Fuel cell air filter system and control method, device and storage medium thereof

Abstract

The application relates to the technical field of fuel cells, and discloses a fuel cell air filter system, a control method and device thereof and a storage medium, the system comprising: a first air filter device, which is used for filtering dust in air entering a fuel cell stack, the input end of the first air filter device being connected with a first electronic valve, and the output end of the first air filter device being connected with a second electronic valve; the first electronic valve being connected with a first air pipe and a second air pipe; a second air filter device, which is used for filtering harmful gas in air entering the fuel cell stack, the input end of the second air filter device being connected with a third electronic valve, and the output end of the second air filter device being connected with a fourth electronic valve; the second electronic valve being connected with the third electronic valve, the third electronic valve being connected with a third air pipe, and the fourth electronic valve being connected with the fuel cell stack. Thus, power economy is improved, the filtering mode of the air filter system is adjusted, the service life of a filter core is prolonged, and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to an air filter system for a fuel cell, a control method for an air filter system for a fuel cell, a control device for an air filter system for a fuel cell, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the development of energy conservation and emission reduction, the new energy industry, and electronic intelligent technology, the hydrogen fuel cell industry has attracted much attention. However, in the intake system of hydrogen fuel cells, power economy and the maintenance and replacement of air filter elements are receiving increasing attention. Chemical filters have a relatively short service life and high cost. Furthermore, their adsorption capacity decreases over time, and the need for dust removal increases, significantly shortening their lifespan. Users are forced to perform frequent maintenance and replacements. Therefore, the long-cycle replacement and maintenance-free characteristics of chemical filters have attracted widespread attention from users.

[0003] In related technologies, the air filter of the intake system of hydrogen fuel cells is currently similar in design structure to that of gasoline vehicles. It uses non-woven fabric with carbon adsorption function for filtration based on the air filter of gasoline vehicles. However, the air filter has a large volume, resulting in high cost and maintenance cost, reducing the user experience, which urgently needs to be solved. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, the first objective of this invention is to provide an air filter system for a fuel cell that can solve the problems of short filter element lifespan and high maintenance costs in fuel cell air filter systems, improve the power economy of the fuel cell, and allow for adjustment of the air filter system's filtration mode according to actual conditions to avoid excessive intake performance, thereby increasing filter element lifespan and reducing maintenance costs.

[0005] The second objective of this invention is to provide a control method for an air filter system of a fuel cell.

[0006] The third objective of this invention is to provide a control device for an air filter system of a fuel cell.

[0007] The fourth objective of this invention is to provide an electronic device.

[0008] The fifth objective of this invention is to provide a computer-readable storage medium.

[0009] To achieve the above objectives, a first aspect of the present invention provides an air filtration system for a fuel cell, comprising: a first air filter device for filtering dust from the air entering the fuel cell stack; the input end of the first air filter device is connected to a first electronic valve, and the output end of the first air filter device is connected to a second electronic valve; the first electronic valve is connected to a first vent pipe and a second vent pipe; a first sensor is provided at the input end of the first air filter device; a second sensor is provided at the output end of the first air filter device; a second air filter device for filtering harmful gases from the air entering the fuel cell stack; the input end of the second air filter device is connected to a third electronic valve, and the output end of the second air filter device is connected to a fourth electronic valve; the second electronic valve is connected to the third electronic valve, the third electronic valve is connected to a third vent pipe, and the fourth electronic valve is connected to the fuel cell stack; a third sensor is provided at the input end of the third electronic valve; and a fourth sensor is provided at the output end of the second air filter device.

[0010] In addition, the air filtration system of the fuel cell according to the above embodiments of the present invention may also have the following additional technical features: According to some embodiments of the present invention, the filter element of the second air filter is provided with a detachable electric heating device, which is used to assist in the volatilization of harmful gases in the second air filter.

[0011] According to some embodiments of the present invention, a first end of a first electronic valve is connected to a second vent pipe, a second end of a first electronic valve is connected to an input end of a first air filter, a third end of a first electronic valve is connected to a third end of a second electronic valve, and a fourth end of a first electronic valve is connected to a first vent pipe; an output end of a first air filter is connected to a first end of a second electronic valve, a second end of a second electronic valve is connected to a first end of a third electronic valve, a second end of a third electronic valve is connected to an input end of a second air filter, a third end of a third electronic valve is connected to a third end of a fourth electronic valve, a fourth end of a third electronic valve is connected to a third vent pipe, an output end of a second air filter is connected to a first end of a fourth electronic valve, a second end of a fourth electronic valve is connected to a fuel cell stack, and a fuel cell stack is connected to a fourth end of a fourth electronic valve.

[0012] According to an embodiment of the present invention, an air filtration system for a fuel cell includes: a first air filter device for filtering dust from the air entering the fuel cell stack; the input end of the first air filter device is connected to a first electronic valve, and the output end of the first air filter device is connected to a second electronic valve; the first electronic valve is connected to a first vent pipe and a second vent pipe; a first sensor is provided at the input end of the first air filter device; a second sensor is provided at the output end of the first air filter device; a second air filter device for filtering harmful gases from the air entering the fuel cell stack; the input end of the second air filter device is connected to a third electronic valve, and the output end of the second air filter device is connected to a fourth electronic valve; the second electronic valve is connected to the third electronic valve, the third electronic valve is connected to a third vent pipe, and the fourth electronic valve is connected to the fuel cell stack; a third sensor is provided at the input end of the third electronic valve; and a fourth sensor is provided at the output end of the second air filter device. Therefore, this system can solve the problems of short filter life and high maintenance cost of fuel cell air filter system, improve the power economy of fuel cell, and adjust the filtration mode of air filter system according to actual conditions to avoid excessive intake performance, improve filter life and reduce maintenance costs.

[0013] The second objective of this invention is to propose a control method for an air filter system of a fuel cell, which can solve the problems of short filter element lifespan and high maintenance costs in the air filter system of a fuel cell, improve the power economy of the fuel cell, adjust the filtration mode of the air filter system according to the actual situation, avoid excessive intake performance, increase the lifespan of the filter element, and reduce maintenance costs.

[0014] To achieve the above objectives, a second aspect of the present invention provides a control method for an air filter system of a fuel cell, applied to the aforementioned air filter system of the fuel cell. The method includes: determining the filtration mode of the air filter system of the fuel cell according to environmental conditions; and controlling the operating states of a first electronic valve, a second electronic valve, a third electronic valve, a fourth electronic valve, a first air filter device, and a second air filter device according to the filtration mode.

[0015] In addition, the control method for the air filter system of the fuel cell according to the above embodiments of the present invention may also have the following additional technical features: According to some embodiments of the present invention, the filtration mode includes an economic mode; controlling the operating state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the fourth end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0016] According to some embodiments of the present invention, the filtration mode includes a dustproof mode; controlling the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0017] According to some embodiments of the present invention, the filtration mode includes a rain and snow protection mode; controlling the operating state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the fourth end of the first electronic valve to be connected to the third end, controlling the third end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0018] According to some embodiments of the present invention, the filtration mode includes a comprehensive protection mode; the operation of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter is controlled according to the filtration mode, including: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0019] According to some embodiments of the present invention, the above method further includes: acquiring the exhaust gas concentration detected by the fourth sensor; in response to the exhaust gas concentration being greater than a preset concentration threshold, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the second end, and controlling the first end of the fourth electronic valve to connect with the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and to filter out harmful gases in the air entering the fuel cell stack through the second air filter device.

[0020] According to some embodiments of the present invention, the above method further includes: in response to the exhaust gas concentration not being greater than a preset concentration threshold, controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the third end, and controlling the third end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device.

[0021] According to some embodiments of the present invention, the method further includes: acquiring the intake pressure detected by the first sensor and the exhaust pressure detected by the second sensor; calculating a first difference between the intake pressure and the exhaust pressure; determining whether the first difference is greater than a first preset difference; in response to the first difference being greater than the first preset difference, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the third end, controlling the second end of the third electronic valve to connect with the fourth end, controlling the first end of the fourth electronic valve to connect with the second end, and controlling the third end of the fourth electronic valve to connect with the fourth end, so as to purge the dust in the first air filter device through the air intake device of the electric stack air compressor and discharge it through the first vent pipe; wherein the air intake device of the electric stack air compressor is connected to the third vent pipe.

[0022] According to some embodiments of the present invention, the method further includes: acquiring the intake air concentration detected by the third sensor and the exhaust air concentration detected by the fourth sensor; calculating a second difference between the intake air concentration and the exhaust air concentration; determining whether the second difference is greater than a second preset difference; in response to the second difference being greater than the second preset difference, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the third end, controlling the second end of the third electronic valve to connect with the fourth end, controlling the second end of the fourth electronic valve to connect with the third end, and controlling the first end of the fourth electronic valve to connect with the fourth end, so as to purge the harmful gas in the second air filter device through the air intake device of the electric stack air compressor and discharge it through the third vent pipe; wherein the air intake device of the electric stack air compressor is connected to the first vent pipe.

[0023] According to the control method of the air filter system of the fuel cell according to an embodiment of the present invention, the filtration mode of the air filter system of the fuel cell is first determined according to the environmental conditions, and then the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter device, and the second air filter device is controlled according to the filtration mode. Therefore, this method can solve the problems of short filter element lifespan and high maintenance costs in the air filter system of the fuel cell, improve the power economy of the fuel cell, adjust the filtration mode of the air filter system according to actual conditions, avoid excessive intake performance, increase the lifespan of the filter element, and reduce maintenance costs.

[0024] The third objective of this invention is to provide a control device for an air filter system of a fuel cell, which can solve the problems of short filter element lifespan and high maintenance costs in the air filter system of a fuel cell, improve the power economy of the fuel cell, adjust the filtration mode of the air filter system according to actual conditions, avoid excessive intake performance, increase the lifespan of the filter element, and reduce maintenance costs.

[0025] To achieve the above objectives, a third aspect of the present invention provides a control device for an air filter system of a fuel cell, comprising: a determination module configured to determine the filtration mode of the air filter system of the fuel cell according to environmental conditions; and a control module configured to control the operating states of a first electronic valve, a second electronic valve, a third electronic valve, a fourth electronic valve, a first air filter device, and a second air filter device according to the filtration mode.

[0026] A control device for a fuel cell air filter system according to an embodiment of the present invention includes: a determining module configured to determine the filtration mode of the fuel cell air filter system based on environmental conditions; and a control module configured to control the operating states of a first electronic valve, a second electronic valve, a third electronic valve, a fourth electronic valve, a first air filter, and a second air filter based on the filtration mode. Therefore, this device can solve the problems of short filter element lifespan and high maintenance costs in fuel cell air filter systems, improve the power economy of fuel cells, adjust the filtration mode of the air filter system according to actual conditions, avoid excessive intake performance, extend filter element lifespan, and reduce maintenance costs.

[0027] To achieve the above objectives, a fourth aspect of the present invention provides an electronic device, comprising: a processor and a memory, wherein the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the control method for the air filter system of the fuel cell described above.

[0028] According to the electronic device of the present invention, by executing the above-described control method for the air filter system of a fuel cell, the problems of short filter element life and high maintenance cost of the air filter system of the fuel cell can be solved, the power economy of the fuel cell can be improved, the filtration mode of the air filter system can be adjusted according to the actual situation, excessive intake performance can be avoided, the life of the filter element can be increased, and the maintenance cost can be reduced.

[0029] To achieve the above objectives, a fifth aspect of the present invention provides a computer-readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the control method for the air filter system of the fuel cell described above.

[0030] According to the computer-readable storage medium of the present invention, by executing the above-described control method for the air filter system of a fuel cell, the problems of short filter element lifespan and high maintenance cost of the air filter system of the fuel cell can be solved, the power economy of the fuel cell can be improved, the filtration mode of the air filter system can be adjusted according to the actual situation, excessive intake performance can be avoided, the lifespan of the filter element can be increased, and the maintenance cost can be reduced.

[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 This is a structural diagram of an air filtration system for a fuel cell according to some embodiments of the present invention; Figure 2 A flowchart of a control method for an air filter system of a fuel cell according to some embodiments of the present invention; Figure 3 This is a schematic diagram of a control device for an air filter system of a fuel cell according to some embodiments of the present invention; Figure 4 This is a block diagram of an electronic device according to some embodiments of the present invention.

[0033] Explanation of reference numerals in the attached figures: 100 - Air filter system for fuel cell; 10 - First air filter device; 11 - Second air filter device; 12 - First sensor; 13 - Second sensor; 14 - Third sensor; 15 - Fourth sensor; 16 - First electronic valve; 17 - Second electronic valve; 18 - Third electronic valve; 19 - Fourth electronic valve; 20 - Fuel cell stack; 21 - Battery; 22 - Controller; 23 - First vent pipe; 24 - Second vent pipe; 25 - Third vent pipe; 310 - Determining module; 320 - Control module; 410 - Processor; 420 - Memory; 430 - Input / output interface; 440 - Communication interface; 450 - Bus. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar terms used in the embodiments of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] As discussed in the background section, the hydrogen fuel cell industry has garnered significant attention due to the development of energy conservation and emission reduction, the new energy sector, and electronic intelligent technologies. However, in the intake system of hydrogen fuel cells, power economy and the maintenance and replacement of air filter elements are receiving increasing attention. Chemical filters, due to their relatively short service life and high cost, coupled with their declining adsorption capacity over time and increased ash removal requirements, have a significantly shortened lifespan, forcing users to perform frequent maintenance and replacements. Therefore, the long-cycle replacement and maintenance-free characteristics of chemical filters have attracted widespread user attention.

[0037] In the process of realizing this invention, the applicant discovered that in the related technologies, the air filter of the intake system of hydrogen fuel cell vehicles is similar in design structure to that of traditional fuel vehicles. It uses non-woven fabric with carbon adsorption function for filtration based on the air filter of traditional fuel vehicles. However, the volume of the air filter is too large, resulting in high cost and maintenance cost, reducing the user experience, which urgently needs to be solved.

[0038] The main difference between the air filters of hydrogen fuel cell vehicles and those of traditional fuel vehicles 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 filter element cost of hydrogen fuel cell vehicles is relatively high, and the maintenance cycle is correspondingly shorter, making it difficult for users to accept.

[0039] Therefore, based on the above situation, this invention solves the problems of short service life and high maintenance cost of the air intake system filter element in hydrogen fuel cells, improves the power economy of fuel cells, can adjust the filtration mode of the air filter system according to the actual situation, avoids excessive air intake performance, improves the service life of the filter element, and reduces maintenance costs.

[0040] The following description, with reference to the accompanying drawings, describes an air filter system for a fuel cell, a control method for the air filter system for a fuel cell, a control device for the air filter system for a fuel cell, an electronic device, and a computer-readable storage medium.

[0041] refer to Figure 1 This is a structural diagram of an air filter system for a fuel cell according to some embodiments of the present invention.

[0042] The air filtration system 100 of the fuel cell of the present invention includes a first air filter device 10, a second air filter device 11, a first sensor 12, a second sensor 13, a third sensor 14, a fourth sensor 15, a first electronic valve 16, a second electronic valve 17, a third electronic valve 18, a fourth electronic valve 19, a fuel cell stack 20, a battery 21, a controller 22, a first vent pipe 23, a second vent pipe 24, and a third vent pipe 25.

[0043] It should be noted that the first end of the first electronic valve 16 is as follows: Figure 1 The first electronic valve 16 shown is marked as terminal 1 within the dashed box. The second terminal of the first electronic valve 16 is as follows: Figure 1 The first electronic valve 16 shown is marked as end 2 in the dashed box. The third end of the first electronic valve 16 is as follows: Figure 1 The terminal marked as 3 in the dashed box of the first electronic valve 16 shown is... The fourth terminal of the first electronic valve 16 is as follows... Figure 1 The first electronic valve 16 shown is marked as end 4 within the dashed box. The first end of the second electronic valve 17 is as follows... Figure 1 The terminal marked as 1 in the dashed box of the second electronic valve 17 shown is the second terminal as follows: Figure 1 The terminal marked as 2 in the dashed box of the second electronic valve 17 shown is as follows. The third terminal of the second electronic valve 17 is as follows. Figure 1 The second electronic valve 17 shown is marked as end 3 within the dashed box. The first end of the third electronic valve 18 is as follows... Figure 1 The terminal marked as 1 in the dashed box of the third electronic valve 18 shown is the second terminal as follows: Figure 1 The third electronic valve 18 shown is marked as end 2 in the dashed box. The third end of the third electronic valve 18 is as follows: Figure 1 The terminal marked as 3 in the dashed box of the third electronic valve 18 shown is as follows: The fourth terminal of the third electronic valve 18 is as follows. Figure 1 The third electronic valve 18 shown is marked with end 4 in the dashed box. The first end of the fourth electronic valve 19 is as follows. Figure 1 The terminal marked as 1 in the dashed box of the fourth electronic valve 19 shown is the second terminal of the fourth electronic valve 19 as follows: Figure 1 The terminal marked as 2 in the dashed box of the fourth electronic valve 19 shown is as follows: The third terminal of the fourth electronic valve 19 is as follows. Figure 1The terminal marked as 3 in the dashed box of the fourth electronic valve 19 shown is the fourth terminal of the fourth electronic valve 19 as follows: Figure 1 The fourth electronic valve 19 shown is marked with end 4 in the dashed box.

[0044] The first air filter device 10 can filter out dust from the air entering the fuel cell stack 20 and filter out impurities from the air discharged from the second vent pipe 24. The first air filter device 10 can be a dust removal air filter. The input end of the first air filter device 10 is connected to the first electronic valve 16, and the output end of the first air filter device 10 is connected to the second electronic valve 17. The first electronic valve 16 is connected to the first vent pipe 23 and the second vent pipe 24. A first sensor 12 is provided at the input end of the first air filter device 10, which can detect the intake pressure at the input end of the first air filter device 10. A second sensor 13 is provided at the output end of the first air filter device 10, which can detect the exhaust pressure at the output end of the first air filter device 10. Both the first sensor 12 and the second sensor 13 are pressure sensors.

[0045] The second air filter 11 can filter out harmful gases from the air entering the fuel cell stack 20. The second air filter 11 can be a chemical air filter, and the harmful gases can be n-butane, toluene, sulfur dioxide, nitrogen dioxide, etc. The input end of the second air filter 11 is connected to the third electronic valve 18, and the output end of the second air filter 11 is connected to the fourth electronic valve 19. The filter element of the second air filter 11 is equipped with a detachable electric heating device. The electric heating device can assist in the volatilization of harmful gases in the second air filter 11. The electric heating device can be located in the middle of the filter element and assembled on the filter element body. When replacing the filter element, the electric heating device needs to be removed; when replacing with a new filter element, the electric heating device needs to be reassembled and installed into the second air filter 11.

[0046] A third sensor 14 is installed at the input end of the third electronic valve 18. The third sensor 14 can detect the intake concentration of harmful gases at the input end of the second air filter device 11. A fourth sensor 15 is installed at the output end of the second air filter device 11. The fourth sensor 15 can detect the exhaust concentration of harmful gases at the output end of the second air filter device 11. Both the third sensor 14 and the fourth sensor 15 are concentration sensors.

[0047] The first electronic valve 16 is connected to the first vent pipe 23 and the second vent pipe 24 respectively. The second electronic valve 17 is connected to the third electronic valve 18. The third electronic valve 18 is connected to the third vent pipe 25. The fourth electronic valve 19 is connected to the fuel cell stack 20.

[0048] The first end of the first electronic valve 16 is connected to the second vent pipe 24, the second end of the first electronic valve 16 is connected to the input end of the first air filter device 10, the third end of the first electronic valve 16 is connected to the third end of the second electronic valve 17, and the fourth end of the first electronic valve 16 is connected to the first vent pipe 23. The output end of the first air filter device 10 is connected to the first end of the second electronic valve 17, the second end of the second electronic valve 17 is connected to the first end of the third electronic valve 18, the second end of the third electronic valve 18 is connected to the input end of the second air filter device 11, the third end of the third electronic valve 18 is connected to the third end of the fourth electronic valve 19, the fourth end of the third electronic valve 18 is connected to the third vent pipe 25, the output end of the second air filter device 11 is connected to the first end of the fourth electronic valve 19, the second end of the fourth electronic valve 19 is connected to the fuel cell stack 20, and the fuel cell stack 20 is connected to the fourth end of the fourth electronic valve 19.

[0049] By setting up a first air filter device 10 and a second air filter device 11, dust and harmful gases are filtered out respectively, achieving two-stage purification of the fuel cell intake air; in conjunction with multiple electronic valves and sensors, the airflow path can be flexibly controlled through the low-level air intake pipe and the high-level air intake pipe to adapt to different environmental requirements, improve the fuel cell stack intake air quality and system reliability.

[0050] Battery 21 is connected to the second air filter device 11, and battery 21 can provide power to the electric heating device in the second air filter device 11.

[0051] The controller 22 is communicatively connected to the first air filter device 10, the second air filter device 11, the first sensor 12, the second sensor 13, the third sensor 14, the fourth sensor 15, the first electronic valve 16, the second electronic valve 17, the third electronic valve 18, the fourth electronic valve 19, the fuel cell stack 20, the battery 21, the first vent pipe 23, the second vent pipe 24, and the third vent pipe 25.

[0052] Optionally, the second electronic valve 17 can be an electronic three-way valve, the first electronic valve 16, the third electronic valve 18 and the fourth electronic valve 19 can be electronic four-way valves, the first vent pipe 23 and the third vent pipe 25 can be low-level vent pipes, and the second vent pipe 24 can be a high-level vent pipe. The air quality at the high-level vent pipe is higher, and the high-level air inlet pipe can perform gas-liquid separation.

[0053] It should be noted that the low-level ventilation duct can be selectively connected to the vehicle's internal air circulation system, continuously introducing clean air filtered by the air conditioning filter or the in-vehicle air purification device. Compared to drawing air directly from the external environment, this air source has extremely low dust content and a low concentration of harmful gases, avoiding secondary pollution to the first and second air filters during backflushing cleaning or desorption of harmful gases. In external environments such as sandstorms, smog, rain, snow, high humidity, or high pollution, the outside air often contains a large amount of particulate matter, water vapor, or chemical pollutants. Using clean air recirculated from inside the vehicle as the air source ensures that the backflushing regeneration function can operate normally under any weather conditions, independent of the external air quality.

[0054] In summary, the air filtration system for a fuel cell according to an embodiment of the present invention includes: a first air filter device for filtering dust from the air entering the fuel cell stack; the input end of the first air filter device is connected to a first electronic valve, and the output end of the first air filter device is connected to a second electronic valve; the first electronic valve is connected to a first vent pipe and a second vent pipe; a first sensor is provided at the input end of the first air filter device; a second sensor is provided at the output end of the first air filter device; a second air filter device for filtering harmful gases from the air entering the fuel cell stack; the input end of the second air filter device is connected to a third electronic valve, and the output end of the second air filter device is connected to a fourth electronic valve; the second electronic valve is connected to the third electronic valve, the third electronic valve is connected to a third vent pipe, and the fourth electronic valve is connected to the fuel cell stack; a third sensor is provided at the input end of the third electronic valve; and a fourth sensor is provided at the output end of the second air filter device. Therefore, this system can solve the problems of short filter life and high maintenance cost of fuel cell air filter system, improve the power economy of fuel cell, and adjust the filtration mode of air filter system according to actual conditions to avoid excessive intake performance, improve filter life and reduce maintenance costs.

[0055] refer to Figure 2 This is a flowchart of a control method for an air filter system of a fuel cell according to some embodiments of the present invention.

[0056] like Figure 2 As shown, the control method for the air filter system of a fuel cell according to an embodiment of the present invention may include the following steps: S201, determine the filtration mode of the air filter system for the fuel cell based on environmental conditions.

[0057] Specifically, environmental operating conditions are acquired, which can include high-speed scenarios, urban roads, clear weather, mining roads, dusty weather, and rainy / snowy weather. The filtration mode of the fuel cell air filter system is determined based on these environmental conditions. The filtration mode can include an economic mode, a dustproof mode, a rain / snowproof mode, a comprehensive protection mode, and a clean mode. For example, the economic mode of the fuel cell air filter system is determined based on high-speed scenarios, urban roads, and clear weather; the dustproof mode is determined based on mining roads and dusty weather; the rain / snowproof mode is determined based on rain / snowy weather; and the comprehensive protection mode is determined based on extreme weather conditions such as mining roads, dusty weather, and rain / snowy weather.

[0058] S202 controls the working status of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter device, and the second air filter device according to the filtration mode.

[0059] Specifically, after obtaining the filtration mode of the fuel cell air filter system, the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter are controlled according to the filtration mode of the fuel cell air filter system. For example, when the filtration mode is the economy mode, the gas from the third vent pipe enters the second air filter from the fourth and second ends of the third electronic valve to filter out harmful gases in the air. After the second air filter has filtered out the harmful gases in the air, the gas that has been filtered out flows into the fuel cell stack from the first and second ends of the fourth electronic valve. For example, in dustproof mode, gas from the first vent pipe enters the first air filter through the first and second ends of the first electronic valve to remove dust from the air. After the first air filter removes the dust, the filtered gas flows out through the first and second ends of the second electronic valve. This gas then flows through the first and second ends of the third electronic valve and enters the second air filter to remove harmful gases. After the second air filter removes these harmful gases, the filtered gas flows into the fuel cell stack through the first and second ends of the fourth electronic valve. This solves the problems of short filter life and high maintenance costs in fuel cell air filter systems, improves the power economy of fuel cells, allows for adjustment of the air filter mode to avoid excessive intake performance, extends filter life, and reduces maintenance costs.

[0060] In some embodiments of the present invention, the filtration mode includes an economic mode; controlling the operating state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the fourth end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0061] Specifically, in the economy filtration mode, the fourth end of the third electronic valve is connected to the second end, and the first end of the fourth electronic valve is connected to the second end. That is, the gas from the third vent pipe enters the second air filter from the fourth and second ends of the third electronic valve to filter out harmful gases in the air. After the second air filter has removed the harmful gases, the gas flows into the fuel cell stack from the first and second ends of the fourth electronic valve to remove harmful gases from the air entering the fuel cell stack through the second air filter, reducing intake resistance, effectively alleviating the power consumption of the hydrogen fuel cell air compressor, and improving the power economy of the fuel cell.

[0062] In some embodiments of the present invention, the filtration mode includes a dustproof mode; controlling the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0063] Specifically, when the filtration mode is dustproof mode, the first and second ends of the first electronic valve, the first and second ends of the second electronic valve, the first and second ends of the third electronic valve, and the first and second ends of the fourth electronic valve are all connected. In other words, the gas from the first vent pipe enters the first air filter through the first and second ends of the first electronic valve to filter out dust from the air. After the first air filter has removed the dust, the filtered gas flows out through the first and second ends of the second electronic valve. The gas flows out from the first and second ends of the third electronic valve and enters the second air filter to filter out harmful gases in the air. After the second air filter has removed the harmful gases, the gas flows out from the first and second ends of the fourth electronic valve into the fuel cell stack. The first air filter removes dust from the air entering the fuel cell stack, and the second air filter removes harmful gases from the air entering the fuel cell stack, thereby improving dust removal capacity, avoiding excessive intake performance, and improving filter element utilization.

[0064] In some embodiments of the present invention, the filtration mode includes a rain and snow protection mode; controlling the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the fourth end of the first electronic valve to be connected to the third end, controlling the third end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0065] Specifically, when the filtration mode is rain and snow protection mode, the fourth and third terminals of the first electronic valve are connected, the third and second terminals of the second electronic valve are connected, the first and second terminals of the third electronic valve are connected, and the first and second terminals of the fourth electronic valve are connected. In other words, the gas from the first vent pipe flows from the fourth and third terminals of the first electronic valve to the third and second terminals of the second electronic valve. The gas flowing out from the third and second terminals of the second electronic valve flows out from the first and second terminals of the third electronic valve. The gas flowing out from the first and second terminals of the third electronic valve enters the second air filter device to filter out harmful gases in the air. After the second air filter device has filtered out the harmful gases in the air, the gas that has been filtered out flows from the first and second terminals of the fourth electronic valve into the fuel cell stack to filter out harmful gases in the air entering the fuel cell stack through the second air filter device, thereby improving the rain and snow removal capability, avoiding excessive intake performance, and improving the filter element utilization rate.

[0066] Because the electric air compressor of the fuel cell stack is sensitive to water, in rainy weather, the first vent pipe can be used for air intake (this vent pipe can be designed inside the cabin or inside the hydrogen tank frame and in an area that is not exposed) to effectively prevent rainwater from entering.

[0067] In some embodiments of the present invention, the filtration mode includes a comprehensive protection mode; controlling the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0068] Specifically, in the comprehensive protection mode of filtration, the first and second ends of the first electronic valve, the first and second ends of the second electronic valve, the first and second ends of the third electronic valve, and the first and second ends of the fourth electronic valve are all connected. In other words, the gas from the second vent pipe enters the first air filter from the first and second ends of the first electronic valve to filter out dust from the air. After the first air filter has removed the dust, the filtered gas flows out from the first and second ends of the second electronic valve. The gas flowing out from the first and second ends of the third electronic valve enters the second air filter to remove harmful gases from the air. After the second air filter removes the harmful gases, the gas flows out from the first and second ends of the fourth electronic valve into the fuel cell stack. The first air filter removes dust from the air entering the fuel cell stack, and the second air filter removes harmful gases from the air entering the fuel cell stack. This improves the ability to remove rain and snow, improves the ability to remove dust, avoids excessive intake performance, and improves the utilization rate of the filter element.

[0069] In some embodiments of the present invention, the method further includes: acquiring the exhaust gas concentration detected by the fourth sensor; in response to the exhaust gas concentration being greater than a preset concentration threshold, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the second end, and controlling the first end of the fourth electronic valve to connect with the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and harmful gases in the air entering the fuel cell stack through the second air filter device.

[0070] Specifically, the exhaust gas concentration can be detected by a fourth sensor installed at the output end of the second air filter. After obtaining the exhaust gas concentration, it is compared with a preset concentration threshold to determine whether the exhaust gas concentration is greater than the preset concentration threshold. When the exhaust gas concentration is greater than the preset concentration threshold, it indicates that the exhaust gas concentration is high and the concentration of harmful gases in the air is greater than the required value of the fuel cell stack. At this time, the second and fourth terminals of the first electronic valve, the first and second terminals of the second electronic valve, the first and second terminals of the third electronic valve, and the first and second terminals of the fourth electronic valve are connected. That is, the gas from the first vent pipe enters the first air filter from the second and fourth terminals of the first electronic valve to filter out dust from the air. After the first air filter has filtered out the dust, the gas that has been filtered out of the air then enters the first air filter from the first and fourth terminals of the second electronic valve. The gas flowing out from the first and second ends of the second electronic valve flows out from the first and second ends of the third electronic valve. The gas flowing out from the first and second ends of the third electronic valve enters the second air filter device to filter out harmful gases in the air. After the second air filter device has filtered out the harmful gases in the air, the gas that has been filtered out of the harmful gases in the air flows into the fuel cell stack from the first and second ends of the fourth electronic valve to filter out dust in the air entering the fuel cell stack through the first air filter device and harmful gases in the air entering the fuel cell stack through the second air filter device.

[0071] In some embodiments of the present invention, the above method further includes: in response to the exhaust concentration not being greater than a preset concentration threshold, controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the third end, and controlling the third end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device.

[0072] Specifically, when the exhaust concentration is not greater than a preset concentration threshold, it indicates a low exhaust concentration and that the concentration of harmful gases in the air is not greater than the required value for the fuel cell stack. At this time, the first and second terminals of the first electronic valve, the first and second terminals of the second electronic valve, the first and third terminals of the third electronic valve, and the second and third terminals of the fourth electronic valve are connected. In other words, the gas from the second vent pipe enters the first air filter from the first and second terminals of the first electronic valve to filter out dust from the air. After the first air filter has removed the dust, the gas that has been filtered out then... The gas flows out from the first and second ends of the second electronic valve, and then flows out from the first and third ends of the third electronic valve. The gas flowing out from the first and third ends of the third electronic valve then flows into the fuel cell stack from the third and second ends of the fourth electronic valve. This allows the first air filter to filter out dust from the air entering the fuel cell stack, enabling the first air filter to work independently. This reduces the service life of the second air filter, thereby extending its lifespan and ultimately increasing the lifespan of the filter element. It also enhances dust removal capabilities, avoids excessive intake performance, improves filter element utilization, and reduces vehicle operating costs.

[0073] In some embodiments of the present invention, the method further includes: acquiring the intake pressure detected by the first sensor and the exhaust pressure detected by the second sensor; calculating a first difference between the intake pressure and the exhaust pressure; determining whether the first difference is greater than a first preset difference; and, in response to the first difference being greater than the first preset difference, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the third end, controlling the second end of the third electronic valve to connect with the fourth end, controlling the first end of the fourth electronic valve to connect with the second end, and controlling the third end of the fourth electronic valve to connect with the fourth end, so as to purge the dust in the first air filter device through the air intake device of the electric stack air compressor and discharge it through the first vent pipe; wherein the air intake device of the electric stack air compressor is connected to the third vent pipe.

[0074] Specifically, as the first air filter operates for extended periods, the adsorption and dust removal capacity of its filter element decreases. Excessive dirt and blockage inside the filter element lead to a reduction in its filtration capacity, and pressure loss is inevitable during fluid flow. Airflow through the air filter acts like a throttling mechanism, creating a pressure difference; the smaller the throttling orifice, the greater the pressure difference. As air continuously flows through the air filter, dust and other impurities adhere to the filter element, clogging it and reducing the flow area, effectively shrinking the throttling orifice and increasing the pressure difference. Therefore, to determine if the first air filter needs cleaning, pressure testing is necessary. This can be achieved by using a first sensor at the input end of the first air filter to detect the intake pressure and a second sensor at the output end to detect the exhaust pressure.

[0075] After obtaining the intake and exhaust pressures, the difference between the intake and exhaust pressures is calculated and used as the first difference. The first difference is then compared with a first preset difference to determine whether the first difference is greater than the first preset difference.

[0076] When the first difference is greater than the first preset difference, it indicates a significant difference between the intake and exhaust pressures. The controller then transmits this information to the vehicle's dashboard, displaying a message indicating that the first air filter requires maintenance. Once the vehicle is parked, the self-cleaning function is activated. This involves connecting the second and fourth terminals of the first electronic valve, the first and second terminals of the second electronic valve, the first and third terminals of the third electronic valve, the second and fourth terminals of the third electronic valve, and the first and second terminals of the fourth electronic valve. This allows the air intake device of the electric stack air compressor to blow away dust from the first air filter, which is then discharged through the first vent pipe. The air intake device of the electric stack air compressor is connected to the third vent pipe, meaning that air from the third vent pipe flows from the fourth and second terminals of the third electronic valve to the input terminal of the second air filter. The first air filter removes harmful gases from the air. The filtered air then flows out from the output of the second air filter, exiting through the first and second ends of the fourth electronic valve to enter the fuel cell stack. Gas from the fuel cell stack flows out through the fourth and third ends of the fourth electronic valve, then through the third and first ends of the third electronic valve, and finally through the first and second ends of the second electronic valve. The gas exiting from the first and second ends of the second electronic valve then passes through the air intake device of the fuel cell stack air compressor to purge dust from the first air filter. After purging the dust from the first air filter, the dust adhering to the side surface of the filter element is blown out through the second and fourth ends of the first electronic valve and discharged through the first vent pipe, ensuring the first air filter of the vehicle is in normal working condition. This solves the problems of short filter element lifespan and high maintenance costs in fuel cell air filter systems, improving filter element lifespan and reducing maintenance costs.

[0077] After the vehicle's first air filter is in normal working condition, air in the first vent pipe can directly enter the first air filter from the second and fourth ends of the first electronic valve to filter out dust from the air. After the first air filter has filtered out the dust, the filtered air flows out from the first and second ends of the second electronic valve to the first and second ends of the third electronic valve. The air flowing out from the first and second ends of the third electronic valve enters the second air filter to filter out harmful gases from the air. After the second air filter has filtered out the harmful gases, the filtered air flows into the fuel cell stack from the first and second ends of the fourth electronic valve.

[0078] It should be explained that as the first air filter operates for an extended period, the adsorption and dust removal capacity of its filter element will decrease. If the difference between the intake and exhaust pressures exceeds a preset value, it indicates a malfunction in the vehicle's first air filter, requiring further inspection or maintenance of the filter element. If the difference is less than or equal to the preset value, the vehicle's first air filter is functioning normally and requires no maintenance.

[0079] In some embodiments, after determining that the first difference is greater than the first preset difference, the air filter system of the fuel cell will generate a maintenance reminder message for the first air filter device, such as "The pressure difference of the first air filter device is too large, please check and maintain it", and provide acoustic and / or optical reminders based on the maintenance reminder message for the first air filter device.

[0080] Optionally, the reminder method of this application can be to control the vehicle's acoustic reminder device to emit an alarm sound, such as a beeping sound, or to issue a voice announcement, such as that the filter element of the vehicle's first air filter needs maintenance. It can also be reminded through an optical reminder device, such as by flashing an indicator light inside the vehicle, the flashing type of which can be preset to correspond to the scenario, or by displaying an icon on the vehicle's display screen, such as transmitting the first air filter maintenance reminder signal to the vehicle's dashboard to display that the first air filter element needs maintenance.

[0081] In some embodiments of the present invention, the method further includes: acquiring the intake air concentration detected by the third sensor and the exhaust air concentration detected by the fourth sensor; calculating a second difference between the intake air concentration and the exhaust air concentration; determining whether the second difference is greater than a second preset difference; and, in response to the second difference being greater than the second preset difference, controlling the second end of the first electronic valve to connect with the fourth end, controlling the first end of the second electronic valve to connect with the second end, controlling the first end of the third electronic valve to connect with the third end, controlling the second end of the third electronic valve to connect with the fourth end, controlling the second end of the fourth electronic valve to connect with the third end, and controlling the first end of the fourth electronic valve to connect with the fourth end, so as to purge the harmful gas in the second air filter device through the air intake device of the electric stack air compressor and discharge it through the third vent pipe; wherein the air intake device of the electric stack air compressor is connected to the first vent pipe.

[0082] Specifically, the air filter system of a fuel cell needs to filter out not only dust but also harmful gases such as n-butane, toluene, sulfur dioxide, and nitrogen dioxide. Similarly, as air continuously flows through the air filter, dust and other impurities adhere to the filter element, clogging it and reducing the flow area, which is equivalent to a smaller throttling orifice, thus increasing the concentration difference. Therefore, to determine whether the second air filter needs cleaning, its concentration needs to be detected. This can be done by using a third sensor at the input of the third electronic valve to detect the intake air concentration and a fourth sensor at the output of the second air filter to detect the exhaust air concentration.

[0083] After obtaining the intake air concentration and exhaust air concentration, the difference between the intake air concentration and exhaust air concentration is calculated, and this difference is used as the second difference. After obtaining the second difference, it is compared with a second preset difference to determine whether the second difference is greater than the second preset difference.

[0084] When the second difference is greater than the second preset difference, it indicates a significant difference between the intake and exhaust concentrations. The controller then transmits this information to the vehicle's dashboard, displaying a message indicating that the second air filter requires maintenance. Once the vehicle is parked, the self-cleaning function is activated. This involves connecting the second and fourth terminals of the first electronic valve, the first and second terminals of the second electronic valve, the first and third terminals of the third electronic valve, the second and fourth terminals of the third electronic valve, and the second and third terminals of the fourth electronic valve. This purges harmful gases from the second air filter through the air intake device of the electric stack air compressor and discharges them through the third vent pipe. In other words, gas from the first vent pipe enters the first air filter from the second and fourth terminals of the first electronic valve to filter out harmful gases from the air. After the first air filter removes dust from the air, the filtered air flows out from the first and second ends of the second electronic valve. This air then flows out from the first and third ends of the third electronic valve, and finally from the first and third ends of the third electronic valve into the fuel cell stack via the second and third ends of the fourth electronic valve. The air from the fuel cell stack then flows out from the fourth and first ends of the fourth electronic valve. This air is then used by the fuel cell stack's air compressor to purge harmful gases from the second air filter. After purging, the remaining harmful gases and dust adhering to the filter element's side surface are blown out from the second and fourth ends of the third electronic valve and discharged through the third vent pipe, ensuring the vehicle's second air filter is in normal working order. This solves the problems of short filter element lifespan and high maintenance costs in fuel cell air filter systems, improving filter element lifespan and reducing maintenance costs.

[0085] After the vehicle's second air filter is in normal working condition, air from the first vent pipe can directly enter the first air filter from the fourth and second ends of the first electronic valve to filter out dust from the air. After the first air filter has removed the dust from the air, the filtered air enters the first and second ends of the third electronic valve from the first and second ends of the second electronic valve. The air flowing out from the first and second ends of the third electronic valve enters the second air filter to filter out harmful gases from the air. After the second air filter has removed the harmful gases from the air, the filtered air flows into the fuel cell stack from the first and second ends of the fourth electronic valve.

[0086] It should be explained that as the second air filter operates for an extended period, the filter element's ability to adsorb and remove harmful gases will decrease. If the difference between the intake air concentration and the exhaust air concentration is greater than a preset value, it indicates a malfunction in the vehicle's second air filter, requiring further inspection or maintenance of the filter element. If the difference is less than or equal to the preset value, it indicates that the vehicle's second air filter is functioning normally and requires no maintenance.

[0087] In some embodiments, after determining that the second difference is greater than the second preset difference, the air filter system of the fuel cell generates a maintenance reminder message for the second air filter device, such as "The concentration difference of the second air filter device is too large, please check and maintain it", and provides acoustic and / or optical reminders based on the maintenance reminder message for the second air filter device.

[0088] Optionally, the reminder method of this application can be to control the vehicle's acoustic reminder device to emit an alarm sound, such as a beeping sound, or a voice broadcast, such as indicating that the filter element of the vehicle's second air filter device needs maintenance. It can also be reminded through an optical reminder device, such as by flashing an indicator light inside the vehicle, the flashing type of which can be preset to correspond to the scenario, or by displaying an icon on the vehicle's display screen, such as transmitting the second air filter device maintenance reminder signal to the vehicle's dashboard to display that the filter element of the second air filter device needs maintenance.

[0089] In some embodiments, before connecting the second and fourth terminals of the first electronic valve, the first and second terminals of the second electronic valve, the first and third terminals of the third electronic valve, the second and fourth terminals of the third electronic valve, the second and third terminals of the fourth electronic valve, and the first and fourth terminals of the fourth electronic valve, the electric heating device is activated to accelerate the volatilization of harmful gases in the second air filter. During the activation time of the electric heating device, the fourth electronic valve is closed to prevent harmful gases from entering the fuel cell stack through the fourth electronic valve, thereby reducing the impact of contaminants on the fuel cell stack performance and extending the fuel cell stack lifespan. It is understood that if the fourth electronic valve is opened during the process of purging volatilized contaminants from the second air filter using the air intake device of the fuel cell stack air compressor, incompletely purified gases or potentially present particulate matter may enter the fuel cell stack, thereby damaging the fuel cell stack. The system determines whether the start-up time of the electric heating device has reached the preset start-up time (e.g., the preset start-up time can be 20 minutes). When the start-up time of the electric heating device reaches the preset start-up time, it indicates that the harmful gas has evaporated to a certain extent. At this time, the system controls the opening of the fourth electronic valve so that the gas flowing out from the fourth end and the first end of the fourth electronic valve can purge the harmful gas in the second air filter through the air intake device of the electric stack air compressor. After purging the harmful gas in the second air filter, the harmful gas that has evaporated in the second air filter and the dust adhering to the side surface of the filter element are blown out from the second end and the fourth end of the third electronic valve and discharged through the third vent pipe, so that the vehicle's second air filter is in normal working condition.

[0090] After heating with an electric heating device, the current temperature of the electric heating device can be obtained by a temperature sensor. If the current temperature of the electric heating device is greater than or equal to the preset temperature, it indicates that the pollutants in the second air filter device have reached a certain degree of volatilization. At this time, the fourth electronic valve is opened. Preferably, the preset temperature can be 60°C, but no specific limitation is made here.

[0091] In summary, the control method for the air filter system of a fuel cell according to embodiments of the present invention first determines the filtration mode of the fuel cell air filter system based on environmental conditions, and then controls the operating states of the first electronic valve, second electronic valve, third electronic valve, fourth electronic valve, first air filter device, and second air filter device according to the filtration mode. Therefore, this method can solve the problems of short filter element lifespan and high maintenance costs in fuel cell air filter systems, improve the power economy of fuel cells, adjust the filtration mode of the air filter system according to actual conditions, avoid excessive intake performance, increase filter element lifespan, and reduce maintenance costs.

[0092] It should be noted that the method of this embodiment can be executed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method of this embodiment, and the multiple devices will interact with each other to complete the above method.

[0093] It should be noted that the above description describes some embodiments of the present invention. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims may be performed in a different order than that shown in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0094] Corresponding to the above embodiments, the present invention also proposes a control device for an air filter system of a fuel cell.

[0095] like Figure 3 As shown, the control device for the air filter system of the fuel cell in this embodiment of the invention includes: a determination module 310 and a control module 320.

[0096] The determining module 310 is configured to determine the filtration mode of the fuel cell air filter system based on environmental conditions. The control module 320 is configured to control the operating status of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter based on the filtration mode.

[0097] In some embodiments of the present invention, the filtration mode includes an economy mode; the control module 320 controls the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode, specifically for: controlling the fourth end of the third electronic valve to connect with the second end, and controlling the first end of the fourth electronic valve to connect with the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0098] In some embodiments of the present invention, the filtration mode includes a dustproof mode; the control module 320 controls the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode, specifically for: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0099] In some embodiments of the present invention, the filtration mode includes a rain and snow protection mode; the control module 320 controls the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter device, and the second air filter device according to the filtration mode, specifically for: controlling the fourth end of the first electronic valve to be connected to the third end, controlling the third end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter device.

[0100] In some embodiments of the present invention, the filtration mode includes a comprehensive protection mode; the control module 320 controls the working state of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode, specifically for: controlling the first end of the first electronic valve to be connected to the second end, controlling the first end of the second electronic valve to be connected to the second end, controlling the first end of the third electronic valve to be connected to the second end, and controlling the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter and to filter out harmful gases in the air entering the fuel cell stack through the second air filter.

[0101] In some embodiments of the present invention, the exhaust gas concentration detected by the fourth sensor is obtained; in response to the exhaust gas concentration being greater than a preset concentration threshold, the control module 320 is further configured to control the second end of the first electronic valve to be connected to the fourth end, control the first end of the second electronic valve to be connected to the second end, control the first end of the third electronic valve to be connected to the second end, and control the first end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and to filter out harmful gases in the air entering the fuel cell stack through the second air filter device.

[0102] In some embodiments of the present invention, in response to the exhaust concentration not being greater than a preset concentration threshold, the control module 320 is further configured to control the first end of the first electronic valve to be connected to the second end, control the first end of the second electronic valve to be connected to the second end, control the first end of the third electronic valve to be connected to the third end, and control the third end of the fourth electronic valve to be connected to the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device.

[0103] In some embodiments of the present invention, the intake pressure detected by the first sensor and the exhaust pressure detected by the second sensor are obtained; a first difference between the intake pressure and the exhaust pressure is calculated; it is determined whether the first difference is greater than a first preset difference; in response to the first difference being greater than the first preset difference, the control module 320 is further configured to control the second end of the first electronic valve to be connected to the fourth end, control the first end of the second electronic valve to be connected to the second end, control the first end of the third electronic valve to be connected to the third end, control the second end of the third electronic valve to be connected to the fourth end, control the first end of the fourth electronic valve to be connected to the second end, and control the third end of the fourth electronic valve to be connected to the fourth end, so as to purge the dust in the first air filter device through the air intake device of the electric stack air compressor and discharge it through the first vent pipe; wherein the air intake device of the electric stack air compressor is connected to the third vent pipe.

[0104] In some embodiments of the present invention, the intake air concentration detected by the third sensor and the exhaust air concentration detected by the fourth sensor are obtained; a second difference between the intake air concentration and the exhaust air concentration is calculated; it is determined whether the second difference is greater than a second preset difference; in response to the second difference being greater than the second preset difference, the control module 320 is further configured to control the second end of the first electronic valve to be connected to the fourth end, control the first end of the second electronic valve to be connected to the second end, control the first end of the third electronic valve to be connected to the third end, control the second end of the third electronic valve to be connected to the fourth end, control the second end of the fourth electronic valve to be connected to the third end, and control the first end of the fourth electronic valve to be connected to the fourth end, so as to purge the harmful gas in the second air filter device through the air intake device of the electric stack air compressor and discharge it through the third vent pipe; wherein the air intake device of the electric stack air compressor is connected to the first vent pipe.

[0105] It should be noted that for details not disclosed in the control device of the air filter system of the fuel cell in this embodiment of the invention, please refer to the details disclosed in the control method of the air filter system of the fuel cell in this embodiment of the invention, which will not be repeated here.

[0106] In summary, the control device for the air filter system of a fuel cell according to an embodiment of the present invention includes: a determining module configured to determine the filtration mode of the air filter system of the fuel cell based on environmental conditions; and a control module configured to control the operating states of a first electronic valve, a second electronic valve, a third electronic valve, a fourth electronic valve, a first air filter device, and a second air filter device according to the filtration mode. Therefore, this device can solve the problems of short filter element lifespan and high maintenance costs in the air filter system of a fuel cell, improve the power economy of the fuel cell, adjust the filtration mode of the air filter system according to actual conditions, avoid excessive intake performance, increase the lifespan of the filter element, and reduce maintenance costs.

[0107] For ease of description, the above system is described by dividing it into various modules based on their functions. Of course, in implementing this invention, the functions of each module can be implemented in one or more software and / or hardware components.

[0108] The system described in the above embodiments is used to implement the corresponding method in any of the foregoing embodiments and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0109] Corresponding to the above embodiments, the present invention also proposes an electronic device.

[0110] refer to Figure 4 The diagram below is a block diagram of an electronic device according to some embodiments of the present invention. It illustrates a more specific hardware structure of the electronic device provided in this embodiment. The device may include: a processor 410, a memory 420, an input / output interface 430, a communication interface 440, and a bus 450. The processor 410, memory 420, input / output interface 430, and communication interface 440 are interconnected internally via the bus 450.

[0111] The processor 410 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0112] The memory 420 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 420 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 420 and is called and executed by the processor 410.

[0113] Input / output interface 430 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touch screens, microphones, various sensors, etc., and output devices may include displays, speakers, vibrators, indicator lights, etc.

[0114] The communication interface 440 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0115] Bus 450 includes a pathway for transmitting information between various components of the device, such as processor 410, memory 420, input / output interface 430, and communication interface 440.

[0116] It should be noted that although the above-described device only shows the processor 410, memory 420, input / output interface 430, communication interface 440, and bus 450, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0117] The electronic devices described above are used to implement the corresponding methods in any of the foregoing embodiments and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0118] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, the present invention also provides a computer-readable storage medium storing computer instructions for causing a computer to perform the methods of any of the above embodiments.

[0119] The aforementioned computer-readable storage medium can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0120] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to perform the methods of any of the above exemplary method sections, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0121] Furthermore, although the operations of the method of the present invention are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all of the operations shown must be performed to achieve the desired result. Rather, the steps depicted in the flowchart may be performed in a different order. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0122] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0123] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar terms used in the embodiments of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0124] While the spirit and principles of the invention have been described with reference to several specific embodiments, it should be understood that the invention is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined for benefit; such division is merely for ease of description. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the appended claims is to be interpreted in the broadest sense, thereby encompassing all such modifications and equivalent structures and functions.

Claims

1. An air filtration system for a fuel cell, characterized in that, include: A first air filter device (10) is used to filter out dust from the air entering the fuel cell stack (20). The input end of the first air filter device (10) is connected to a first electronic valve (16), and the output end of the first air filter device (10) is connected to a second electronic valve (17). The first electronic valve (16) is connected to a first vent pipe (23) and a second vent pipe (24). A first sensor (12) is provided at the input end of the first air filter device (10), and a second sensor (13) is provided at the output end of the first air filter device (10). The second air filter device (11) is used to filter out harmful gases in the air entering the fuel cell stack (20). The input end of the second air filter device (11) is connected to the third electronic valve (18), and the output end of the second air filter device (11) is connected to the fourth electronic valve (19). The second electronic valve (17) is connected to the third electronic valve (18), the third electronic valve (18) is connected to the third vent pipe (25), and the fourth electronic valve (19) is connected to the fuel cell stack (20). The input end of the third electronic valve (18) is provided with a third sensor (14), and the output end of the second air filter device (11) is provided with a fourth sensor (15).

2. The air filtration system for a fuel cell according to claim 1, characterized in that, The filter element of the second air filter device (11) is equipped with a detachable electric heating device, which is used to assist the volatilization of harmful gases in the second air filter device (11).

3. The air filtration system for a fuel cell according to claim 1, characterized in that, The first end of the first electronic valve (16) is connected to the second vent pipe (24), the second end of the first electronic valve (16) is connected to the input end of the first air filter device (10), the third end of the first electronic valve (16) is connected to the third end of the second electronic valve (17), and the fourth end of the first electronic valve (16) is connected to the first vent pipe (23); the output end of the first air filter device (10) is connected to the first end of the second electronic valve (17), and the second end of the second electronic valve (17) is connected to the first end of the third electronic valve (18). The second end of the third electronic valve (18) is connected to the input end of the second air filter device (11), the third end of the third electronic valve (18) is connected to the third end of the fourth electronic valve (19), the fourth end of the third electronic valve (18) is connected to the third vent pipe (25), the output end of the second air filter device (11) is connected to the first end of the fourth electronic valve (19), the second end of the fourth electronic valve (19) is connected to the fuel cell stack (20), and the fuel cell stack (20) is connected to the fourth end of the fourth electronic valve (19).

4. A control method for an air filter system of a fuel cell, characterized in that, The method, applied to an air filter system for a fuel cell as described in any one of claims 1-3, comprises: The filtration mode of the air filter system for the fuel cell is determined based on the environmental conditions. The operating status of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter is controlled according to the filtration mode.

5. The control method for the air filter system of a fuel cell according to claim 4, characterized in that, The filtering modes include the economic mode; The control of the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: The fourth end of the third electronic valve is connected to the second end, and the first end of the fourth electronic valve is connected to the second end, so as to filter out harmful gases in the air entering the fuel cell stack through the second air filter device.

6. The control method for the air filter system of a fuel cell according to claim 4, characterized in that, The filtration mode includes a dustproof mode; The control of the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: The first electronic valve is connected to the second electronic valve, the first electronic valve is connected to the second electronic valve, the first electronic valve is connected to the second electronic valve, and the first electronic valve is connected to the second electronic valve, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and remove harmful gases in the air entering the fuel cell stack through the second air filter device.

7. The control method for the air filter system of a fuel cell according to claim 4, characterized in that, The filtering modes include a rain and snow protection mode; The control of the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: The fourth and third terminals of the first electronic valve are connected, the third and second terminals of the second electronic valve are connected, the first and second terminals of the third electronic valve are connected, and the first and second terminals of the fourth electronic valve are connected to filter out harmful gases in the air entering the fuel cell stack through the second air filter device.

8. The control method for the air filter system of a fuel cell according to claim 4, characterized in that, The filtering modes include a comprehensive protection mode; The control of the operating states of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode includes: The first electronic valve is connected to the second electronic valve, the first electronic valve is connected to the second electronic valve, the first electronic valve is connected to the second electronic valve, and the first electronic valve is connected to the second electronic valve, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and remove harmful gases in the air entering the fuel cell stack through the second air filter device.

9. The control method for the air filter system of a fuel cell according to claim 8, characterized in that, The method further includes: Obtain the exhaust gas concentration detected by the fourth sensor; In response to the exhaust concentration being greater than a preset concentration threshold, the system controls the second and fourth terminals of the first electronic valve to be connected, controls the first and second terminals of the second electronic valve to be connected, controls the first and second terminals of the third electronic valve to be connected, and controls the first and second terminals of the fourth electronic valve to be connected, so as to filter out dust in the air entering the fuel cell stack through the first air filter device and remove harmful gases in the air entering the fuel cell stack through the second air filter device.

10. The control method for the air filter system of a fuel cell according to claim 9, characterized in that, The method further includes: In response to the exhaust concentration not being greater than the preset concentration threshold, the system controls the first end of the first electronic valve to connect with the second end, controls the first end of the second electronic valve to connect with the second end, controls the first end of the third electronic valve to connect with the third end, and controls the third end of the fourth electronic valve to connect with the second end, so as to filter out dust in the air entering the fuel cell stack through the first air filter device.

11. The control method for the air filter system of a fuel cell according to claim 4, characterized in that, The method further includes: The intake pressure detected by the first sensor and the exhaust pressure detected by the second sensor are obtained; Calculate the first difference between the intake pressure and the exhaust pressure; Determine whether the first difference is greater than the first preset difference; In response to the first difference being greater than the first preset difference, the system controls the second and fourth ends of the first electronic valve to be connected, the first and second ends of the second electronic valve to be connected, the first and third ends of the third electronic valve to be connected, the second and fourth ends of the third electronic valve to be connected, the first and second ends of the fourth electronic valve to be connected, and the third and fourth ends of the fourth electronic valve to be connected, so as to purge the dust in the first air filter device through the air intake device of the electric stack air compressor and discharge it through the first vent pipe; wherein, the air intake device of the electric stack air compressor is connected to the third vent pipe.

12. The control method for the air filter system of a fuel cell according to claim 11, characterized in that, The method further includes: The intake air concentration detected by the third sensor and the exhaust air concentration detected by the fourth sensor are obtained; Calculate the second difference between the intake air concentration and the exhaust air concentration; Determine whether the second difference is greater than the second preset difference; In response to the second difference being greater than the second preset difference, the system controls the second and fourth ends of the first electronic valve to be connected, controls the first and second ends of the second electronic valve to be connected, controls the first and third ends of the third electronic valve to be connected, controls the second and fourth ends of the third electronic valve to be connected, controls the second and third ends of the fourth electronic valve to be connected, and controls the first and fourth ends of the fourth electronic valve to be connected, so as to purge the harmful gases in the second air filter device through the air intake device of the electric stack air compressor and discharge them through the third vent pipe; wherein, the air intake device of the electric stack air compressor is connected to the first vent pipe.

13. A control device for an air filter system of a fuel cell, characterized in that, include: The determination module is configured to determine the filtration mode of the fuel cell air filter system based on environmental conditions. The control module is configured to control the operating status of the first electronic valve, the second electronic valve, the third electronic valve, the fourth electronic valve, the first air filter, and the second air filter according to the filtration mode.

14. An electronic device, characterized in that, include: A processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the control method for the air filter system of a fuel cell as described in any one of claims 4 to 12.

15. A computer-readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the control method for the air filter system of a fuel cell as described in any one of claims 4 to 12.

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