application also provides a corresponding system, a controller, a computer-readable storage medium, and a computer program product.

[0006] In a first aspect, an embodiment of the present application provides a maintenance method for an air filter, comprising: obtaining maintenance parameters, the maintenance parameters including an actual pressure difference or a total amount of air, the actual pressure difference being the actual pressure difference between an inlet pipe and an outlet pipe of the air filter, and the total amount of air being the total amount of air flowing through the air filter; determining whether the maintenance parameters meet maintenance conditions; and if the maintenance parameters meet the maintenance conditions, reporting indication information, the indication information being used to indicate maintenance of the air filter.

[0007] In a possible implementation, the maintenance parameter further includes the concentration of toxic gas in the air flowing through the air filter, the toxic gas includes ammonia or sulfide, and the maintenance condition includes that the concentration of the toxic gas is greater than or equal to a first threshold.

[0008] In a possible implementation manner, the maintenance parameter includes the actual pressure difference, and the maintenance condition includes that the actual pressure difference is greater than or equal to a second threshold.

[0009] In one possible implementation, the maintenance parameter includes the actual pressure difference, and the method further includes: obtaining the actual flow rate of air flowing through the air filter; determining an initial pressure difference based on the actual flow rate, the initial pressure difference being the pressure difference between the inlet pipe and the outlet pipe when the flow rate of air flowing through the air filter in an initial state is the actual flow rate; the maintenance condition includes: the difference between the actual pressure difference and the initial pressure difference is greater than or equal to a third threshold value; or, the ratio between the actual pressure difference and the initial pressure difference is greater than or equal to a fourth threshold value; or, the ratio between the difference and the initial pressure difference is greater than or equal to a fifth threshold value.

[0010] In a possible implementation, the maintenance parameter includes the total air volume, and the method further includes: determining a usage scenario of the air filter; determining a sixth threshold value corresponding to the usage scenario based on the usage scenario, and the maintenance condition includes the total air volume being greater than or equal to the sixth threshold value.

[0011] In a possible implementation, the maintenance parameter includes the actual pressure difference, and the method further includes: obtaining actual mileage, the actual mileage being the actual mileage of the vehicle equipped with the air filter; determining the maintenance mileage based on the actual pressure difference and the actual mileage, the maintenance mileage being the remaining mileage that the vehicle is expected to travel before reporting the indication information, the maintenance mileage being negatively correlated with the actual pressure difference, and the maintenance mileage being positively correlated with the actual mileage; and reporting the maintenance mileage.

[0012] In one possible implementation, the reporting indication information includes: reporting the indication information to a display device configured on a vehicle, the vehicle being equipped with the air filter, or reporting the indication information to a network device configured on the vehicle, the network device being used to send the indication information via a network.

[0013] In a second aspect, an embodiment of the present application provides an air filter maintenance system, the system comprising a controller and the air filter, the controller comprising: an acquisition module, the acquisition module being used to acquire maintenance parameters, the maintenance parameters comprising an actual pressure difference or a total amount of air, the actual pressure difference being the actual pressure difference between an inlet pipe and an outlet pipe of the air filter, the total amount of air being the total amount of air flowing through the air filter; a determination module, the determination module being used to determine whether the maintenance parameters meet maintenance conditions; a reporting module, the reporting module being used to report indication information when the maintenance parameters meet the maintenance conditions, the indication information being used to indicate that maintenance of the air filter is to be performed.

[0014] In a possible implementation, the system further includes a sensing device, which is connected to the controller. The acquisition module is specifically used to obtain the maintenance parameters using the sensing device. The sensing device includes a differential pressure sensor or a flow meter. The differential pressure sensor is used to obtain the actual pressure difference, and the flow meter is used to obtain the total amount of air.

[0015] In a possible implementation, the maintenance parameter also includes the concentration of toxic gases in the air flowing through the air filter, and the sensing device also includes a toxic gas sensor, which is used to obtain the concentration of the toxic gas, and the toxic gas includes ammonia or sulfide.

[0016] In a third aspect, an embodiment of the present application provides a controller, comprising: an acquisition module, the acquisition module being used to acquire maintenance parameters, the maintenance parameters including actual pressure difference or total air volume, the actual pressure difference being the actual pressure difference between the inlet pipe and the outlet pipe of the air filter, the total air volume being the total amount of air flowing through the air filter; a determination module, the determination module being used to determine whether the maintenance parameters meet maintenance conditions; and a reporting module, the reporting module being used to report indication information when the maintenance parameters meet the maintenance conditions, the indication information being used to indicate maintenance of the air filter.

[0017] In a possible implementation, the maintenance parameter further includes the concentration of toxic gas in the air flowing through the air filter, the toxic gas includes ammonia or sulfide, and the maintenance condition includes that the concentration of the toxic gas is greater than or equal to a first threshold.

[0018] In a possible implementation manner, the maintenance parameter includes the actual pressure difference, and the maintenance condition includes that the actual pressure difference is greater than or equal to a second threshold.

[0019] In a possible implementation, the maintenance parameter includes the actual pressure difference, and the acquisition module is further used to: obtain the actual flow rate of air flowing through the air filter; the determination module is further used to: determine the initial pressure difference based on the actual flow rate, and the initial pressure difference is the pressure difference between the inlet pipe and the outlet pipe when the flow rate of air flowing through the air filter in the initial state is the actual flow rate; the maintenance condition includes: the difference between the actual pressure difference and the initial pressure difference is greater than or equal to a third threshold value; or, the ratio between the actual pressure difference and the initial pressure difference is greater than or equal to a fourth threshold value; or, the ratio between the difference and the initial pressure difference is greater than or equal to a fifth threshold value.

[0020] In a possible implementation, the maintenance parameter includes the total air volume, and the determination module is further used to: determine a usage scenario of the air filter; determine a sixth threshold value corresponding to the usage scenario based on the usage scenario, and the maintenance condition includes the total air volume being greater than or equal to the sixth threshold value.

[0021] In a possible implementation, the maintenance parameter includes the actual pressure difference, and the acquisition module is further used to: obtain the actual mileage, the actual mileage being the actual mileage of the vehicle equipped with the air filter; the determination module is further used to determine the maintenance mileage based on the actual pressure difference and the actual mileage, the maintenance mileage being the remaining mileage expected for the vehicle before reporting the indication information, the maintenance mileage being negatively correlated with the actual pressure difference, and the maintenance mileage being positively correlated with the actual mileage; the reporting module is further used to report the maintenance mileage.

[0022] In a possible implementation, the reporting module is specifically used to report the indication information to a display device configured on a vehicle, the vehicle being equipped with the air filter, or to report the indication information to a network device configured on the vehicle, the network device being used to send the indication information via a network.

[0023] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the air filter maintenance method in the first aspect.

[0024] In a fifth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computing device, enables the computing device to execute the air filter maintenance method in the first aspect of the above method.

[0025] In the above-mentioned implementation method of the embodiment of the present application, maintenance parameters are obtained, and the maintenance parameters include actual pressure difference or total air volume, where the actual pressure difference is the actual pressure difference between the inlet pipe and the outlet pipe of the air filter, and the total air volume is the total amount of air flowing through the air filter; it is determined whether the maintenance parameters meet the maintenance conditions; if the maintenance parameters meet the maintenance conditions, indication information is reported, and the indication information is used to indicate that the air filter should be maintained.

[0026] When there are too many particles (such as dust) in the air passing through the air filter, the actual pressure difference between the inlet and outlet pipes of the air filter will increase accordingly, that is, the actual pressure difference obtained can directly reflect the degree of the total amount of particles in the air passing through the air filter. When the total amount of air passing through the air filter is too much, the filtering capacity of the air filter is often worse, that is, the total amount of air obtained can directly reflect the degree of loss of the filtering capacity of the air filter. In this way, by obtaining the actual pressure difference or the total amount of air, and determining whether the actual pressure difference or the total amount of air meets the maintenance conditions, the indication of maintenance of the air filter can be reported when the maintenance conditions are not met. Since the total amount of air and the actual pressure difference can more directly and accurately characterize the filtering capacity of the air filter compared to the mileage or driving time of the vehicle, it is possible to avoid the premature failure of the filtering capacity of the air filter when the vehicle has not reached the predetermined mileage or the predetermined time, thereby improving the accuracy of the maintenance of the air filter, ensuring the durability of the fuel cell, and improving the efficiency of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the architecture of an air filter maintenance system in an embodiment of the present application;

[0029] Figure 2 A schematic flow chart of a method for maintaining an air filter in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of the corresponding relationship between the initial pressure difference and the actual flow rate in an initial state in an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of a controller in an embodiment of the present application. DETAILED DESCRIPTION

[0032] See also Figure 1 , is a schematic diagram of an air filter maintenance system 01 provided in this application. Figure 1 As shown, the air filter maintenance system 01 includes an air filter and a controller. Figure 1 The air filter 20 and the controller 10 are taken as an example. In actual application scenarios, the air filter maintenance system 01 can also include more controllers and air filters.

[0033] The air filter is connected to the air inlet of the fuel cell oxidant through the outlet pipe 51, and is connected to the atmosphere through the inlet pipe 52, so as to ensure that the quality of the air entering the fuel cell meets the requirements. The air filter 20 may include a physical filter module 21 to filter out particulate matter in the air by physical filtration; the air filter 20 may also include a chemical filter module 22 to filter out pollutants in the air by chemical filtration; the air filter may also include both the physical filter module 21 and the chemical filter module 22, which is not limited.

[0034] The controller 10 refers to a device with data processing and control capabilities, for example, the controller 10 may be a programmable logic controller (PLC), etc., without limitation. It should be noted that in other air filter maintenance systems, the controller 10 may also be replaced by a processor, for example, a central processing unit (CPU), etc., without limitation.

[0035] In addition, the controller 10 may be integrated with an acquisition module, wherein the acquisition module may be used to acquire relevant operating parameters of the air filter 20. Alternatively, the controller 10 may be connected to a sensor device, so that the acquisition module integrated in the controller 10 may use the sensor device to indirectly acquire relevant operating parameters of the air filter 20. The acquisition module or the sensor device may be configured in the air filter 20 or connected to the air filter 20 to acquire relevant operating parameters of the air filter 20, or may be connected to other devices associated with the air filter 20 (e.g., the outlet pipe 51, the inlet pipe 52) to acquire relevant operating parameters of the air filter 20, and this is not limited.

[0036] In addition, the controller 10 may integrate a storage module, wherein the storage module may be used to store data acquired by the controller 10, to be processed or processed, and the storage module may be, for example, a semiconductor memory, a magnetic memory, an optical memory, etc., which is not limited.

[0037] The controller 10 can be connected to the display device 31, so that the result of data processing is displayed through the display device 31. The display device 31 can be an instrument device on a vehicle equipped with the maintenance system 01 of the air filter, which is not limited to this. The controller 10 can also be connected to the network device 32, so that the result of data processing is sent to the network device 32, and then sent to other devices in the network by using the network device 32. For example, the controller 10 can send the result of data processing to the device at the after-sales service end of the vehicle through the network device 32, which is not limited to this.

[0038] It should be noted that the controller 10 and the sensor device, the display device 31 or the network device 32 may be connected via a bus, which may be, for example, a peripheral component interconnect express (PCIE) bus, etc. Alternatively, the processor 100 and the memory 201, and the processor 100 and the memory 202 may also be connected via a network, which may be, for example, a local area network (LAN), a wide area network (WAN), etc. in terms of coverage, and may be, for example, a wired network or a wireless network, etc. in terms of connection mode.

[0039] Generally, during long-term operation, the filtering effect of the air filter 20 may decrease. In order to ensure the stable operation of the fuel cell system, the air filter 20 may be maintained, for example, the air filter 20 may be replaced with a new one.

[0040] In actual application, when the mileage of a vehicle equipped with the air filter 20 reaches a predetermined mileage, or when the driving time of a vehicle equipped with the air filter 20 reaches a predetermined time, the air filter 20 may be maintained.

[0041] However, when the environment in which the air filter 20 is located is too harsh, for example, when the concentration of particulate matter in the air is too high, or when the presence of toxic gases in the air causes the chemical filter module 22 in the air filter 20 to fail prematurely, the filtering effect of the air filter 20 may fail prematurely before the vehicle has traveled a predetermined mileage or a predetermined duration, thereby affecting the durability of the fuel cell system.

[0042] Based on this, the controller 10 may include an acquisition module, which is used to acquire maintenance parameters, wherein the maintenance parameters include actual pressure difference or total air volume, the actual pressure difference is the actual pressure difference between the inlet pipe 52 and the outlet pipe 51 of the air filter 20, and the total air volume is the total amount of air flowing through the air filter 20. The controller 10 may also include a determination module, wherein the determination module is used to determine whether the maintenance parameters meet the maintenance conditions, and the maintenance conditions may be, for example, whether the maintenance parameters are greater than a preset threshold. The controller 10 may also include a reporting module, which is used to report indication information when the maintenance parameters meet the maintenance conditions, wherein the indication information is used to indicate that the air filter 20 is to be maintained.

[0043] When there are too many particles (such as dust) in the air passing through the air filter 20, the actual pressure difference between the inlet pipe 52 and the outlet pipe 51 of the air filter 20 will increase accordingly, that is, the actual pressure difference obtained by the controller 10 can directly reflect the total amount of particles in the air passing through the air filter 20. When the total amount of air passing through the air filter 20 is too much, the filtering capacity of the physical filter module 21 or the chemical filter module 22 of the air filter 20 becomes worse, that is, the total amount of air obtained by the controller 10 can directly reflect the degree of loss of the filtering capacity of the air filter 20. In this way, the controller can report an instruction to maintain the air filter 20 when the maintenance condition is not met by obtaining the actual pressure difference or the total amount of air and determining whether the actual pressure difference or the total amount of air meets the maintenance condition. Since the total amount of air and the actual pressure difference can more directly and accurately characterize the filtering capacity of the air filter 20 than the vehicle's mileage or driving time, it is possible to avoid the premature failure of the filtering capacity of the air filter 20 before the vehicle has reached a predetermined mileage or driving time, thereby improving the accuracy of air filter maintenance, ensuring the durability of the fuel cell, and improving the efficiency of the fuel cell.

[0044] It should be noted that the acquisition module of the controller 10 can use a sensing device to acquire maintenance parameters. The sensing device may include a pressure difference sensor 41, and the controller 10 may use the pressure difference sensor 41 to acquire the above-mentioned actual pressure difference; the sensing device may also include a flow meter 42, and the controller 10 may use the flow meter 42 to acquire the above-mentioned total air volume. In addition, the sensing device may also include other more sensors, which are not limited. For example, the sensing device may also include a toxic gas sensor 431 and a toxic gas sensor 432, wherein the toxic gas sensor 431 and the toxic gas sensor 432 are used to acquire the concentration of toxic gases in the air passing through the air filter 20.

[0045] Understandably, Figure 1The architecture of the air filter maintenance system 01 shown is merely an architecture example provided in the embodiment of the present application and is not limiting.

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, various non-limiting implementation methods in the embodiments of the present application are exemplarily described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0047] See also Figure 2 , Figure 2 A schematic diagram of a maintenance method for an air filter in an embodiment of the present application is shown. The method can be applied to Figure 1 The air filter maintenance system 01 shown in the figure may be applied to other applicable air filter maintenance systems. Figure 1 The maintenance of the air filter 20 by the air filter maintenance system 01 shown in FIG. Figure 2 As shown, the method may specifically include the following steps.

[0048] S201: The controller 10 obtains maintenance parameters, which include actual pressure difference or total air volume. The actual pressure difference is the actual pressure difference between the inlet pipe 52 and the outlet pipe 51 of the air filter 20 , and the total air volume is the total amount of air flowing through the air filter 20 .

[0049] The controller 10 may obtain a parameter related to whether the air filter 20 needs maintenance, ie, a maintenance parameter, so that the controller 10 may use the maintenance parameter to determine whether an indication of maintenance needs to be reported.

[0050] This embodiment provides the following specific implementation examples of maintenance parameters.

[0051] As a first implementation example, the maintenance parameter may include an actual pressure difference, which is the actual pressure difference between the inlet pipe 52 and the outlet pipe 51 of the air filter 20, and the unit may be Pascal. The inlet pipe 52 is connected to the atmosphere, and the outlet pipe 51 is connected to the fuel cell. It should be noted that since the inlet pipe is equivalent to the atmosphere, the actual pressure difference may also refer to the actual pressure difference between the atmosphere and the outlet pipe 51.

[0052] The controller 10 can obtain the actual pressure difference by using the pressure difference sensor 41, wherein the pressure difference sensor 41 can be connected to the inlet pipeline 52 (or atmosphere) and the outlet pipeline 51 respectively to obtain the actual pressure difference. It should be noted that the range of the pressure difference measured by the pressure difference sensor 41 needs to be greater than the maximum pressure difference between the inlet pipeline 52 and the outlet pipeline 51 of the air filter 20 in the initial state, wherein the initial state refers to the initial state of the air filter 20 after maintenance. Optionally, the range of the pressure difference measured by the pressure difference sensor 41 can be less than twice the above-mentioned maximum pressure difference, and thus, the accuracy of the pressure difference value measured by the pressure difference sensor 41 can be higher.

[0053] It is understandable that the more particulate matter the air passing through the air sensor 20 contains, the greater the filtering effect of the physical filtering module 21 of the air sensor 20 is consumed, and the greater the actual pressure difference between the inlet pipe 52 and the outlet pipe 51. In this way, the actual pressure difference can more directly reflect the total amount of particulate matter in the air passing through the air filter 20, and the parameter analysis using the actual pressure difference can also more accurately ensure the durability of the fuel cell.

[0054] As a second implementation example, the maintenance parameter may include a total air volume, where the total air volume is the total volume of air flowing through the air filter 20 , and the unit may be liter (L) or gram (g).

[0055] The controller 10 can obtain the total amount of air using the flow meter 42, wherein the flow meter 42 can be connected to the outlet pipeline 51 or the inlet pipeline 52 to obtain the flow rate of the air flowing through the pipeline, wherein the unit of the flow rate is liter per second (L / s) or gram per second (g / s). The flow meter 42 can continuously measure the value of the flow rate, and then the controller 10 (or the flow meter 42 with integrated flow integration function) can integrate the flow rate of the air in the target time period to obtain the total amount of air.

[0056] It is understandable that the more the total amount of air passes through the air sensor 20, the greater the filtering effect of the physical filter module 21 or the chemical filter module 22 of the air sensor 20 is consumed. In this way, the total amount of air can more directly reflect the degree of loss of the filtering capacity of the air filter 20, and parameter analysis using the total amount of air can more accurately ensure the durability of the fuel cell.

[0057] As a third implementation example, the maintenance parameter may include the concentration of toxic gases in the air flowing through the air filter 20, and the unit may be mole per liter (mol / L) or mole per gram (mol / g). Among them, the toxic gases may include ammonia, sulfide, carbon monoxide, etc. in the air, which may affect the durability of the fuel cell.

[0058] The controller 10 can use the toxic gas sensor to obtain the concentration of toxic gases in the air flowing through the air filter 20, such as Figure 1 The toxic gas sensor 431 shown may be, for example, an ammonia concentration sensor, and the toxic gas sensor 432 may be, for example, a sulfide concentration sensor. It should be noted that the toxic gas sensor 431 (similar to the toxic gas sensor 432) may be placed before the physical filter module 21 in the air filter, may be placed between the physical filter module 21 and the chemical filter module 22, or may be placed after the chemical filter module 22, without limitation.

[0059] In addition, the controller 10 can also use a flow meter to integrate the product of the concentration of the toxic gas and the flow rate of the air flowing through the pipeline, so as to obtain the total amount of the toxic gas in the target time period in moles (mol).

[0060] It is understandable that the higher the concentration of toxic gas in the air passing through the air sensor 20, or the greater the total amount of toxic gas passing through the air sensor 20, the greater the filtration effect of the chemical filtration module 22 of the air sensor 20 is consumed. In this way, the concentration or total amount of toxic gas can more directly reflect the degree of loss of the filtration capacity of the chemical filtration module 22, and parameter analysis using the concentration or total amount of toxic gas can more accurately ensure the durability of the fuel cell.

[0061] In actual application, the controller 10 may also obtain different maintenance parameters by referring to the above-mentioned similar methods, which will not be elaborated here.

[0062] S202: The controller 10 determines whether the maintenance parameter satisfies the maintenance condition.

[0063] The controller 10 may determine whether the maintenance parameter satisfies the maintenance condition, and then report an instruction to maintain the air filter 20 if the maintenance condition is satisfied. For example, the maintenance condition may be that the maintenance parameter determined by the controller 10 satisfies a certain value range or is greater than a certain threshold.

[0064] This embodiment provides the following specific implementation examples for the controller 10 to determine whether it meets the maintenance conditions according to different maintenance parameters.

[0065] As a first implementation example, for the actual pressure difference, the maintenance condition may include that the actual pressure difference is greater than or equal to a second threshold, based on which the controller 10 may determine whether the actual pressure difference is greater than or equal to the second threshold.

[0066] It should be noted that the second threshold value can be determined by a technician in a laboratory environment based on the average value of the actual pressure difference when the air filter 20 needs maintenance, and the second threshold value can be deployed in the controller 10 in advance or transmitted to the controller 10 through other components, without limitation.

[0067] Furthermore, since the actual pressure difference may have different values ​​under different air flow rates, generally, the greater the air flow rate through the air filter 20, the greater the actual pressure difference. Based on this, the controller 10 can obtain the actual flow rate of air flowing through the air filter 20 (for example, using the flow meter 42), and then, based on the actual flow rate, the controller 10 can determine the initial pressure difference, which is the pressure difference between the inlet pipe 52 and the outlet pipe 51 when the air flow rate through the air filter 20 is the actual flow rate in the initial state, wherein the initial state refers to the initial state of the air filter 20 after maintenance. Figure 3 As shown, it is a schematic diagram of the correspondence between the initial pressure difference and the actual flow rate in the initial state. The correspondence can be determined by a technician in a laboratory environment on the pressure difference of the air filter 20 at different actual flow rates in the initial state, and the correspondence can be deployed in the controller 10 in advance, or transmitted to the controller 10 through other components, without limitation.

[0068] Based on this, the maintenance condition may be that the difference between the actual pressure difference and the initial pressure difference is greater than or equal to the third threshold value, or the ratio between the actual pressure difference and the initial pressure difference is greater than or equal to the fourth threshold value, or the ratio between the above difference and the initial pressure difference is greater than or equal to the fifth threshold value. The above third threshold value, fourth threshold value and fifth threshold value may be determined by technicians in a laboratory environment with reference to the above description of the second threshold value, and will not be repeated here. In other implementations, the maintenance condition may also be a variation of the above content, for example, the difference between the initial pressure difference and the actual pressure difference may be less than or equal to a certain threshold value.

[0069] As a second implementation example, for the total amount of air, the maintenance condition may include that the total amount of air is greater than or equal to a sixth threshold, based on which the controller 10 may determine whether the actual pressure difference is greater than or equal to a second threshold. The sixth threshold may be determined by referring to the method for determining the second threshold above, which will not be described in detail herein.

[0070] Furthermore, since the total amount of air passing through the air filter 20 when maintenance is required may be different in different usage scenarios, the controller 10 may first determine the current usage scenario of the air filter 20, and then, based on the usage scenario, determine the sixth threshold value corresponding to the usage scenario by using the corresponding relationship between the usage scenario and the sixth threshold value, so that the controller 10 determines whether the total amount of air is greater than or equal to the sixth threshold value based on this.

[0071] It should be noted that the correspondence between the usage scenario and the sixth threshold value can be determined by a technician in a laboratory environment to determine the total amount of air when the air filter 20 needs maintenance under different usage scenarios, and the correspondence can be deployed in the controller 10 in advance or transmitted to the controller 10 through other components, without limitation.

[0072] As a third implementation example, for the concentration of toxic gas, the maintenance condition may include that the concentration of toxic gas is greater than or equal to a first threshold value, based on which the controller 10 may determine whether the concentration of toxic gas is greater than or equal to the first threshold value. The first threshold value may be determined by referring to the method for determining the second threshold value above, which will not be described in detail here.

[0073] In addition, different toxic gases may correspond to different first thresholds. For example, the toxic gas may be ammonia, for example, and the maintenance condition may be whether the concentration of ammonia passing through the air filter 20 is greater than the first threshold corresponding to ammonia; or, the toxic gas may be sulfide, for example, and the maintenance condition may be whether the concentration of sulfide passing through the air filter 20 is greater than the first threshold corresponding to sulfide.

[0074] In addition, for the total amount of toxic gas, reference may be made to the above description of the concentration of toxic gas, which will not be repeated here.

[0075] It should be noted that the above implementation is only an example. In actual application, the controller 10 can also determine whether the maintenance parameters meet the maintenance conditions through other implementations, and this is not limited.

[0076] S203 : When the maintenance parameter satisfies the maintenance condition, the controller 10 reports instruction information, where the instruction information is used to instruct to perform maintenance on the air filter 20 .

[0077] Based on step S201 and step S202 , the controller 10 may report indication information when the acquired maintenance parameters meet the maintenance conditions, wherein the indication information is used to instruct maintenance of the air filter.

[0078] For example, the indication information may be a predefined signaling, and the device receiving the signaling may clearly know that the air filter 20 needs to be maintained at this time. Alternatively, the indication information may be an electrical signal, and the device receiving the electrical signal may clearly know that the air filter 20 needs to be maintained at this time. In addition, the indication information may be in other implementation forms, or the indication information may include other indication contents, which are not limited.

[0079] Optionally, the controller 10 reports the indication information, for example, by reporting the indication information to a display device 31, wherein the display device 31 may be configured on a vehicle, and the vehicle is a vehicle equipped with the air filter 20. Alternatively, the controller 10 reports the indication information, for example, by reporting the indication information to a network device 32, wherein the network device 32 may be configured on the vehicle, and the network device 32 may send the indication information through a network (for example, it may be sent to an after-sales service terminal of the vehicle), so that the device or user receiving the indication information can clearly understand that the air filter 20 needs to be maintained at this time.

[0080] Furthermore, if the maintenance parameter includes the actual pressure difference, the controller 10 may also report the maintenance mileage, wherein the maintenance mileage is the remaining mileage that the vehicle is expected to travel before the controller 10 reports the above indication information, that is, how much mileage the vehicle can travel before reporting the above indication information.

[0081] For example, the controller 10 can obtain the actual mileage, wherein the actual mileage is the actual mileage of the vehicle equipped with the air filter 20; further, the controller 10 can determine the maintenance mileage according to the actual pressure difference and the actual mileage. Moreover, the maintenance mileage is negatively correlated with the actual pressure difference, and the maintenance mileage is positively correlated with the actual mileage, that is, the greater the actual pressure difference, the worse the filtering effect of the air filter 20, and the smaller the maintenance mileage. The greater the actual mileage, the smaller the increase in the pressure difference per unit mileage, and the greater the maintenance mileage.

[0082] Optionally, the controller 10 may calculate the actual mileage according to the following formula:

[0083]

[0084] Among them, Maintenance_mileage is the maintenance mileage, run_mileage is the actual mileage, is the actual pressure difference, is the initial pressure difference, It is the sum of the third threshold value and the initial pressure difference (or the product of the fourth threshold value and the initial pressure difference, or the product of the fifth threshold value and the initial pressure difference plus the value of the initial pressure difference).

[0085] The above formula 1 is only for illustrative purposes. In actual applications, the controller may also refer to other formulas to calculate the value of the maintenance mileage.

[0086] Optionally, the controller 10 may report the maintenance mileage to the display device 31 , or may report the maintenance mileage to the network device 32 , which is not limited.

[0087] In this embodiment, the processor 100 may adopt the steps described in the above steps S201 to S203 to continuously obtain maintenance parameters to continuously confirm whether the air filter 20 needs maintenance.

[0088] In addition, the present application also provides a controller, which can be Figure 1 The controller 10 in the air filter 01 can also be other controllers. Figure 4 , Figure 4 A schematic diagram of the structure of a controller in an embodiment of the present application is shown. Figure 4 The controller 400 shown includes:

[0089] An acquisition module 401, the acquisition module 401 is used to acquire maintenance parameters, the maintenance parameters include actual pressure difference or total air volume, the actual pressure difference is the actual pressure difference between the inlet pipe and the outlet pipe of the air filter, and the total air volume is the total amount of air flowing through the air filter;

[0090] A determination module 402, the determination module 402 is used to determine whether the maintenance parameter meets the maintenance condition;

[0091] The reporting module 403 is used to report indication information when the maintenance parameter meets the maintenance condition, and the indication information is used to instruct to maintain the air filter.

[0092] In a possible implementation, the maintenance parameter further includes the concentration of toxic gas in the air flowing through the air filter, the toxic gas includes ammonia or sulfide, and the maintenance condition includes that the concentration of the toxic gas is greater than or equal to a first threshold.

[0093] In a possible implementation manner, the maintenance parameter includes the actual pressure difference, and the maintenance condition includes that the actual pressure difference is greater than or equal to a second threshold.

[0094] In a possible implementation, the maintenance parameter includes the actual pressure difference, and the acquisition module 401 is also used to: obtain the actual flow rate of air flowing through the air filter; the determination module 402 is also used to: determine the initial pressure difference based on the actual flow rate, and the initial pressure difference is the pressure difference between the inlet pipe and the outlet pipe when the flow rate of air flowing through the air filter in the initial state is the actual flow rate; the maintenance condition includes: the difference between the actual pressure difference and the initial pressure difference is greater than or equal to a third threshold value; or, the ratio between the actual pressure difference and the initial pressure difference is greater than or equal to a fourth threshold value; or, the ratio between the difference and the initial pressure difference is greater than or equal to a fifth threshold value.

[0095] In a possible implementation, the maintenance parameter includes the total air volume, and the determination module 402 is further used to: determine a usage scenario of the air filter; determine a sixth threshold value corresponding to the usage scenario based on the usage scenario, and the maintenance condition includes that the total air volume is greater than or equal to the sixth threshold value.

[0096] In a possible implementation, the maintenance parameter includes the actual pressure difference, and the acquisition module 401 is further used to: obtain the actual mileage, the actual mileage being the actual mileage of the vehicle equipped with the air filter; the determination module 402 is further used to determine the maintenance mileage based on the actual pressure difference and the actual mileage, the maintenance mileage being the remaining mileage expected to be driven by the vehicle before reporting the indication information, the maintenance mileage being negatively correlated with the actual pressure difference, and the maintenance mileage being positively correlated with the actual mileage; the reporting module 403 is further used to report the maintenance mileage.

[0097] In a possible implementation, the reporting module 403 is specifically used to report the indication information to a display device configured on a vehicle, the vehicle being equipped with the air filter, or to report the indication information to a network device configured on the vehicle, the network device being used to send the indication information via a network.

[0098] It should be noted that the information interaction, execution process, etc. between the modules and units of the above-mentioned device are based on the same concept as the method embodiment in the embodiments of the present application, and the technical effects they bring are the same as those of the method embodiment in the embodiments of the present application. For specific contents, please refer to the description in the method embodiment shown in the aforementioned embodiments of the present application, and will not be repeated here.

[0099] In addition, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the air filter maintenance method described in the above method embodiment.

[0100] In addition, an embodiment of the present application also provides a computer program product containing instructions, which, when executed on a computing device, enables the computing device to execute the air filter maintenance method described in the above method embodiment.

[0101] The "first" in the names such as "first threshold" mentioned in the embodiments of the present application is only used as a name identifier and does not mean the first in order. The same rule applies to "second", "third", etc.

[0102] Through the description of the above implementation methods, it can be known that those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment method can be implemented by means of software plus a general hardware platform. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a storage medium, such as a read-only memory (ROM) / RAM, a magnetic disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in each embodiment of the present application or some parts of the embodiments.

[0103] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only schematic, in which the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0104] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A method for maintaining an air filter, characterized in that: The method comprises: Acquiring maintenance parameters, wherein the maintenance parameters include actual pressure difference or total air volume, wherein the actual pressure difference is the actual pressure difference between the inlet pipeline and the outlet pipeline of the air filter, and the total air volume is the total amount of air flowing through the air filter; determining whether the maintenance parameters meet maintenance conditions; When the maintenance parameter satisfies the maintenance condition, instruction information is reported, where the instruction information is used to instruct maintenance of the air filter.

2. The method according to claim 1, characterized in that The maintenance parameters also include the concentration of toxic gases in the air flowing through the air filter, the toxic gases include ammonia or sulfide, and the maintenance conditions include the concentration of the toxic gases being greater than or equal to a first threshold.

3. The method according to claim 1, characterized in that The maintenance parameter includes the actual pressure difference, and the maintenance condition includes the actual pressure difference being greater than or equal to a second threshold.

4. The method according to claim 1, characterized in that: The maintenance parameter includes the actual pressure difference, and the method further includes: obtaining an actual flow rate of air flowing through the air filter; Determine an initial pressure difference according to the actual flow rate, wherein the initial pressure difference is a pressure difference between the inlet pipeline and the outlet pipeline when the flow rate of air flowing through the air filter in an initial state is the actual flow rate; The maintenance conditions include: The difference between the actual pressure difference and the initial pressure difference is greater than or equal to a third threshold; Alternatively, a ratio between the actual pressure difference and the initial pressure difference is greater than or equal to a fourth threshold; Or the ratio of the difference to the initial pressure difference is greater than or equal to a fifth threshold.

5. The method according to claim 1, characterized in that The maintenance parameter includes the total amount of air, and the method further includes: Determining a usage scenario of the air filter; According to the usage scenario, a sixth threshold value corresponding to the usage scenario is determined, and the maintenance condition includes that the total air volume is greater than or equal to the sixth threshold value.

6. The method according to claim 1, characterized in that The maintenance parameter includes the actual pressure difference, and the method further includes: Obtaining actual mileage, where the actual mileage is the actual mileage traveled by the vehicle equipped with the air filter; determining a maintenance mileage according to the actual pressure difference and the actual mileage, wherein the maintenance mileage is a remaining mileage that the vehicle is expected to travel before reporting the indication information, the maintenance mileage is negatively correlated with the actual pressure difference, and the maintenance mileage is positively correlated with the actual mileage; Report stated maintenance mileage.

7. The method according to claim 1, characterized in that The report indication information includes: reporting the indication information to a display device disposed on a vehicle, the vehicle being equipped with the air filter, Alternatively, the indication information is reported to a network device configured on the vehicle, and the network device is used to send the indication information through a network.

8. An air filter maintenance system, characterized in that: The system comprises a controller and the air filter, wherein the controller comprises: an acquisition module, the acquisition module being used to acquire maintenance parameters, the maintenance parameters including actual pressure difference or total air volume, the actual pressure difference being the actual pressure difference between the inlet pipe and the outlet pipe of the air filter, the total air volume being the total volume of air flowing through the air filter; A determination module, the determination module is used to determine whether the maintenance parameter meets the maintenance condition; A reporting module, wherein the reporting module is used to report indication information when the maintenance parameters meet the maintenance conditions, wherein the indication information is used to instruct maintenance of the air filter.

9. The method according to claim 8, characterized in that The system also includes a sensing device, which is connected to the controller. The acquisition module is specifically used to use the sensing device to acquire the maintenance parameters. The sensing device includes a pressure difference sensor or a flow meter. The pressure difference sensor is used to acquire the actual pressure difference, and the flow meter is used to acquire the total amount of air.

10. The method according to claim 8, characterized in that The maintenance parameters also include the concentration of toxic gases in the air flowing through the air filter. The sensing device also includes a toxic gas sensor, which is used to obtain the concentration of the toxic gas. The toxic gas includes ammonia or sulfide.

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