Fuel cell operation method, device, electronic device and storage medium

Abstract

This application provides a fuel cell operating method, device, electronic device, and storage medium. The method includes: real-time monitoring of the actual voltage drop at the fuel cell's cathode and anode; determining the operating condition of each fuel cell electrode based on the relationship between the actual voltage drop and a voltage drop threshold; and implementing a corresponding control strategy based on the operating condition of the electrode to adjust the electrode's operating condition to normal operation. This application improves the operating stability of the fuel cell.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a fuel cell operation method, device, electronic device, and storage medium. Background Art

[0002] Fuel cells offer significant advantages such as high efficiency, zero pollution, low noise, and low infrared radiation, and are widely used in heavy-duty trucks, unmanned vessels, drones, submarines, and other fields. However, because fuel cells generate water during operation, improper water management can lead to dehydration or flooding. This can reduce fuel cell output power, shorten fuel cell lifespan, and even cause fuel cell shutdown, seriously compromising operational stability.

[0003] There is currently no good solution to the problem that fuel cells are prone to failure during operation. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a fuel cell operating method, device, electronic device, and storage medium to address the problem of fuel cell operation being prone to failure. The specific technical solution is as follows:

[0005] In a first aspect, a method for operating a fuel cell is provided, the method comprising:

[0006] Real-time monitoring of the actual pressure drop between the cathode and anode of the fuel cell;

[0007] determining the operating condition of each electrode of the fuel cell according to the relationship between the actual pressure drop and the pressure drop threshold;

[0008] A corresponding control strategy is adopted according to the working condition of the electrode to adjust the working condition of the electrode to normal operation.

[0009] Optionally, determining the operating condition of each electrode of the fuel cell according to the relationship between the actual pressure drop and the pressure drop threshold includes:

[0010] determining, according to operating parameters of the fuel cell, a first pressure drop threshold when the fuel cell is operating normally, a second pressure drop threshold when the fuel cell is first flooded, and a third pressure drop threshold when the fuel cell is severely first flooded;

[0011] For each electrode, do the following:

[0012] If the actual voltage drop of the electrode is less than the first voltage drop threshold, determining that the electrode is in a dehydrated state;

[0013] If the actual voltage drop of the electrode is greater than or equal to the first voltage drop threshold and less than the second voltage drop threshold, it is determined that the electrode is in a normal operating state;

[0014] If the actual voltage drop of the electrode is greater than or equal to the second voltage drop threshold and less than the third voltage drop threshold, determining that the electrode is in a first flooded state;

[0015] If the actual voltage drop of the electrode is greater than or equal to the third voltage drop threshold, it is determined that the electrode is in a second flooding state, wherein the flooding degree of the second flooding state is deeper than the flooding degree of the first flooding state.

[0016] Optionally, the control strategy includes at least one of the following four methods:

[0017] Adjust the electrode reaction gas inlet temperature, adjust the electrode reaction gas inlet humidity, adjust the stack operating temperature and open the pulse valve.

[0018] Optionally, taking a corresponding control strategy according to the working condition of the electrode includes:

[0019] If one electrode in the fuel cell is in a dehydrated state, the reaction gas inlet temperature of the electrode is lowered, or the reaction gas inlet humidity of the electrode is increased.

[0020] Optionally, taking a corresponding control strategy according to the working condition of the electrode includes:

[0021] If both electrodes in the fuel cell are in a dehydrated state, the operating temperature of the fuel cell stack is lowered, and the reaction gas inlet temperature of each electrode is lowered or the reaction gas inlet humidity of each electrode is increased.

[0022] Optionally, taking a corresponding control strategy according to the working condition of the electrode includes:

[0023] If the electrode is in the first flooded state, the reaction gas inlet temperature of the electrode is increased, or the reaction gas inlet humidity of the electrode is reduced.

[0024] Optionally, taking a corresponding control strategy according to the working condition of the electrode includes:

[0025] If the electrode is in the second flooded state, the pulse valve is controlled to open periodically, and the reaction gas inlet temperature of the electrode is increased or the reaction gas inlet humidity of the electrode is reduced.

[0026] In a second aspect, a fuel cell operating device is provided, the device comprising:

[0027] A monitoring module for real-time monitoring of the actual pressure drop at the cathode and anode of the fuel cell;

[0028] a determination module, configured to determine an operating condition of each electrode of the fuel cell based on a relationship between the actual pressure drop and the pressure drop threshold;

[0029] The adjustment module is used to adopt a corresponding control strategy according to the working condition of the electrode to adjust the working condition of the electrode to normal operation.

[0030] In a third aspect, an electronic device is provided, comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0031] Memory for storing computer programs;

[0032] The processor is configured to implement any of the steps of the fuel cell operation method when executing the program stored in the memory.

[0033] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements any of the steps of the fuel cell operation method.

[0034] Beneficial effects of the embodiments of the present application:

[0035] An embodiment of the present application provides a method for operating a fuel cell. By monitoring the relationship between the actual pressure drop and the pressure drop threshold of the fuel cell electrode, the operating condition of each electrode of the fuel cell is determined, and a corresponding control strategy is adopted to enable the electrode operating condition to be normal. The present application can restore the fuel cell to normal operation in a timely manner after an unfavorable state occurs in the fuel cell, thereby improving the operating stability of the fuel cell.

[0036] Of course, it is not necessary to achieve all of the above advantages at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] Figure 1 A flow chart of a method for operating a fuel cell provided in an embodiment of the present application;

[0039] Figure 2 A process flow chart of a fuel cell operation provided in an embodiment of the present application;

[0040] Figure 3A schematic structural diagram of a fuel cell operating device provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of this application and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0044] In order to solve the problems mentioned in the background technology, according to one aspect of the embodiments of the present application, an embodiment of a method for operating a fuel cell is provided.

[0045] An embodiment of the present application provides a fuel cell operation method, which can be applied to a fuel cell control unit and is used to adjust the fuel cell to a normal operating state when dehydration or first water flooding occurs during fuel cell operation.

[0046] The following will describe in detail a fuel cell operation method provided by an embodiment of the present application in conjunction with specific implementation methods. Figure 1 The specific steps are as follows:

[0047] Step 101: monitor the actual pressure drop of the cathode and anode of the fuel cell in real time.

[0048] The fuel cell sensor monitors the actual pressure drops Pc and Pa of the cathode and anode in real time and transmits the actual pressure drops to the fuel cell control unit.

[0049] Step 102: Determine the operating condition of each electrode of the fuel cell based on the relationship between the actual pressure drop and the pressure drop threshold.

[0050] The operating conditions include dry, normal operation, first flooding or second flooding.

[0051] The fuel cell control unit obtains pressure drop thresholds, including cathode pressure drop Pnc and anode pressure drop Pna during normal operation of the fuel cell, cathode pressure drop Pwfc and anode pressure drop Pwfa when first flooding occurs, and cathode pressure drop Pswfc and anode pressure drop Pswfa when severe first flooding occurs.

[0052] The fuel cell control unit compares the actual cathode and anode pressure drops Pc and Pa with the two-phase flow pressure drops Pnc and Pna during normal operation, the two-phase flow pressure drops Pwfc and Pwfa when the first water flooding occurs, and the two-phase flow pressure drops Pswfc and Pswfa when severe first water flooding occurs, and determines whether the operating condition inside the fuel cell is dry, normal operation, first water flooding or second water flooding.

[0053] Step 103: Adopt a corresponding control strategy according to the working condition of the electrode to adjust the working condition of the electrode to normal operation.

[0054] According to the different working conditions of the electrodes, the fuel cell control unit adopts different control strategies to adjust the working conditions of the electrodes to normal operation.

[0055] In the present application, the operating condition of each electrode of the fuel cell is determined by monitoring the relationship between the actual pressure drop and the pressure drop threshold of the fuel cell electrode, and the corresponding control strategy is adopted to make the electrode operating condition normal. The present application can restore the fuel cell to normal operation in time after an unfavorable state occurs in the fuel cell, thereby improving the operating stability of the fuel cell.

[0056] As an optional embodiment, determining the operating condition of each electrode of the fuel cell based on the relationship between the actual pressure drop and the pressure drop threshold includes: determining the first pressure drop threshold when the fuel cell is operating normally, the second pressure drop threshold when the fuel cell is first flooded, and the third pressure drop threshold when the fuel cell is severely flooded based on the operating parameters of the fuel cell; performing the following operations for each electrode: if the actual pressure drop of the electrode is less than the first pressure drop threshold, determining that the electrode is in a dehydrated state; if the actual pressure drop of the electrode is greater than or equal to the first pressure drop threshold and less than the second pressure drop threshold, determining that the electrode is in a normal operating state; if the actual pressure drop of the electrode is greater than or equal to the second pressure drop threshold and less than the third pressure drop threshold, determining that the electrode is in a first flooded state; if the actual pressure drop of the electrode is greater than or equal to the third pressure drop threshold, determining that the electrode is in a second flooded state, wherein the degree of flooding in the second flooded state is deeper than the degree of flooding in the first flooded state.

[0057] Based on empirical formulas, the two-phase flow pressure drops Pnc and Pna during normal operation of the fuel cell, the two-phase flow pressure drops Pwfc and Pwfa when the first water flooding occurs, and the two-phase flow pressure drops Pswfc and Pswfa when severe first water flooding occurs are calculated using parameters such as the stack operating current, excess coefficient, operating temperature and relative humidity.

[0058] If Pc < Pnc, it is determined that the cathode is in a dehydrated state, and if Pa < Pna, it is determined that the anode is in a dehydrated state;

[0059] If Pnc≤Pc<Pwfc, it is determined that the electrode is in normal operation; if Pna≤Pa<Pwfa, it is determined that the electrode is in normal operation;

[0060] If Pwfc≤Pc<Pswfc, it is determined that the electrode is in the first flooded state; if Pwfa≤Pa<Pswfa, it is determined that the electrode is in the first flooded state;

[0061] If Pswfc≤Pc, it is determined that the electrode is in the second water-flooded state; if Pswfa≤Pa, it is determined that the electrode is in the second water-flooded state.

[0062] Changes in the flow pattern within the fuel cell will cause changes in the pressure drop. Therefore, different pressure drops correspond to different flow patterns in the fuel cell, that is, different internal water distribution states. Therefore, as long as the actual pressure drop of the fuel cell is detected in this range, it indicates that the fuel cell is in this operating condition.

[0063] Generally speaking, due to the hygroscopic effect of the reaction gas and the accumulation of generated water in the outlet area, the inlet area is prone to dehydration, and the outlet area is prone to second flooding. However, we generally make the water distribution more uniform through reasonable design. The different states of the fuel cell divided in this application are defined based on the overall pressure drop of the fuel cell, which reflects the overall state of the fuel cell. The dehydration, first flooding and second flooding mentioned above are random. For example, the water droplets inside the flow channel suddenly aggregate into large water droplets to block the flow channel. At this time, the actual pressure drop will increase significantly, and the fuel cell enters the second flooding state.

[0064] As an optional implementation, the control strategy includes at least one of the following four methods: adjusting the electrode reaction gas inlet temperature, adjusting the electrode reaction gas inlet humidity, adjusting the stack operating temperature, and opening the pulse valve.

[0065] Lowering the operating temperature of the battery stack can reduce the evaporation of water in the battery stack, thereby alleviating the dehydration of the battery; conversely, increasing the operating temperature of the battery stack increases the evaporation of water in the battery stack to reduce the first flooding.

[0066] Increasing the reaction gas inlet humidity and lowering the reaction gas inlet temperature can prevent the fuel cell reaction gas from absorbing moisture and reduce the dehydration of the fuel cell; conversely, lowering the reaction gas relative humidity and increasing the reaction gas inlet temperature can enhance its moisture absorption capacity, which is beneficial to alleviate the first water flooding inside the fuel cell stack.

[0067] The solenoid valve pulse can use the gas pressure difference inside and outside the battery stack to blow the liquid water in the battery stack out of the battery, alleviating the second water flooding inside the battery stack.

[0068] Dehydration, normal operation, first flooding, and second flooding are all operating conditions that may be encountered during fuel cell operation. Different operating conditions have different impacts on fuel cell performance and require different solutions, so they need to be judged separately. This application provides four general control strategies for the above operating conditions:

[0069] First, if one of the electrodes in the fuel cell is in a dehydrated state, reduce the reactant gas inlet temperature of the electrode or increase the reactant gas inlet humidity of the electrode;

[0070] Second, if both electrodes in the fuel cell are in a dehydrated state, reduce the operating temperature of the fuel cell stack and reduce the reaction gas inlet temperature of each electrode or increase the reaction gas inlet humidity of each electrode.

[0071] Third, if the electrode is in the first flooded state, the reaction gas inlet temperature of the electrode is increased, or the reaction gas inlet humidity of the electrode is reduced.

[0072] Fourth, if the electrode is in the second flooded state, the pulse valve is controlled to open periodically, and the reaction gas inlet temperature of the electrode is increased or the reaction gas inlet humidity of the electrode is reduced.

[0073] The present application can monitor whether a fuel cell is experiencing a dehydration condition, thereby avoiding the increase in operating costs caused by the stack operating in a dehydration condition for a long time; corresponding solutions are provided for the two conditions of cathode first flooding and anode first flooding, thereby enabling the traditional patent to resolve the contradictory condition of cathode first flooding leading to anode dehydration; the first flooding condition in the fuel cell is divided into two levels, first flooding and second flooding, thereby being able to resolve the adverse condition of the first flooding at the early stage of the first flooding, thereby avoiding the adverse effects of the fuel cell operating in the first flooding condition for a long time on the battery performance and life, which also avoids the unstable operation of the fuel cell during the second flooding. However, due to the randomness of the accumulation of liquid water inside the battery, under the above control strategy, if the fuel cell experiences a second flooding condition, it can also be handled and resolved through the corresponding control strategy. The present application improves the operating efficiency, operating stability and life of the fuel cell.

[0074] This application provides 16 embodiments, covering possible operating conditions of fuel cells and corresponding control strategies.

[0075] Tci is the cathode reaction gas inlet temperature; Tai is the anode reaction gas inlet temperature; RHci is the cathode reaction gas inlet humidity; RHai is the anode reaction gas inlet humidity; and Ts is the stack operating temperature.

[0076] 1) If Pc<Pnc, Pa<Pna, the fuel cell enters the Pc1Pa1 state, indicating that the flow inside the stack is single-phase flow, and the fuel cell as a whole will enter a dehydrated state. At this time, action 1 needs to be performed (reduce Ts, reduce Tci or increase RHci, reduce Tai or increase RHai).

[0077] 2) If Pc<Pnc, Pna<Pa<Pwfa, the fuel cell enters the Pc1Pa2 state, indicating that the cathode of the fuel cell stack will enter a dehydrated state and the anode will operate normally. At this time, action 2 needs to be performed (increase RHci or reduce Tci).

[0078] 3) If Pc<Pnc, Pwfa<Pa<Pswfa, the fuel cell enters the Pc1Pa3 state, indicating that the cathode of the stack will enter the dehydrated state and the anode will enter the first flooded state. At this time, action 3 needs to be performed (increase RHci or reduce Tci, reduce RHai or increase Tai).

[0079] 4) If Pc<Pnc, Pswfa<Pa, the fuel cell enters the Pc1Pa4 state, indicating that the cathode of the fuel cell stack will enter the dehydrated state and the anode will enter the second flooded state. At this time, action 4 needs to be performed (increase RHci or reduce Tci, reduce RHai or increase Tai and the anode enters the pulse drainage state, and the pulse valve is closed for 30 seconds and opened for 1 second in each cycle).

[0080] 5) If Pnc<Pc<Pwfc, Pa<Pna, the fuel cell enters the Pc2Pa1 state, indicating that the cathode of the fuel cell stack is in normal working condition and the anode is about to enter the dehydration state. At this time, action 5 (reducing Tai or increasing RHai) needs to be performed.

[0081] 6) If Pnc<Pc<Pwfc, Pna<Pa<Pwfa, the fuel cell enters the Pc2Pa2 state, indicating that the anode and cathode of the fuel cell are in normal working state. At this time, action 6 does not need to be executed.

[0082] 7) If Pnc<Pc<Pwfc, Pwfa<Pa<Pswfa, the fuel cell enters the Pc2Pa3 state, indicating that the fuel cell cathode is in normal working state and the anode is in the first flooding state. At this time, action 7 (reducing RHai or increasing Tai) needs to be executed.

[0083] 8) If Pnc<Pc<Pwfc, Pswfa<Pa, the fuel cell enters the Pc2Pa4 state, indicating that the fuel cell cathode is in normal working condition and the anode is in the second flooding state. At this time, action 8 needs to be performed (reduce RHai or increase Tai and the anode enters the pulse drainage state, and the pulse valve is closed for 30s and opened for 1s in each cycle).

[0084] 9) If Pwfc<Pc<Pswfc, Pa<Pna, the fuel cell enters the Pc3Pa1 state, indicating that the cathode of the fuel cell stack is in the first flooded state and the anode is about to enter the dehydrated state. At this time, action 9 needs to be performed (increase Tci or reduce RHci, reduce Tai or increase RHai).

[0085] 10) If Pwfc<Pc<Pswfc, Pna<Pa<Pwfa, the fuel cell enters the Pc3Pa2 state, indicating that the cathode of the fuel cell stack is in the first flooded state and the anode enters the normal working state. At this time, action 10 needs to be performed (increase Tci or reduce RHci).

[0086] 11) If Pwfc<Pc<Pswfc, Pwfa<Pa<Pswfa, the fuel cell enters the Pc3Pa2 state, indicating that both the anode and cathode of the fuel cell stack have entered the unfavorable working condition of the first water flooding. At this time, action 11 needs to be performed (increase Ts, increase Tci or reduce RHci, reduce RHai or increase Tai).

[0087] 12) If Pwfc<Pc<Pswfc, Pswfa<Pa, the fuel cell enters the Pc3Pa4 state, indicating that the cathode of the fuel cell stack enters the first unfavorable condition of water flooding, and the anode enters the second unfavorable condition of water flooding. At this time, action 12 needs to be performed (increase Ts, increase Tci or reduce RHci, reduce RHai or increase Tai, and the anode enters the pulse drainage state, and the pulse valve is closed for 30 seconds and opened for 1 second in each cycle).

[0088] 13) If Pswfc<Pc, Pa<Pna, the fuel cell enters the Pc4Pa1 state, indicating that the cathode of the stack is in the second flooded state and the anode is about to enter the dehydrated state. At this time, action 13 needs to be performed (increase Tci or reduce RHci and reduce the cathode working pressure and the cathode enters the pulse drainage state, the pulse valve is closed for 20s and opened for 1s in each cycle; reduce Tai or increase RHai).

[0089] 14) If Pswfc<Pc, Pna<Pa<Pwfa, the fuel cell enters the Pc4Pa2 state, indicating that the cathode of the stack is in the second flooding state and the anode is working normally. At this time, action 14 needs to be performed (increase Tci or reduce RHci and reduce the cathode working pressure and the cathode enters the pulse drainage state, and the pulse valve is closed for 20s and opened for 1s in each cycle).

[0090] 15) If Pswfc<Pc, Pwfa<Pa<Pswfa, the fuel cell enters the Pc4Pa3 state, indicating that the cathode of the stack is in the second water flooding state and the anode is in the first water flooding state. At this time, action 15 needs to be performed (increase Ts; increase Tci or reduce RHci and reduce the cathode working pressure and the cathode enters the pulse drainage state, the pulse valve is closed for 20s and opened for 1s in each cycle; increase Tai or reduce RHai).

[0091] 16) If Pswfc<Pc, Pswfa<Pa, the fuel cell enters the Pc4Pa4 state, indicating that the cathode of the stack is in the second water flooding state and the anode is in the second water flooding state. At this time, action 16 needs to be performed (increase Ts; increase Tci or reduce RHci, and reduce the cathode working pressure and the cathode enters the pulse drainage state, the pulse valve is closed for 20s and opened for 1s per cycle; increase Tai or reduce RHai, and the anode enters the pulse drainage state, the pulse valve is closed for 30s and opened for 1s per cycle).

[0092] The above steps need to be executed cyclically during the operation of the fuel cell to ensure that the moisture content of the fuel cell is in a reasonable state. When the fuel cell is shut down, the subsystem is also shut down.

[0093] Optionally, the embodiment of the present application further provides a processing flow chart for the operation of a fuel cell, such as Figure 2 As shown, the specific steps are as follows.

[0094] Based on the fuel cell's operating parameters, the two-phase flow pressure drops (Pnc and Pna) during normal fuel cell operation, the two-phase flow pressure drops (Pwfc and Pwfa) during first flooding, and the two-phase flow pressure drops (Pswfc and Pswfa) during severe first flooding are calculated. The actual cathode and anode pressure drops (Pc and Pa) are measured. The relative magnitudes of Pc with Pnc, Pwfc, and Pswfc, and the relative magnitudes of Pa with Pna, Pwfa, and Pswfa, are compared to determine the operating condition of each electrode. Different control strategies are implemented for each operating condition.

[0095] Based on the same technical concept, the embodiment of the present application also provides an operating device of a fuel cell, such as Figure 3 As shown, the device includes:

[0096] The monitoring module 301 is used to monitor the actual pressure drop of the cathode and anode of the fuel cell in real time;

[0097] a determination module 302 for determining the operating condition of each electrode of the fuel cell based on the relationship between the actual pressure drop and the pressure drop threshold;

[0098] The adjustment module 303 is used to adopt a corresponding control strategy according to the working condition of the electrode, and adjust the working condition of the electrode to normal operation.

[0099] Optionally, the determination module 302 is configured to:

[0100] determining, according to operating parameters of the fuel cell, a first pressure drop threshold when the fuel cell is operating normally, a second pressure drop threshold when the fuel cell is first flooded, and a third pressure drop threshold when the fuel cell is severely flooded;

[0101] For each electrode, do the following:

[0102] If the actual voltage drop of the electrode is less than the first voltage drop threshold, it is determined that the electrode is in a dehydrated state;

[0103] If the actual voltage drop of the electrode is greater than or equal to the first voltage drop threshold and less than the second voltage drop threshold, it is determined that the electrode is in a normal operating state;

[0104] If the actual voltage drop of the electrode is greater than or equal to the second voltage drop threshold and less than the third voltage drop threshold, it is determined that the electrode is in the first flooded state;

[0105] If the actual voltage drop of the electrode is greater than or equal to the third voltage drop threshold, it is determined that the electrode is in a second flooding state, wherein the flooding degree of the second flooding state is deeper than the flooding degree of the first flooding state.

[0106] Optionally, the control strategy includes at least one of the following four methods:

[0107] Adjust the electrode reaction gas inlet temperature, adjust the electrode reaction gas inlet humidity, adjust the stack operating temperature and open the pulse valve.

[0108] Optionally, the adjustment module 303 is configured to:

[0109] If one electrode in the fuel cell is in a dehydrated state, the reaction gas inlet temperature of the electrode is lowered, or the reaction gas inlet humidity of the electrode is increased.

[0110] Optionally, the adjustment module 303 is configured to:

[0111] If both electrodes in the fuel cell are in a dehydrated state, the operating temperature of the fuel cell stack is reduced, and the reaction gas inlet temperature of each electrode is reduced or the reaction gas inlet humidity of each electrode is increased.

[0112] Optionally, the adjustment module 303 is configured to:

[0113] If the electrode is in the first flooded state, the reaction gas inlet temperature of the electrode is increased, or the reaction gas inlet humidity of the electrode is reduced.

[0114] Optionally, the adjustment module 303 is configured to:

[0115] If the electrode is in the second flooded state, the pulse valve is controlled to open periodically, and the reaction gas inlet temperature of the electrode is increased or the reaction gas inlet humidity of the electrode is reduced.

[0116] According to another aspect of the embodiment of the present application, the present application provides an electronic device, such as Figure 3 As shown, it includes a memory 303, a processor 301, a communication interface 302 and a communication bus 304. The memory 303 stores a computer program that can be run on the processor 301. The memory 303 and the processor 301 communicate through the communication interface 302 and the communication bus 304. When the processor 301 executes the computer program, the steps of the above method are implemented.

[0117] The memory and processor in the electronic device communicate via a communication bus and a communication interface. The communication bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus may be divided into an address bus, a data bus, a control bus, and the like.

[0118] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor.

[0119] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

[0120] According to another aspect of the embodiments of the present application, a computer-readable medium having non-volatile program code executable by a processor is provided.

[0121] Optionally, in an embodiment of the present application, a computer-readable medium is configured to store program code for the processor to execute the above method.

[0122] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0123] When implementing the embodiments of the present application, reference may be made to the above embodiments, which have corresponding technical effects.

[0124] It is understood that the embodiments described herein may be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or a combination thereof.

[0125] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0126] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0127] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0128] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0129] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0130] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0131] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0132] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and are not necessarily used to distinguish one entity or operation from another entity or operation.

[0133] Furthermore, the terms "comprises," "includes," or any other variation thereof are intended to encompass a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only

[0134] Those elements, and also include other elements not expressly listed, or include elements inherent to such process, method, article or apparatus. In the absence of more limitations

[0135] In the present invention, an element defined by the phrase "comprises a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0136] The above description is only a specific embodiment of the present application, so that those skilled in the art can understand

[0137] Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be modified without departing from the spirit of the present invention.

[0138] Therefore, the present application will not be limited to the embodiments shown herein, but should be consistent with the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for operating a fuel cell, characterized in that: The method comprises: Real-time monitoring of the actual pressure drop between the cathode and anode of the fuel cell; determining an operating condition of each electrode of the fuel cell based on a relationship between the actual pressure drop and the pressure drop threshold, wherein the operating conditions include dry, normal operation, a first flooding condition, or a second flooding condition, wherein the second flooding condition is more severe than the first flooding condition, and the second flooding condition is used to indicate that water droplets in a flow channel have aggregated into large droplets and blocked the flow channel; Adopting a corresponding control strategy according to the working condition of the electrode to adjust the working condition of the electrode to normal operation; The control strategy adopted according to the working condition of the electrode includes: If the electrode is in the second flooded state, the pulse valve is controlled to open periodically, and the reaction gas inlet temperature of the electrode is increased or the reaction gas inlet humidity of the electrode is reduced.

2. The method according to claim 1, characterized in that Determining the operating condition of each electrode of the fuel cell according to the relationship between the actual pressure drop and the pressure drop threshold includes: determining, according to operating parameters of the fuel cell, a first pressure drop threshold when the fuel cell is operating normally, a second pressure drop threshold when the fuel cell is first flooded, and a third pressure drop threshold when the fuel cell is severely first flooded; For each electrode, do the following: If the actual voltage drop of the electrode is less than the first voltage drop threshold, determining that the electrode is in a dehydrated state; If the actual voltage drop of the electrode is greater than or equal to the first voltage drop threshold and less than the second voltage drop threshold, it is determined that the electrode is in a normal operating state; If the actual voltage drop of the electrode is greater than or equal to the second voltage drop threshold and less than the third voltage drop threshold, determining that the electrode is in a first flooded state; If the actual voltage drop of the electrode is greater than or equal to the third voltage drop threshold, it is determined that the electrode is in a second flooding state, wherein the flooding degree of the second flooding state is deeper than the flooding degree of the first flooding state.

3. The method according to claim 1, characterized in that The control strategy includes at least one of the following four methods: Adjust the electrode reaction gas inlet temperature, adjust the electrode reaction gas inlet humidity, adjust the stack operating temperature and open the pulse valve.

4. The method according to claim 3, characterized in that The control strategy adopted according to the working condition of the electrode includes: If one electrode in the fuel cell is in a dehydrated state, the reaction gas inlet temperature of the electrode is lowered, or the reaction gas inlet humidity of the electrode is increased.

5. The method according to claim 3, characterized in that The control strategy adopted according to the working condition of the electrode includes: If both electrodes in the fuel cell are in a dehydrated state, the operating temperature of the fuel cell stack is lowered, and the reaction gas inlet temperature of each electrode is lowered or the reaction gas inlet humidity of each electrode is increased.

6. The method according to claim 3, characterized in that The control strategy adopted according to the working condition of the electrode includes: If the electrode is in the first flooded state, the reaction gas inlet temperature of the electrode is increased, or the reaction gas inlet humidity of the electrode is reduced.

7. A fuel cell operating device, characterized in that: The device comprises: A monitoring module for real-time monitoring of the actual pressure drop at the cathode and anode of the fuel cell; a determination module, configured to determine an operating condition of each electrode of the fuel cell based on a relationship between the actual pressure drop and the pressure drop threshold, wherein the operating conditions include dry, normal operation, a first flooding condition, or a second flooding condition, wherein the second flooding condition is more severe than the first flooding condition, and the second flooding condition is used to indicate that water droplets in the flow channel have aggregated into large droplets, blocking the flow channel; An adjustment module, configured to adopt a corresponding control strategy according to the working condition of the electrode, and adjust the working condition of the electrode to normal operation; The control strategy adopted according to the working condition of the electrode includes: If the electrode is in the second flooded state, the pulse valve is controlled to open periodically, and the reaction gas inlet temperature of the electrode is increased or the reaction gas inlet humidity of the electrode is reduced.

8. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; A processor, configured to implement the method steps described in any one of claims 1 to 6 when executing a program stored in a memory.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps of any one of claims 1 to 6 are implemented.

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