Air filter control method and device of fuel cell, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to an air filter control method and device of a fuel cell, a vehicle and a storage medium, a filter element of an air filter is provided with a detachable electric heating device, a first electronic three-way valve in an air inlet pipe of the air filter is connected with the air filter and a first air inlet pipe, and a second electronic three-way valve in an air outlet pipe of the air filter is connected with the air filter. The method comprises the steps that when the difference value of a first pressure value of an air filter output end and a second pressure value of an air filter input end is larger than a preset value, the output end of a first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of a second electronic three-way valve is controlled to be in a closed state; and meanwhile, the electric heating device is used for heating so as to volatilize pollutants in the air filter. Therefore, the problems of short service life and high maintenance cost of the filter element of the air inlet system of the fuel cell are solved, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an air filter control method, device, vehicle and storage medium for a fuel cell. Background Art

[0002] With the country's advocacy of energy conservation and emission reduction, the vigorous development of the new energy industry and electronic intelligent AI technology, the hydrogen fuel cell industry is gradually becoming the focus of the industry. However, in the intake system of hydrogen fuel cell vehicles, the maintenance and replacement of air filter elements (chemical filter elements) has become a pain point for many users. Chemical filter elements have a relatively short mileage and high cost. In addition, their adsorption capacity decreases with time of use and the demand for dust removal increases, which significantly shortens the service life of the filter element. Users have to frequently perform maintenance and replacement. Therefore, how to achieve long-term replacement and maintenance-free characteristics of chemical filter elements has become the focus of attention of the majority of users.

[0003] In the relevant technology, the air filter of the intake system of hydrogen fuel cell vehicles is similar in design structure to that of traditional fuel vehicles. Based on the air filter of traditional fuel vehicles, non-woven fabric with carbon adsorption function is used for filtering. However, the volume of the air filter is relatively large, resulting in high cost and maintenance cost, which needs to be solved urgently. Summary of the invention

[0004] The present application provides an air filter control method, device, vehicle and storage medium for a fuel cell to solve the problems of short service life and high maintenance cost of a filter element in an air intake system of a fuel cell, thereby increasing the service life of the filter element and reducing the maintenance cost of subsequent use.

[0005] The first aspect of the present application provides an air filter control method for a fuel cell, wherein the filter element of the air filter has a detachable electric heating device, the output end of a first electronic three-way valve in an air filter inlet pipe is connected to the air filter input end, the first input end of the first electronic three-way valve is connected to a first air inlet pipe, and the first end of a second electronic three-way valve in an air filter outlet pipe is connected to the output end of the air filter, wherein the method comprises the following steps:

[0006] Acquire a first pressure value of the air filter output end and a second pressure value of the air filter input end;

[0007] Determining whether a difference between the first pressure value and the second pressure value is greater than a preset value;

[0008] If the difference between the first pressure value and the second pressure value is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and the electric heating device is used for heating to volatilize pollutants in the air filter.

[0009] According to one embodiment of the present application, after heating by the electric heating device, the method further comprises:

[0010] Obtaining the current temperature of the electric heating device;

[0011] Determine whether the current temperature is greater than or equal to a preset temperature, and whether a duration during which the current temperature is greater than or equal to the preset temperature is greater than or equal to a first preset duration;

[0012] If the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, the first end of the second electronic three-way valve and the second end of the second electronic three-way valve are controlled to be in the open state, and the air compressor is controlled to start so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

[0013] According to an embodiment of the present application, after controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in the open state, the method further includes:

[0014] The third end of the second electronic three-way valve is controlled to be in the closed state, wherein the third end of the second electronic three-way valve is connected to the fuel cell stack.

[0015] According to one embodiment of the present application, after controlling the air compressor to start, the method further includes:

[0016] Obtaining the startup time of the air compressor equipment;

[0017] If the startup duration reaches a second preset duration, the first input end of the first electronic three-way valve is controlled to be in a closed state, and the second input end of the first electronic three-way valve is controlled to be in an open state, wherein the second input end of the first electronic three-way valve is connected to the second intake pipe, and the position of the second intake pipe is higher than the position of the first intake pipe.

[0018] According to an embodiment of the present application, after determining that the difference between the first pressure value and the second pressure value is greater than the preset value, the method further includes:

[0019] Generate air filter maintenance reminder information;

[0020] An acoustic reminder and / or an optical reminder is provided according to the air filter maintenance reminder information.

[0021] According to one embodiment of the present application, before controlling the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state, and controlling the first end of the second electronic three-way valve to be in a closed state, the method further includes:

[0022] Determine whether the current vehicle is in self-cleaning mode;

[0023] If the vehicle is not in the self-cleaning mode, the determination of whether the vehicle is in the self-cleaning mode is continued until the vehicle is in the self-cleaning mode.

[0024] According to the fuel cell air filter control method provided by the embodiment of the present application, when the difference between the first pressure value at the air filter output end and the second pressure value at the air filter input end is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and at the same time, an electric heating device is used for heating to volatilize pollutants in the air filter. Thus, the problems of short service life and high maintenance cost of the filter element of the fuel cell intake system are solved, and the service life of the filter element is increased.

[0025] In a second aspect, an embodiment of the present application provides an air filter control device for a fuel cell, wherein the filter element of the air filter has a detachable electric heating device, the output end of a first electronic three-way valve in an air filter inlet pipe is connected to the air filter input end, the first input end of the first electronic three-way valve is connected to a first air inlet pipe, and the first end of a second electronic three-way valve in an air filter outlet pipe is connected to the output end of the air filter, wherein the device comprises:

[0026] An acquisition module, used for acquiring a first pressure value of the air filter output end and a second pressure value of the air filter input end;

[0027] A judging module, used for judging whether the difference between the first pressure value and the second pressure value is greater than a preset value;

[0028] A control module is used to control the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state if the difference between the first pressure value and the second pressure value is greater than a preset value, and control the first end of the second electronic three-way valve to be in a closed state, and at the same time use the electric heating device to heat to volatilize pollutants in the air filter.

[0029] According to one embodiment of the present application, after heating is performed using the electric heating device, the control module is further used to:

[0030] Obtaining the current temperature of the electric heating device;

[0031] Determine whether the current temperature is greater than or equal to a preset temperature, and whether a duration during which the current temperature is greater than or equal to the preset temperature is greater than or equal to a first preset duration;

[0032] If the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, the first end of the second electronic three-way valve and the second end of the second electronic three-way valve are controlled to be in the open state, and the air compressor is controlled to start so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

[0033] According to one embodiment of the present application, after controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in the open state, the control module is further used to:

[0034] The third end of the second electronic three-way valve is controlled to be in the closed state, wherein the third end of the second electronic three-way valve is connected to the fuel cell stack.

[0035] According to one embodiment of the present application, after controlling the air compressor to start, the control module is further used to:

[0036] Obtaining the startup time of the air compressor equipment;

[0037] If the startup duration reaches a second preset duration, the first input end of the first electronic three-way valve is controlled to be in a closed state, and the second input end of the first electronic three-way valve is controlled to be in an open state, wherein the second input end of the first electronic three-way valve is connected to the second intake pipe, and the position of the second intake pipe is higher than the position of the first intake pipe.

[0038] According to an embodiment of the present application, after determining that the difference between the first pressure value and the second pressure value is greater than the preset value, the judgment module is further configured to:

[0039] Generate air filter maintenance reminder information;

[0040] An acoustic reminder and / or an optical reminder is provided according to the air filter maintenance reminder information.

[0041] According to one embodiment of the present application, before controlling the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state, and controlling the first end of the second electronic three-way valve to be in a closed state, the control module is further used to:

[0042] Determine whether the current vehicle is in self-cleaning mode;

[0043] If the vehicle is not in the self-cleaning mode, the determination of whether the vehicle is in the self-cleaning mode is continued until the vehicle is in the self-cleaning mode.

[0044] According to the fuel cell air filter control device provided by the embodiment of the present application, when the difference between the first pressure value at the air filter output end and the second pressure value at the air filter input end is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and at the same time, an electric heating device is used for heating to volatilize pollutants in the air filter. Thus, the problem of short service life and high maintenance cost of the fuel cell intake system filter element is solved, and the maintenance cost of later use is reduced.

[0045] A third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the air filter control method for the fuel cell as described in the above embodiment.

[0046] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the air filter control method for the fuel cell as described in the above embodiment.

[0047] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0049] Figure 1 It is a structural schematic diagram of an air filter control system of a fuel cell according to an embodiment of the present application;

[0050] Figure 2 A flowchart of an air filter control method for a fuel cell provided according to an embodiment of the present application;

[0051] Figure 3 is a block diagram of an air filter control device for a fuel cell according to an embodiment of the present application;

[0052] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application.

[0053] Figure markings: 1-air filter, 2-air filter inlet pipe, 3-air filter outlet pipe, 4-first sensor, 5-second sensor, 6-battery, 7-air compressor, 8-fuel cell stack, 9-control unit, 10-filter element, 11-electric heating device, 12-first electronic three-way valve, 13-first air inlet pipe, 14-second air inlet pipe, 15-second electronic three-way valve; 20-air filter control device of fuel cell, 100-acquisition module, 200-judgment module, 300-control module. DETAILED DESCRIPTION

[0054] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0055] The following describes the air filter control method, device, vehicle and storage medium of the fuel cell according to the embodiments of the present application with reference to the accompanying drawings.

[0056] Before introducing the air filter control method for a fuel cell according to an embodiment of the present application, the filter element cost and maintenance cost of a vehicle in the related art, as well as the air filter control system of the fuel cell involved in the air filter control method for a fuel cell according to the present application, are briefly introduced.

[0057] In the related technology, the air intake system of hydrogen fuel cell vehicles is similar in structure to that of traditional fuel vehicles. The main difference lies in the material and structure of the filter element. The filter element cost of traditional fuel vehicles is slightly lower, and the maintenance cost is generally acceptable. However, the air intake system filter element cost of hydrogen fuel cells is relatively high, and the maintenance cycle is also reduced accordingly, making it difficult for users to accept.

[0058] Therefore, based on the above situation, the present application proposes a fuel cell air filter control method, which solves the problems of short service life and high maintenance cost of the filter element of the hydrogen fuel cell intake system, increases the service life of the filter element, and reduces the maintenance cost of later use.

[0059] Furthermore, if Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the air filter control system of the fuel cell according to an embodiment of the present application.

[0060] Specifically, the air filter control system of the fuel cell includes an air filter 1, an air filter inlet pipe 2, an air filter outlet pipe 3, a first sensor 4, a second sensor 5, a battery 6, an air compressor 7, a fuel cell stack 8 and a control unit 9.

[0061] Among them, the filter element 10 of the air filter 1 has a detachable electric heating device 11, the output end of the first electronic three-way valve 12 in the air filter intake pipe 2 is connected to the input end of the air filter 1, the first input end of the first electronic three-way valve 12 is connected to the first intake pipe 13, the second input end of the first electronic three-way valve 12 is connected to the second intake pipe 14, the first end of the second electronic three-way valve 15 in the air filter outlet pipe 3 is connected to the output end of the air filter 1, the second end of the second electronic three-way valve 15 is connected to the air compressor 7, the third end of the second electronic three-way valve 15 is connected to the battery stack 8, the control unit 9 is respectively connected to the electric heating device 11, the first electronic three-way valve 12, the second electronic three-way valve 15 and the air compressor 7, and the electric heating device 11 is also connected to the battery 6. It should be noted that the first intake pipe 13 is a low-position intake pipe, and the second intake pipe 14 is a high-position intake pipe. During the operation of the fuel cell stack, the embodiment of the present application can determine the connectivity between the first input end of the first electronic three-way valve 12 and the first intake pipe 13, as well as the connectivity between the second input end of the first electronic three-way valve 12 and the second intake pipe 14 according to the actual environmental conditions. For example, in some cases where pollution is relatively low or there is no pollution, the present application controls the first input end of the first electronic three-way valve 12 and the second input end of the first electronic three-way valve 12 to be in an open state, or controls the first input end of the first electronic three-way valve 12 to be in an open state, or controls the second input end of the first electronic three-way valve 12 to be in an open state; in some cases where pollution is relatively high, in order to ensure the service life of the fuel cell stack, the embodiment of the present application can only open the high-position intake pipe, that is, control the second input end of the first electronic three-way valve 12 to be in an open state.

[0062] Optionally, the air compressor device 7 may be a brake air compressor, and the control unit 9 may be a FCU (Fuel-cell Control Unit, hydrogen fuel cell controller), which is not specifically limited here.

[0063] The following describes an air filter control method for a fuel cell applied to the above-mentioned air filter control system.

[0064] Specifically, Figure 2 A schematic flow chart of an air filter control method for a fuel cell provided in an embodiment of the present application.

[0065] like Figure 2 As shown, the air filter control method of the fuel cell includes the following steps:

[0066] In step S201, a first pressure value at an air filter output end and a second pressure value at an air filter input end are acquired.

[0067] Specifically, if Figure 1As shown, the embodiment of the present application can obtain the first pressure value of the air filter output end in real time through the first sensor 4 set at the air filter output end, and can obtain the second pressure value of the air filter input end in real time through the second sensor 5 set at the air filter input end.

[0068] In addition, the embodiment of the present application may also adopt other methods in the prior art to obtain the first pressure value of the air filter output end and the second pressure value of the air filter input end, which is not specifically limited here.

[0069] In step S202, it is determined whether the difference between the first pressure value and the second pressure value is greater than a preset value.

[0070] The preset value may be a value pre-set by a person skilled in the art, a value obtained through a limited number of experiments, or a value obtained through computer simulation, and is not specifically limited here.

[0071] Specifically, after obtaining a first pressure value at the air filter output end and a second pressure value at the air filter input end, a difference between the first pressure value and the second pressure value is calculated, and the difference is compared with a preset value.

[0072] It is understandable that as the air filter works for a long time, the adsorption and dust removal capacity of the air filter element will decrease. If the difference between the first pressure value and the second pressure value is greater than the preset value, it means that the vehicle air filter is abnormal and the air filter element needs to be further inspected or maintained. If the difference is less than or equal to the preset value, it means that the vehicle air filter is in normal working condition and no maintenance is required.

[0073] Furthermore, in some embodiments, after determining that the difference between the first pressure value and the second pressure value is greater than a preset value, it also includes: generating air filter maintenance reminder information; and performing acoustic reminders and / or optical reminders according to the air filter maintenance reminder information.

[0074] Specifically, when the difference between the first pressure value and the second pressure value is greater than a preset value, the system will generate an air filter maintenance reminder message, such as "The air filter pressure difference is too large, please check and maintain", and provide acoustic and / or optical reminders based on the air filter maintenance reminder message.

[0075] Optionally, the reminder method of the present application can be an acoustic reminder device that controls the vehicle to emit an alarm sound, such as a beeping sound, or a voice broadcast, such as the current vehicle chemical air filter element needs maintenance, etc. Reminders can also be made through optical reminder devices, such as flashing indicator lights in the vehicle, and the flashing type can be set in advance to correspond to the situation, or displayed through a logo on the vehicle display screen, such as transmitting an air filter maintenance reminder signal to the vehicle dashboard to indicate that the chemical air filter element needs maintenance.

[0076] During the specific implementation process, when it is determined that the difference between the first pressure value and the second pressure value is greater than the preset value, the air filter maintenance reminder can be given only by one of the acoustic reminder device or the optical reminder device, or by both the acoustic reminder device and the optical reminder device, which is not limited here.

[0077] In step S203, if the difference between the first pressure value and the second pressure value is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and at the same time, an electric heating device is used for heating to volatilize pollutants in the air filter.

[0078] It is understandable that the air filter of the fuel cell not only needs to filter out the dust in the air, but also needs to filter out harmful gases in the air, such as n-butane, toluene, sulfur dioxide, nitrogen dioxide, etc. Therefore, the present application adds an electric heating device in the middle of the air filter element and assembles it on the filter element body. At the same time, considering energy saving and environmental protection, the air filter element and the electric heating device of the present application are designed as a detachable structure. When the filter element needs to be replaced, the electric heating device must be disassembled first, and after replacing the new filter element, the electric heating device must be reassembled and installed in the air filter together.

[0079] Specifically, if the difference between the first pressure value and the second pressure value is greater than a preset value, a control instruction is issued through the control unit to control the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in a corresponding open state. At the same time, in order to prevent unfiltered harmful gases from entering the air filter outlet pipe, the first end of the second electronic three-way valve is controlled to be in a corresponding closed state. At the same time, the control unit issues a control instruction to control the battery to power the electric heating device in the heating filter element to volatilize pollutants in the air filter, such as harmful gases. It should be noted that since the battery stack is not in working state at this time, some pollutants in the air filter can pass through the pipeline between the electric heating device 11 and the output end of the first electronic three-way valve 12, the first electronic three-way valve 12, the pipeline between the first input end of the first electronic three-way valve 12 and the first intake pipe 13 in sequence, and finally be discharged through the first intake pipe 13.

[0080] Furthermore, in some embodiments, after heating with the electric heating device, it also includes: obtaining the current temperature of the electric heating device; judging whether the current temperature is greater than or equal to the preset temperature, and whether the duration for which the current temperature is greater than or equal to the preset temperature is greater than or equal to the first preset duration; if the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, then controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in an open state, and controlling the air compressor to start, so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

[0081] Optionally, the embodiment of the present application can obtain the current temperature of the electric heating device through a temperature sensor, and can also obtain the duration of the current temperature of the electric heating device being greater than or equal to the preset temperature through a timer, which is not specifically limited here. Preferably, the preset temperature can be 60°C, and the preset duration can be 20 minutes, which is not specifically limited here.

[0082] Specifically, after heating with the electric heating device, the current temperature of the electric heating device is continuously monitored. If the current temperature of the electric heating device is greater than or equal to the preset temperature, and the duration for which the current temperature is greater than or equal to the preset temperature is greater than or equal to the first preset duration, it indicates that the pollutants in the air filter have reached a certain degree of volatilization. At this time, the control unit issues a control instruction to control the first end of the second electronic three-way valve to be in an open state, and at the same time controls the second end of the second electronic three-way valve to be in an open state, and controls the air compressor to start the purge function to blow out the harmful gases volatilized in the chemical air filter and pollutants such as dust attached to the dirty side surface of the filter element, and discharge the pollutants through the air filter intake pipe side.

[0083] In addition, when the air compressor equipment reversely blows harmful gases volatilized in the chemical air filter and pollutants such as dust attached to the dirty side surface of the filter element, connecting the low-level air intake pipe is more conducive to the discharge of pollutants. In the embodiment of the present application, the first air intake pipe connected to the first input end of the first electronic three-way valve is a low-level air intake pipe. Therefore, after controlling the start of the air compressor equipment, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are maintained in the corresponding open state, which is convenient for the discharge of pollutants until the pollutants are discharged.

[0084] Further, in some embodiments, after controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in an open state, it also includes: controlling the third end of the second electronic three-way valve to be in a closed state, wherein the third end of the second electronic three-way valve is connected to the fuel cell stack.

[0085] It is understandable that if the third end of the second electronic three-way valve is opened during the process of using an air compressor to blow out volatilized pollutants in the air filter, gas that has not been completely purified or possible particulate matter will enter the fuel cell stack, thereby causing damage to the fuel cell stack. Therefore, in the embodiment of the present application, after controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in an open state, the third end of the second electronic three-way valve is controlled to be in a closed state, thereby preventing pollutants that have not been thoroughly cleaned from directly entering the fuel cell stack, reducing the impact of pollutants on the performance of the fuel cell stack, and extending the service life of the fuel cell stack.

[0086] Furthermore, in some embodiments, after controlling the start-up of the air compressor equipment, it also includes: obtaining the start-up duration of the air compressor equipment; if the start-up duration reaches a second preset duration, controlling the first input end of the first electronic three-way valve to be in a closed state, and controlling the second input end of the first electronic three-way valve to be in an open state, wherein the second input end of the first electronic three-way valve is connected to the second intake pipe, and the position of the second intake pipe is higher than the position of the first intake pipe.

[0087] Optionally, the embodiment of the present application can obtain the startup duration of the air compressor equipment through a timer, which is not specifically limited here.

[0088] Specifically, if the startup time of the air compressor does not reach the second preset time, it means that the pollutants in the air filter have not been purged. At this time, the pollutants in the air filter continue to be purged. If it is monitored that the startup time of the air compressor reaches the second preset time, it is determined that the pollutants in the air filter have been purged. At this time, the control unit sends a control instruction to close the first input end of the first electronic three-way valve (i.e., the port connected to the low-position intake pipe) and open the second input end of the first electronic three-way valve (i.e., the port connected to the high-position intake pipe). This can ensure that the airflow enters from the second intake pipe at a higher position and flows to the chemical air filter through the output end of the first electronic three-way valve, which helps to provide sufficient airflow pressure and flow when the air filter is working normally to ensure its filtering effect.

[0089] Furthermore, in some embodiments, before controlling the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state, and controlling the first end of the second electronic three-way valve to be in a closed state, it also includes: determining whether the current vehicle is in a self-cleaning mode; if the vehicle is not in a self-cleaning mode, continuously determining whether it is in a self-cleaning mode until the vehicle is in a self-cleaning mode.

[0090] Specifically, before the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and before the first end of the second electronic three-way valve is controlled to be in a closed state, that is, when the difference between the first pressure value of the air filter output end and the second pressure value of the air filter input end is greater than the preset value, it indicates that the air filter element may have accumulated a lot of pollutants, affecting the air circulation and filtering effect, and the vehicle air filter needs to be self-cleaned. Therefore, after the vehicle is parked in the parking space, the self-cleaning function is started, and after the self-cleaning function is started, it is determined whether the current vehicle is in the self-cleaning mode. If the vehicle has not entered the self-cleaning mode, the judgment is continued until it is confirmed that the vehicle has successfully entered the self-cleaning mode.

[0091] According to the fuel cell air filter control method proposed in the embodiment of the present application, when the difference between the first pressure value at the air filter output end and the second pressure value at the air filter input end is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and at the same time, an electric heating device is used for heating to volatilize pollutants in the air filter. In this way, the problem of short service life and high maintenance cost of the fuel cell intake system filter element is solved, and the maintenance cost of later use is reduced.

[0092] Next, an air filter control device for a fuel cell proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0093] Figure 3 It is a block diagram of an air filter control device for a fuel cell according to an embodiment of the present application.

[0094] In this embodiment, the filter element of the air filter has a detachable electric heating device, the output end of the first electronic three-way valve in the air filter intake pipe is connected to the air filter input end, and the first input end of the first electronic three-way valve is connected to the first intake pipe.

[0095] like Figure 3 As shown, the air filter control device 20 of the fuel cell includes: an acquisition module 100 , a judgment module 200 and a control module 300 .

[0096] Among them, the acquisition module 100 is used to obtain the first pressure value of the air filter output end and the second pressure value of the air filter input end; the judgment module 200 is used to judge whether the difference between the first pressure value and the second pressure value is greater than a preset value; the control module 300 is used to control the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state if the difference between the first pressure value and the second pressure value is greater than the preset value, and control the first end of the second electronic three-way valve to be in a closed state, and use an electric heating device to heat at the same time to volatilize pollutants in the air filter.

[0097] Furthermore, in some embodiments, after heating by the electric heating device, the control module 300 is also used to: obtain the current temperature of the electric heating device; determine whether the current temperature is greater than or equal to the preset temperature, and whether the duration for which the current temperature is greater than or equal to the preset temperature is greater than or equal to the first preset duration; if the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, then control the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in an open state, and control the air compressor to start so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

[0098] Further, in some embodiments, after controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in an open state, the control module is further configured to:

[0099] The third end of the second electronic three-way valve is controlled to be in a closed state, wherein the third end of the second electronic three-way valve is connected to the fuel cell stack.

[0100] Furthermore, in some embodiments, after controlling the start-up of the air compressor, the control module is also used to: obtain the start-up duration of the air compressor; if the start-up duration reaches a second preset duration, control the first input end of the first electronic three-way valve to be in a closed state, and control the second input end of the first electronic three-way valve to be in an open state, wherein the second input end of the first electronic three-way valve is connected to the second intake pipe, and the position of the second intake pipe is higher than the position of the first intake pipe.

[0101] Further, in some embodiments, after determining that the difference between the first pressure value and the second pressure value is greater than a preset value, the judgment module 200 is also used to: generate air filter maintenance reminder information; and perform acoustic reminders and / or optical reminders based on the air filter maintenance reminder information.

[0102] Further, in some embodiments, before controlling the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state, and controlling the first end of the second electronic three-way valve to be in a closed state, the control module 300 is also used to: determine whether the current vehicle is in a self-cleaning mode; if the vehicle is not in a self-cleaning mode, continue to determine whether it is in a self-cleaning mode until the vehicle is in a self-cleaning mode.

[0103] It should be noted that the above explanation of the embodiment of the fuel cell air filter control method is also applicable to the fuel cell air filter control device of this embodiment, and will not be repeated here.

[0104] According to the fuel cell air filter control device proposed in the embodiment of the present application, when the difference between the first pressure value at the air filter output end and the second pressure value at the air filter input end is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and at the same time, the electric heating device is used for heating to volatilize the pollutants in the air filter. In this way, the problems of short service life and high maintenance cost of the fuel cell intake system filter element are solved, and the maintenance cost of later use is reduced.

[0105] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0106] Memory 401 , processor 402 , and a computer program stored in the memory 401 and executable on the processor 402 .

[0107] When the processor 402 executes the program, the air filter control method for the fuel cell provided in the above embodiment is implemented.

[0108] Furthermore, the vehicle also includes:

[0109] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0110] The memory 401 is used to store computer programs that can be executed on the processor 402 .

[0111] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0112] If the memory 401, the processor 402 and the communication interface 403 are implemented independently, the communication interface 403, the memory 401 and the processor 402 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0113] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0114] The processor 402 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0115] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned air filter control method for a fuel cell is implemented.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0117] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0118] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0119] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0120] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0121] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0122] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0123] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fuel cell air filter control method, characterized in that: The filter element of the air filter has a detachable electric heating device, the output end of the first electronic three-way valve in the air filter inlet pipe is connected to the air filter input end, the first input end of the first electronic three-way valve is connected to the first air inlet pipe, and the first end of the second electronic three-way valve in the air filter outlet pipe is connected to the output end of the air filter, wherein the method comprises the following steps: Acquire a first pressure value of the air filter output end and a second pressure value of the air filter input end; Determining whether a difference between the first pressure value and the second pressure value is greater than a preset value; If the difference between the first pressure value and the second pressure value is greater than a preset value, the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve are controlled to be in an open state, and the first end of the second electronic three-way valve is controlled to be in a closed state, and the electric heating device is used for heating to volatilize pollutants in the air filter.

2. The method according to claim 1, characterized in that After heating by the electric heating device, the method further comprises: Obtaining the current temperature of the electric heating device; Determine whether the current temperature is greater than or equal to a preset temperature, and whether a duration during which the current temperature is greater than or equal to the preset temperature is greater than or equal to a first preset duration; If the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, the first end of the second electronic three-way valve and the second end of the second electronic three-way valve are controlled to be in the open state, and the air compressor is controlled to start so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

3. The method according to claim 2, characterized in that After controlling the first end of the second electronic three-way valve and the second end of the second electronic three-way valve to be in the open state, the method further includes: The third end of the second electronic three-way valve is controlled to be in the closed state, wherein the third end of the second electronic three-way valve is connected to the fuel cell stack.

4. The method according to claim 2, characterized in that: After controlling the air compressor to start, the method further includes: Obtaining the startup time of the air compressor equipment; If the startup duration reaches a second preset duration, the first input end of the first electronic three-way valve is controlled to be in a closed state, and the second input end of the first electronic three-way valve is controlled to be in an open state, wherein the second input end of the first electronic three-way valve is connected to the second intake pipe, and the position of the second intake pipe is higher than the position of the first intake pipe.

5. The method according to claim 1, characterized in that After determining that the difference between the first pressure value and the second pressure value is greater than the preset value, the method further includes: Generate air filter maintenance reminder information; An acoustic reminder and / or an optical reminder is provided according to the air filter maintenance reminder information.

6. The method according to claim 1, characterized in that Before controlling the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state, and controlling the first end of the second electronic three-way valve to be in a closed state, the method further includes: Determine whether the current vehicle is in self-cleaning mode; If the vehicle is not in the self-cleaning mode, the determination of whether the vehicle is in the self-cleaning mode is continued until the vehicle is in the self-cleaning mode.

7. An air filter control device for a fuel cell, characterized in that: The filter element of the air filter has a detachable electric heating device, the output end of the first electronic three-way valve in the air filter inlet pipe is connected to the air filter input end, the first input end of the first electronic three-way valve is connected to the first air inlet pipe, and the first end of the second electronic three-way valve in the air filter outlet pipe is connected to the output end of the air filter, wherein the device comprises: An acquisition module, used for acquiring a first pressure value of the air filter output end and a second pressure value of the air filter input end; A judging module, used for judging whether the difference between the first pressure value and the second pressure value is greater than a preset value; A control module is used to control the output end of the first electronic three-way valve and the first input end of the first electronic three-way valve to be in an open state if the difference between the first pressure value and the second pressure value is greater than a preset value, and control the first end of the second electronic three-way valve to be in a closed state, and at the same time use the electric heating device to heat to volatilize pollutants in the air filter.

8. The device according to claim 7, characterized in that After heating by the electric heating device, the control module is further used to: Obtaining the current temperature of the electric heating device; Determine whether the current temperature is greater than or equal to a preset temperature, and whether a duration during which the current temperature is greater than or equal to the preset temperature is greater than or equal to a first preset duration; If the current temperature is greater than or equal to the preset temperature, and the duration is greater than or equal to the first preset duration, the first end of the second electronic three-way valve and the second end of the second electronic three-way valve are controlled to be in the open state, and the air compressor is controlled to start so as to purge the volatilized pollutants in the air filter through the air compressor, wherein the second end of the second electronic three-way valve is connected to the air compressor.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the air filter control method for a fuel cell as claimed in any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the air filter control method for a fuel cell as described in any one of claims 1 to 6.

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