Fuel cell drainage control method and device, storage medium and electronic equipment

Abstract

The embodiment of the invention provides a fuel cell drainage control method and device, and a storage medium. The method comprises the following steps: acquiring operation parameters of a current working condition of a fuel cell; determining the instantaneous anode water content of the anode of the fuel cell according to the operating parameters; determining to-be-discharged moisture of the fuel cell anode based on a relationship between the instantaneous anode water content and a preset anode water content threshold value corresponding to the current working condition; and adjusting working parameters of a drain valve in the fuel cell based on the to-be-discharged moisture. According to the technical scheme provided by the embodiment of the invention, after the drain valve operating under the working parameters can further drain water flowing to the anode discharge port out of the hydrogen supply system, even if the hydrogen circulating pump pumps hydrogen mixed with water into the anode through the anode discharge port again, the hydrogen can be discharged out of the hydrogen supply system; and the fuel cell is not easy to generate a hydrogen deficiency phenomenon in the working process or the condition that the performance of the fuel cell is reduced due to the fact that an individual single cell in the fuel cell is submerged by water is not easy to cause.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cell control, and in particular, to a fuel cell drainage control method, device, storage medium, and electronic device. Background Technique

[0002] A fuel cell is an energy conversion device. Its specific working process is to control the air flowing through the cathode of the fuel cell stack and the hydrogen flowing through the anode of the fuel cell stack to generate electrical energy through the reaction on both sides of the membrane electrode, that is, to convert chemical energy into electrical energy. At the same time, water molecules will also be generated during the reaction of air and hydrogen. These water molecules fill the fuel cell stack in a gaseous or liquid form. Part of the water is discharged through the discharge port corresponding to the anode, and the other part of the water is discharged through the discharge port corresponding to the cathode.

[0003] In the related art, considering that part of the unreacted hydrogen will leak out while the discharge port corresponding to the anode is draining water, in order to improve the hydrogen utilization rate, a hydrogen circulation pump is usually added to the hydrogen supply system to connect the anode discharge port and the anode inlet through the hydrogen circulation pump. Then, by controlling the hydrogen circulation pump, the leaked hydrogen from the anode discharge port is pumped back into the anode to avoid waste of hydrogen resources. However, since the anode discharge port is originally used to discharge the water in the anode, if the hydrogen circulation pump pumps the water discharged from the anode discharge port back into the anode, it will inevitably lead to a decrease in the proportion of hydrogen in the fuel cell stack and hinder the delivery of hydrogen to the membrane electrode, resulting in an increased possibility of under-hydrogen phenomenon during the operation of the fuel cell, affecting the service life of the fuel cell stack, and may also cause individual single cells in the fuel cell to be flooded with water, resulting in a decrease in the performance of the fuel cell. Summary of the Invention

[0004] To solve the above technical problems, embodiments of the present application provide a fuel cell drainage control method, device, computer-readable storage medium, and electronic device.

[0005] According to one aspect of the embodiments of the present application, a fuel cell drainage control method is provided, including: obtaining operation parameters of the current working condition of the fuel cell; determining the instantaneous anode water content of the anode of the fuel cell according to the operation parameters; determining the water to be discharged from the anode of the fuel cell based on the relationship between the instantaneous anode water content and a preset anode water content threshold corresponding to the current working condition; and adjusting the working parameters of the drainage valve in the fuel cell based on the water to be discharged.

[0006] According to one aspect of the embodiments of the present application, a fuel cell drainage control device is provided, including: an acquisition module configured to acquire the operating parameters of the current working condition of the fuel cell; a first calculation module configured to determine the instantaneous anode water content of the anode of the fuel cell according to the operating parameters; a second calculation module configured to determine the water to be discharged from the anode of the fuel cell based on the relationship between the instantaneous anode water content and a preset anode water content threshold corresponding to the current working condition; and an adjustment module configured to adjust the working parameters of the drainage valve in the fuel cell based on the water to be discharged.

[0007] In some embodiments of the present application, based on the foregoing solution, the first calculation module is further configured to: during the process of determining the instantaneous anode water content of the anode of the fuel cell according to the operating parameters, calculate the recovered water at the anode inlet and the discharged water at the anode outlet according to the operating parameters; and determine the instantaneous anode water content based on the recovered water and the discharged water.

[0008] In some embodiments of the present application, based on the foregoing solution, the first calculation module is further configured to: before determining the instantaneous anode water content based on the recovered water and the discharged water, calculate the absorbed water in the gas diffusion layer in the anode according to the operating parameters, where the absorbed water represents the water permeating from the recovered water into the gas diffusion layer; and determine the instantaneous anode water content based on the absorbed water, the recovered water, and the discharged water.

[0009] In some embodiments of the present application, based on the foregoing solution, the first calculation module is further configured to: during the process of calculating the absorbed water in the gas diffusion layer in the anode according to the operating parameters, calculate the water generated by the electrochemical reaction in the anode according to the operating parameters; obtain the transfer coefficient corresponding to the gas diffusion layer; and calculate the absorbed water in the gas diffusion layer in the anode based on the water generated by the electrochemical reaction and the transfer coefficient.

[0010] In some embodiments of the present application, based on the foregoing solution, the first calculation module is further configured to: before calculating the absorbed water in the gas diffusion layer in the anode based on the water generated by the electrochemical reaction and the transfer coefficient, determine the residence time of the absorbed water based on the transfer coefficient; the residence time represents the time taken for the absorbed water permeating from one side of the gas diffusion layer to be discharged from the other side of the gas diffusion layer; and calculate the absorbed water in the gas diffusion layer in the anode according to the residence time, the water generated by the electrochemical reaction, and the transfer coefficient.

[0011] In some embodiments of the present application, based on the foregoing solution, the adjustment module is further configured to: after adjusting the operating parameters of the drain valve in the fuel cell based on the moisture to be discharged, obtain the minimum voltage value of a single cell in the fuel cell; determine a first correction coefficient of the drain valve according to the minimum voltage value and a preset minimum voltage value corresponding to the current operating condition of the fuel cell; and adjust the operating parameters of the drain valve according to the first correction coefficient.

[0012] In some embodiments of the present application, based on the foregoing solution, the adjustment module is further configured to: after adjusting the operating parameters of the drain valve in the fuel cell based on the moisture to be discharged, obtain the pressure value of the anode in the fuel cell; determine a second correction coefficient of the drain valve according to the pressure value and a preset pressure value corresponding to the current operating condition of the fuel cell; and adjust the operating parameters of the drain valve according to the second correction coefficient.

[0013] According to one aspect of the embodiments of the present application, there is provided a computer-readable storage medium having stored thereon computer-readable instructions that, when executed by a processor of a computer, cause the computer to execute the fuel cell drainage control method as described in the above embodiments.

[0014] According to one aspect of the embodiments of the present application, there is provided an electronic device including: one or more processors; a storage device for storing one or more programs that, when executed by the one or more processors, cause the electronic device to implement the fuel cell drainage control method as described in the above embodiments.

[0015] In the technical solution of the embodiments of the present application, the instantaneous anode moisture content of the anode of the fuel cell is determined by the operating parameters of the current operating condition of the fuel cell obtained, and then the moisture to be discharged from the anode cell is determined based on the relationship between the instantaneous anode moisture content and the preset anode moisture threshold corresponding to the current operating condition. Thus, the operating parameters of the drain valve in the fuel cell are adjusted based on the moisture to be discharged, so that after the drain valve operating under these operating parameters further discharges the water flowing to the anode discharge port to outside the hydrogen supply system, even if the hydrogen circulation pump pumps the hydrogen mixed with moisture back into the anode through the anode inlet, it is not easy to cause the phenomenon of hydrogen deficiency during the operation of the fuel cell, or cause individual single cells in the fuel cell to be flooded with water, resulting in a decrease in the performance of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a fuel cell related to the present application.

[0018] Figure 2 is a flowchart of a fuel cell drainage control method shown in an exemplary embodiment of the present application.

[0019] Figure 3 is Figure 2 a flowchart of step S220 in the shown embodiment in an exemplary embodiment.

[0020] Figure 4 is Figure 3 a flowchart of before step S320 in the shown embodiment in an exemplary embodiment.

[0021] Figure 5 is Figure 1 a flowchart of after step S140 in the shown embodiment in an exemplary embodiment.

[0022] Figure 6 is Figure 1 a flowchart of after step S140 in the shown embodiment in another embodiment.

[0023] Figure 7 is a flowchart of a fuel cell drainage control method shown in another exemplary embodiment of the present application.

[0024] Figure 8 is a block diagram of a fuel cell drainage control device shown in an exemplary embodiment of the present application.

[0025] Figure 9 is a schematic structural diagram of an electronic device shown in an exemplary embodiment of the present application. Detailed Embodiments

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0027] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0028] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the drawings are only illustrative and do not necessarily include all the contents and operations / steps, nor do they have to be executed in the described order. For example, some operations / steps may be decomposed, while some operations / steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0030] It should be noted that: "a plurality of" mentioned in this article means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0031] Figure 1 is a schematic structural diagram of an exemplary fuel cell. As Figure 1 shown, the fuel cell 100 includes an air supply system 110, a fuel cell stack 120, and a hydrogen supply system 130.

[0032] It should be noted that the working process of the fuel cell 100 is to generate electrical energy by controlling the reaction of the air flowing through the cathode of the fuel cell stack 120 and the hydrogen flowing through the anode of the fuel cell stack 120 on both sides of the membrane electrode. At the same time, water molecules will be generated during the reaction of air and hydrogen, and these water molecules fill the fuel cell stack 120 in a gaseous or liquid form. Part of the water is discharged through the discharge port corresponding to the anode, and the other part of the water is discharged through the discharge port corresponding to the cathode.

[0033] In the related art, considering that some unreacted hydrogen will leak out while the discharge port corresponding to the anode is draining water, in order to improve the utilization rate of hydrogen, a hydrogen circulation pump 140 is usually added to the hydrogen supply system 130 to connect the anode discharge port and the inlet of the anode through the hydrogen circulation pump 140. Furthermore, by controlling the opening and closing of the hydrogen circulation pump 140, the leaked hydrogen at the discharge port can re-enter the anode, avoiding waste of hydrogen resources. However, since water in the anode is also discharged from the discharge port of the anode, if the water in the anode cannot be fully discharged and is pumped back into the anode by the hydrogen circulation pump 140, it will inevitably lead to a decrease in the proportion of hydrogen in the fuel cell stack 120 and hinder the delivery of hydrogen to the membrane electrode, increasing the possibility of hydrogen deficiency during the operation of the fuel cell 100, affecting the service life of the fuel cell stack 120, and may also cause individual single cells in the fuel cell 100 to be flooded with water, resulting in a decline in the performance of the fuel cell 100.

[0034] To avoid this problem, the technical solution of the embodiment of the present application proposes a fuel cell drainage control method, as specifically referred to Figure 2 as shown. This method is applicable to Figure 1 the fuel cell shown. This method can be specifically executed by the controller set in Figure 1 the fuel cell shown. Of course, it can also be executed by the controller set in the vehicle equipped with Figure 1 the fuel cell shown, and no limitation is made here. This method at least includes steps S210 to S240, which are introduced in detail as follows:

[0035] In step S210, the operating parameters of the fuel cell under the current working condition are obtained.

[0036] It should be noted that the operating parameters represent the measured parameters of the monitored fuel cell under the current working condition. For example, the pressure of the anode, current density, temperature and humidity at the inlet of the anode discharge port, etc.

[0037] Among them, the method for obtaining the operating parameters of the fuel cell under the current working condition can be flexibly set according to needs. In one example, the operating parameters corresponding to the current working condition of the fuel cell can be obtained at a preset acquisition interval duration; the preset acquisition interval duration can be flexibly adjusted according to needs. For example, the higher the output power of the fuel cell under the current working condition, the shorter the corresponding preset acquisition interval duration, so as to improve the update speed of determining the operating status of the fuel cell stack, facilitate timely detection of faults, and thus reduce the resource occupancy rate while improving the overall safety.

[0038] In another example, in response to the discharge signal, the operating parameters of the fuel cell under the current working condition can be obtained to focus on monitoring the operating parameters when draining water at the discharge port of the anode.

[0039] In step S220, the instantaneous anode water content of the fuel cell anode is determined according to the operating parameters.

[0040] It should be noted that the instantaneous anode water content characterizes the water contained in the anode of the fuel cell operating under the current operating conditions.

[0041] In the embodiment of the present application, after obtaining the operating parameters of the current operating conditions of the fuel cell, the instantaneous anode water content of the fuel cell anode can be determined according to the operating parameters.

[0042] Among them, the method for determining the instantaneous anode water content of the fuel cell anode according to the operating parameters can be flexibly set according to needs. In one example, the water flowing through the discharge port of the fuel cell anode can be calculated first according to the operating parameters, and then the water discharged through the discharge port of the fuel cell anode can be calculated according to the operating parameters. Finally, the difference between the water flowing through the discharge port and the water discharged through the discharge port is calculated, and this difference is the determined instantaneous anode water content of the fuel cell anode.

[0043] In another example, considering that the water discharged into the fuel cell anode can also diffuse to the cathode of the fuel cell and then be discharged through the discharge port of the fuel cell cathode. That is to say, on the basis of the above example, the water diffused from the water discharged into the hydrogen inlet of the fuel cell anode to the cathode of the fuel cell can be further calculated according to the operating parameters, so that the difference obtained by subtracting the water discharged through the discharge port and the water diffused to the cathode of the fuel cell from the water discharged into the port in turn is used as the instantaneous anode water content of the fuel cell anode to improve the accuracy of the instantaneous anode water content of the fuel cell anode determined according to the operating parameters.

[0044] In step S230, the water to be discharged from the anode cell is determined based on the relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current operating conditions.

[0045] It should be noted that the preset anode water content threshold characterizes the water content calibrated in the fuel cell anode under the current operating conditions, that is, the critical water content value at which the water in the fuel cell anode causes the phenomenon of hydrogen deficiency or the critical water content value at which the single cell in the fuel cell is flooded with water, resulting in a decrease in the performance of the fuel cell.

[0046] Since the output power of the fuel cell varies under different working conditions, the demand for hydrogen and oxygen in the fuel cell stack is also different under different working conditions. Correspondingly, the anode water content that causes the phenomenon of hydrogen deficiency or floods individual single cells and degrades the performance is also different under different working conditions. Therefore, in the embodiments of the present application, after determining the instantaneous anode water content of the fuel cell anode, the water to be discharged from the fuel cell anode can be determined based on the relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition.

[0047] Among them, the method of determining the water to be discharged from the fuel cell anode based on the relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition can be flexibly set as needed. In one example, the magnitude relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition can be determined first. If it is determined that the instantaneous anode water content is greater than the preset anode water content threshold according to the magnitude relationship, the difference between the instantaneous anode water content and the preset anode water content threshold is calculated, and this difference is used as the water to be discharged from the determined fuel cell anode.

[0048] In another example, the proportion relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition can be determined first. The proportion level of the instantaneous anode water content is determined according to the proportion relationship, and the water to be discharged corresponding to the proportion level is used as the water to be discharged from the determined fuel cell anode.

[0049] In step S240, the working parameters of the drain valve in the fuel cell are adjusted based on the water to be discharged.

[0050] It should be noted that the drain valve is arranged in the hydrogen supply system. Referring to Figure 1 as shown, the drain valve 150 is between the discharge port of the anode and the hydrogen circulation pump 140. The drain valve 150 is used to discharge the water or gas flowing to the discharge port to the outside of the hydrogen supply system 130.

[0051] In the embodiments of the present application, after determining the water to be discharged from the fuel cell anode, the working parameters of the drain valve in the fuel cell can be adjusted based on the water to be discharged, so that the drain valve operating under these working parameters can further discharge the water flowing to the anode discharge port to the outside of the hydrogen supply system. Even if the hydrogen circulation pump pumps the hydrogen mixed with water back into the anode through the anode inlet, it is not easy to cause the phenomenon of hydrogen deficiency during the operation of the fuel cell, or cause individual single cells in the fuel cell to be flooded with water, resulting in a decline in the performance of the fuel cell.

[0052] Among them, the method of adjusting the working parameters of the drain valve in the fuel cell based on the water to be discharged can be flexibly set as needed. For example, adjusting the opening frequency of the drain valve, adjusting the opening duty cycle of the drain valve, or adjusting the opening degree of the drain valve, etc., which are not limited herein.

[0053] See Figure 3 , Figure 3 is the flowchart of step S220 in an exemplary embodiment in the embodiment shown. As Figure 2 shown, the process of determining the instantaneous anode water content of the fuel cell anode according to the operating parameters may include steps S310 to S320, which are introduced in detail as follows: Figure 3 shown, the process of determining the instantaneous anode water content of the fuel cell anode according to the operating parameters may include steps S310 to S320, which are introduced in detail as follows:

[0054] In step S310, the recovered water at the anode inlet and the discharged water at the anode outlet are calculated according to the operating parameters.

[0055] In the embodiment of the present application, after obtaining the operating parameters of the current working condition of the fuel cell, the recovered water at the anode inlet and the discharged water at the anode outlet can be calculated according to the operating parameters. Among them, the recovered water represents the water flowing through the anode inlet within a monitoring duration, and the discharged water represents the water discharged from the anode outlet within a monitoring duration. In addition, the time range corresponding to the monitoring duration can be flexibly adjusted according to the requirements of different working conditions or determined by the continuous acquisition duration of the operating parameters, which are not limited herein.

[0056] Specifically, the calculation formula for calculating the recovered water at the anode inlet according to the operating parameters is:

[0057]

[0058] where, Q w,An,In is the recovered water at the anode inlet, N a is the molar number of the anode gas of the fuel cell, M is the molar mass of water, t is the continuous acquisition duration of the operating parameters or the monitoring duration corresponding to the current working condition, is the vapor pressure of saturated water vapor at the current temperature, and RH a is the relative humidity of the anode.

[0059] In addition, the calculation process of the molar number of the anode gas of the fuel cell can refer to the following calculation formula:

[0060]

[0061] where, ξ a is the excess coefficient of the anode reaction gas, j is the current density of the fuel cell, A is the effective reaction area of the fuel cell, and F is the Faraday constant.

[0062] The calculation process of the relative humidity of the anode can refer to the following calculation formula:

[0063]

[0064] Wherein, is the relative humidity corresponding to the hydrogen flowing through the anode row inlet, and T H2 is the temperature value corresponding to the hydrogen flowing through the anode row inlet, and P S T H2 is the air pressure corresponding to the saturated water vapor when the temperature value corresponding to the hydrogen is T H2 and P H2 is the pressure value corresponding to the hydrogen flowing through the anode row inlet.

[0065] Specifically, the calculation formula for the discharged moisture at the anode discharge port according to the operating parameters is:

[0066]

[0067] Wherein, Q va,An,Out is the discharged moisture at the anode discharge port.

[0068] In step S320, the instantaneous anode water content is determined based on the recovered moisture and the discharged moisture.

[0069] In the embodiment of the present application, after calculating the recovered moisture at the anode row inlet and the discharged moisture at the anode discharge port, the instantaneous anode water content can be determined based on the recovered moisture and the discharged moisture, that is, calculating the difference between the recovered moisture and the discharged moisture, and taking this difference as the instantaneous anode water content.

[0070] Refer to Figure 4 , Figure 4 which is a flowchart of a fuel cell drainage control method shown according to another exemplary embodiment. As Figure 4 shown, before step S320 in the embodiment shown in Figure 3 , the method may further include steps S410 to S420, which are introduced in detail as follows:

[0071] In step S410, the absorbed moisture in the gas diffusion layer in the anode is calculated according to the operating parameters.

[0072] It should be noted that in order to enable the hydrogen in the anode to react with the air in the cathode in the fuel cell, a gas diffusion layer for conducting gas is usually provided in both the anode and the cathode. The material for making the gas diffusion layer is usually carbon fiber paper, carbon fiber woven cloth, carbon black paper, etc., to conduct gas through the porous structure of its material characteristics. Correspondingly, the gas diffusion layer will also absorb the moisture in the anode and discharge it to the cathode.

[0073] In an embodiment of the present application, before determining the instantaneous anode water content based on the recovered water and the discharged water, the absorbed water in the gas diffusion layer of the anode can be further calculated according to the operating parameters, where the absorbed water represents the water that permeates from the recovered water into the gas diffusion layer.

[0074] Among them, the method of calculating the absorbed water in the gas diffusion layer of the anode according to the operating parameters can be flexibly set as needed. In one example, the instantaneous water content of the gas diffusion layer corresponding to the anode can be directly calculated according to the operating parameters, and then the instantaneous water content of the gas diffusion layer can be used as the absorbed water in the gas diffusion layer.

[0075] In another example, considering that water is generated during the process of hydrogen in the anode of the fuel cell being conducted through the gas diffusion layer of the anode to the membrane electrode to react with air, and during the period when this water is conducted to the cathode for discharge, it may reverse osmosis into the gas diffusion layer of the anode due to the influence of membrane pressure change and electroosmotic drag force.

[0076] Based on this, the present application can first calculate the water generated by the electrochemical reaction in the anode according to the operating parameters, where the water generated by the electrochemical reaction represents the water generated after the reaction of hydrogen and air under the current working conditions of the fuel cell, and then obtain the transfer coefficient corresponding to the gas diffusion layer, where the transfer coefficient represents the hydrophobic ability of the material of the current gas diffusion layer of the fuel cell. Finally, the absorbed water in the gas diffusion layer of the anode is calculated based on the water generated by the electrochemical reaction and the transfer coefficient, that is, after calculating the absorbed water in the gas diffusion layer of the anode, the water generated by the electrochemical reaction that reversely osmoses into the gas diffusion layer is further excluded, thereby improving the accuracy of the calculated absorbed water.

[0077] Specifically, the calculation method of calculating the water generated by the electrochemical reaction in the anode according to the operating parameters is:

[0078]

[0079] Among them, M w is the water generated by the electrochemical reaction, i ave is the average current density under the current working conditions of the fuel cell, and F is the Faraday constant.

[0080] In another example, it can also be further considered that after the recovered water at the anode inlet penetrates from one side of the gas diffusion layer of the anode, it does not directly flow out from the other side of the gas diffusion layer, that is, the water that penetrates into the gas diffusion layer will stay for a period of time.

[0081] Based on this, before calculating the absorbed moisture in the gas diffusion layer of the anode based on the water generated by the electrochemical reaction and the transfer coefficient, the present application can determine the residence time of the absorbed moisture based on the transfer coefficient, where the residence time represents the time duration from the absorbed moisture penetrating into one side of the gas diffusion layer to being discharged from the other side of the gas diffusion layer, and the residence time is related to the transfer coefficient corresponding to the gas diffusion layer for characterizing the hydrophobic ability, that is, the larger the transfer coefficient, the shorter the residence time. Then, calculate the absorbed moisture in the gas diffusion layer of the anode according to the residence time, the water generated by the electrochemical reaction, and the transfer coefficient, so as to further improve the accuracy of the calculated absorbed moisture.

[0082] Specifically, the calculation formula for calculating the absorbed moisture in the gas diffusion layer of the anode according to the residence time, the water generated by the electrochemical reaction, and the transfer coefficient is:

[0083]

[0084] where Q w,An,8 is the absorbed moisture in the gas diffusion layer of the anode, k drain is the transfer coefficient corresponding to the gas diffusion layer, β is the net water permeability coefficient, and T 8 is the residence time.

[0085] In step S420, determine the instantaneous anode water content based on the absorbed moisture, the recovered moisture, and the discharged moisture.

[0086] In the embodiment of the present application, after calculating the absorbed moisture, the instantaneous anode water content can be determined based on the absorbed moisture, the recovered moisture, and the discharged moisture. Specifically, the value obtained by subtracting the sum of the absorbed moisture and the discharged moisture from the recovered moisture is used as the instantaneous anode water content corresponding to the anode.

[0087] Through the above embodiment, when calculating the instantaneous anode water content corresponding to the anode, in addition to calculating the recovered moisture at the anode inlet and the discharged moisture at the anode outlet according to the operating parameters, it is also considered that the recovered moisture at the anode inlet can enter the gas diffusion layer in the anode and be discharged from the gas diffusion layer to the cathode. Therefore, further calculate the absorbed moisture in the gas diffusion layer of the anode according to the operating parameters, and then determine the instantaneous anode water content based on the absorbed moisture, the recovered moisture, and the discharged moisture, so as to improve the accuracy of the determined instantaneous anode water content.

[0088] See Figure 5 , Figure 5 which is a flowchart of a fuel cell drainage control method shown according to another exemplary embodiment. As Figure 5 shown, after step S140 in the embodiment shown in Figure 1 , the method may further include steps S510 to S530, which are introduced in detail as follows:

[0089] In step S510, obtain the minimum voltage value of a single cell in the fuel cell.

[0090] It should be noted that the output voltage of the fuel cell is related to the number of single cells in the fuel cell. That is to say, the fuel cell is formed by stacking multiple single cells in series.

[0091] Among them, the method for determining the minimum voltage value of a single cell in the fuel cell can be flexibly set according to needs. In one example, by obtaining the voltage values corresponding to each of the multiple single cells included in the fuel cell, and then determining the minimum voltage value from the voltage values corresponding to each of the multiple single cells, so as to use the determined minimum voltage value as the minimum voltage value of the single cell.

[0092] In another example, obtain the voltage values corresponding to each of the multiple single cells included in the fuel cell and start timing. After the timing duration reaches the preset duration, determine the minimum voltage value among the multiple single cells from the voltage change curves corresponding to the multiple single cells, so as to use the determined minimum voltage value among the multiple single cells as the minimum voltage value of the single cell, thereby avoiding the influence of the fluctuations generated during the output voltage process of the single cell on the accuracy of determining the minimum voltage value.

[0093] In step S520, determine the first correction coefficient of the drain valve according to the minimum voltage value and the preset minimum voltage value corresponding to the current working condition of the fuel cell.

[0094] It should be noted that during the operation of the fuel cell, if there is too much moisture in the anode corresponding to the current single cell, it is easy to cause flooding of the single cell, resulting in a significant drop in the output voltage of the single cell voltage.

[0095] In the implementation manner of the present application, after obtaining the minimum voltage value of a single cell in the fuel cell, the first correction coefficient of the drain valve can be determined according to the minimum voltage value and the preset minimum voltage value corresponding to the current working condition of the fuel cell.

[0096] Among them, the method for determining the first correction coefficient of the drain valve according to the minimum voltage value and the preset minimum voltage value corresponding to the current working condition of the fuel cell can be flexibly set according to needs. In one example, it can be determined whether the minimum voltage value is less than the preset minimum voltage value corresponding to the current working condition of the fuel cell. If the determination result is yes, it indicates that the minimum voltage value of the current single cell has caused the fuel cell to be unable to output the voltage value expected by the current working condition, and then the correction coefficient corresponding to the minimum voltage value is used as the first correction coefficient; on the contrary, if the determination result is no, it indicates that the voltage value output by the fuel cell can meet the voltage value expected by the current working condition, and then the correction coefficient corresponding to the preset minimum voltage value can be used as the first correction coefficient to avoid the drain valve from discharging hydrogen.

[0097] In addition, the lower the voltage value of a single cell in a fuel cell, the more serious the degree of water flooding of the single cell is characterized. Correspondingly, the correction coefficient corresponding to the voltage value characterizes the increase in the drainage volume of the drain valve.

[0098] In step S530, the operating parameters of the drain valve are adjusted according to the first correction coefficient.

[0099] In the embodiment of the present application, after determining the first correction coefficient of the drain valve, the operating parameters of the drain valve can be adjusted according to the first correction coefficient. After adjusting the operating parameters of the drain valve based on the discharged water, the operating parameters of the drain valve are further adjusted according to the situation corresponding to the minimum voltage value of the single cell voltage in the fuel cell, that is, the operating parameters of the drain valve are adjusted on the premise of ensuring that the drain valve is not likely to discharge hydrogen, so that the voltage values output by each single cell in the fuel cell meet the voltage values expected by the current working condition.

[0100] See Figure 6 , Figure 6 which is a flowchart of a fuel cell drainage control method shown according to another exemplary embodiment. As Figure 6 shown, after step S140 in the embodiment shown in Figure 1 , the method may further include steps S610 to S630, which are introduced in detail as follows:

[0101] In step S610, the pressure value of the anode in the fuel cell is obtained.

[0102] It should be noted that during the operation of the fuel cell, it is necessary for the hydrogen in the anode and the air in the cathode to react on both sides of the membrane electrode under a suitable pressure difference. If the pressure value in the anode is too high, it is likely to cause damage to the membrane electrode, while if the pressure value in the anode is too low, an under-hydrogen phenomenon may occur due to too low hydrogen delivery content, resulting in a decrease in the output power of the fuel cell.

[0103] Among them, in addition to directly obtaining the pressure value of the anode in the fuel cell, the method for determining the pressure value of the anode in the fuel cell can also start timing during the process of obtaining the pressure value of the anode in the fuel cell. When the timing duration reaches the preset duration, the minimum pressure value is determined from the pressure change curve of the anode, and the determined minimum pressure value is used as the pressure value of the anode, so as to avoid the influence of the fluctuations generated during the operation of the fuel cell on the accuracy of determining the pressure value of the anode.

[0104] In step S620, the second correction coefficient of the drain valve is determined according to the pressure value and the preset pressure value corresponding to the current working condition of the fuel cell.

[0105] In an embodiment of the present application, after obtaining the pressure value of the anode, the second correction coefficient of the drain valve can be determined according to the pressure value and the preset pressure value corresponding to the current working condition of the fuel cell, where the preset pressure value represents the minimum anode pressure value required for the fuel cell to meet the output power of the current working condition. That is to say, the preset pressure values corresponding to different working conditions of the fuel cell are all different.

[0106] Among them, the method for determining the second correction coefficient of the drain valve according to the pressure value and the preset pressure value corresponding to the current working condition of the fuel cell can be flexibly set as needed. In one example, it can be determined by judging whether the pressure value is less than the preset pressure value corresponding to the current working condition of the fuel cell. If the judgment result is yes, it means that the pressure value in the current anode has caused the fuel cell to be unable to meet the output power expected by the current working condition, and the correction coefficient corresponding to the pressure value of the anode is used as the second correction coefficient; on the contrary, if the judgment result is no, it means that the output power of the fuel cell can meet the output power expected by the current working condition, and the correction coefficient corresponding to the preset pressure value can be used as the second correction coefficient to further prevent the drain valve from discharging hydrogen.

[0107] In addition, the lower the pressure value of the anode in the fuel cell, the more serious the hydrogen leakage of the anode is. Correspondingly, the correction coefficient corresponding to this pressure value represents reducing the drainage volume of the drain valve.

[0108] In step S630, the working parameters of the drain valve are adjusted according to the second correction coefficient.

[0109] In an embodiment of the present application, after determining the second correction coefficient of the drain valve, the working parameters of the drain valve can be adjusted according to the second correction coefficient. After adjusting the working parameters of the drain valve in the fuel cell based on the discharged moisture, the working parameters of the drain valve are further adjusted according to the situation corresponding to the pressure value of the anode in the fuel cell, that is, the working parameters of the drain valve are adjusted on the premise of ensuring that the drain valve is not likely to discharge hydrogen, so that the pressure value of the anode in the fuel cell meets the operation of the fuel cell under the current working condition.

[0110] Figure 7 is a flowchart of a fuel cell drainage control method in an exemplary embodiment of the present application. As Figure 7 shown, the specific implementation method at least includes steps S701 to S713, which are introduced in detail as follows:

[0111] In step S701, the operating parameters of the fuel cell under the current working condition are obtained.

[0112] In step S702, the recovered moisture at the anode discharge port is calculated according to the operating parameters.

[0113] Among them, the recovered moisture represents the moisture flowing through the anode row inlet within a monitoring time period. Specifically, the calculation process of calculating the recovered moisture at the anode row inlet according to the operating parameters has been described in detail in the above step S310, and will not be elaborated here.

[0114] In step S703, the discharged moisture at the anode discharge port is calculated according to the operating parameters.

[0115] Among them, the discharged moisture represents the moisture discharged from the anode discharge port within a monitoring time period. The specific calculation process of calculating the discharged moisture at the anode discharge port according to the operating parameters is also described in detail in the above step S310, and will not be elaborated here.

[0116] In step S704, the absorbed moisture in the gas diffusion layer of the anode is calculated according to the operating parameters.

[0117] Among them, the absorbed moisture represents the moisture that the recovered moisture penetrates into the gas diffusion layer. In the embodiments of the present application, when calculating the absorbed moisture in the gas diffusion layer, the moisture generated by the electrochemical reaction in the anode can be calculated first according to the operating parameters, and then the transfer coefficient corresponding to the gas diffusion layer can be obtained to determine the moisture that is reverse osmosed from the moisture generated by the electrochemical reaction into the anode gas diffusion layer based on the transfer coefficient. At the same time, the residence time of the absorbed moisture is determined based on the transfer coefficient, and the calculated absorbed moisture is further corrected by the residence time to improve the accuracy of the calculated absorbed moisture.

[0118] In step S705, the instantaneous anode water content corresponding to the anode is determined based on the absorbed moisture, the recovered moisture, and the discharged moisture.

[0119] Among them, the instantaneous anode water content represents the moisture contained in the anode of the fuel cell operating under the current working condition.

[0120] In step S706, the moisture to be discharged from the anode of the fuel cell is determined based on the relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition.

[0121] Among them, the moisture to be discharged represents the excess moisture in the anode of the fuel cell.

[0122] In step S707, the operating parameters of the drain valve in the fuel cell are adjusted based on the moisture to be discharged.

[0123] For example, the current drainage volume of the drain valve is determined according to the pipe diameter of the drain valve and the pressure in the anode, and the operating parameters of the drain valve are adjusted based on the relationship between the drainage volume and the moisture to be discharged, that is, the opening frequency or opening duty ratio of the drain valve is adjusted, etc., so as to increase the drainage volume of the drain valve and discharge the moisture to be discharged through the drain valve.

[0124] After performing step S707, steps S708 to S710 can be further executed to correct the working parameters of the drain valve, and the specific content is as follows.

[0125] Step S708, obtain the minimum voltage value of a single cell in the fuel cell.

[0126] Step S709, determine the first correction coefficient of the drain valve according to the minimum voltage value and the preset minimum voltage value corresponding to the current working condition of the fuel cell.

[0127] Among them, the preset minimum voltage value represents the minimum voltage value expected for each single cell in the fuel cell under the current working condition.

[0128] Step S710, adjust the working parameters of the drain valve according to the first correction coefficient.

[0129] Adjust the working parameters of the drain valve through the first correction coefficient, that is, adjust the working parameters of the drain valve according to the situation corresponding to the minimum voltage value of the single cell voltage in the fuel cell, so as to adjust the working parameters of the drain valve on the premise of ensuring that the drain valve is not likely to discharge hydrogen, so that the voltage values output by each single cell in the fuel cell meet the voltage values expected by the current working condition.

[0130] After performing step S707, steps S711 to S713 can be further executed to correct the working parameters of the drain valve, and the specific content is as follows.

[0131] Step S711, obtain the pressure value of the anode in the fuel cell.

[0132] Step S712, determine the second correction coefficient of the drain valve according to the pressure value and the preset pressure value corresponding to the current working condition of the fuel cell.

[0133] Among them, the preset pressure value represents the pressure value of the anode expected by the fuel cell under the current working condition.

[0134] Step S713, adjust the working parameters of the drain valve according to the second correction coefficient.

[0135] Adjust the working parameters of the drain valve through the second correction coefficient, that is, adjust the working parameters of the drain valve according to the situation corresponding to the pressure value of the anode in the fuel cell, so as to adjust the working parameters of the drain valve on the premise of ensuring that the drain valve is not likely to discharge hydrogen, so that the pressure value of the anode in the fuel cell meets the operation of the fuel cell under the current working condition.

[0136] The following introduces the device embodiments of the present application, which can be used to execute the fuel cell drainage control method in the above embodiments of the present application. For the details not disclosed in the device embodiments of the present application, please refer to the embodiments of the fuel cell drainage control method above of the present application.

[0137] Figure 8 The block diagram of a fuel cell drainage control device 800 according to an embodiment of the present application is shown.

[0138] Referring to Figure 8 As shown, according to one aspect of the embodiments of the present application, a fuel cell drainage control device 800 is provided, including: an acquisition module 810 configured to acquire the operating parameters of the current working condition of the fuel cell; a first calculation module 820 configured to determine the instantaneous anode water content of the fuel cell anode according to the operating parameters; a second calculation module 830 configured to determine the water to be discharged from the fuel cell anode based on the relationship between the instantaneous anode water content and a preset anode water content threshold corresponding to the current working condition; and an adjustment module 840 configured to adjust the working parameters of the drainage valve in the fuel cell based on the water to be discharged.

[0139] In some embodiments of the present application, based on the foregoing solution, the first calculation module 820 is further configured to: in the process of determining the instantaneous anode water content of the fuel cell anode according to the operating parameters, calculate the recovered water at the anode inlet and the discharged water at the anode outlet according to the operating parameters; and determine the instantaneous anode water content based on the recovered water and the discharged water.

[0140] In some embodiments of the present application, based on the foregoing solution, the first calculation module 820 is further configured to: before determining the instantaneous anode water content based on the recovered water and the discharged water, calculate the absorbed water in the gas diffusion layer of the anode according to the operating parameters, where the absorbed water represents the water that penetrates from the recovered water into the gas diffusion layer; and determine the instantaneous anode water content based on the absorbed water, the recovered water, and the discharged water.

[0141] In some embodiments of the present application, based on the foregoing solution, the first calculation module 820 is further configured to: in the process of calculating the absorbed water in the gas diffusion layer of the anode according to the operating parameters, calculate the water generated by the electrochemical reaction in the anode according to the operating parameters; obtain the transfer coefficient corresponding to the gas diffusion layer; and calculate the absorbed water in the gas diffusion layer of the anode based on the water generated by the electrochemical reaction and the transfer coefficient.

[0142] In some embodiments of the present application, based on the foregoing solution, the first calculation module 820 is further configured to: before calculating the absorbed moisture in the gas diffusion layer of the anode based on the moisture generated by the electrochemical reaction and the transfer coefficient, determine the residence time of the absorbed moisture based on the transfer coefficient; the residence time represents the time duration from the absorbed moisture penetrating into one side of the gas diffusion layer to being discharged from the other side of the gas diffusion layer; calculate the absorbed moisture in the gas diffusion layer of the anode according to the residence time, the moisture generated by the electrochemical reaction, and the transfer coefficient.

[0143] In some embodiments of the present application, based on the foregoing solution, the adjustment module 840 is further configured to: after adjusting the operating parameters of the drain valve in the fuel cell based on the moisture to be discharged, obtain the minimum voltage value of a single cell in the fuel cell; determine the first correction coefficient of the drain valve according to the minimum voltage value and the preset minimum voltage value corresponding to the current operating condition of the fuel cell; adjust the operating parameters of the drain valve according to the first correction coefficient.

[0144] In some embodiments of the present application, based on the foregoing solution, the adjustment module 840 is further configured to: after adjusting the operating parameters of the drain valve in the fuel cell based on the moisture to be discharged, obtain the pressure value of the anode in the fuel cell; determine the second correction coefficient of the drain valve according to the pressure value and the preset pressure value corresponding to the current operating condition of the fuel cell; adjust the operating parameters of the drain valve according to the second correction coefficient.

[0145] It should be noted that the fuel cell drain control device 800 provided in the above embodiments and the fuel cell drain control method provided in the above embodiments belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiments and will not be elaborated here.

[0146] An embodiment of the present application further provides an electronic device, including a processor and a memory. Among them, computer-readable instructions are stored on the memory, and when the computer-readable instructions are executed by the processor, the fuel cell drain control method as described above is implemented.

[0147] Figure 9 The structural diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0148] It should be noted that Figure 9 The computer system 900 of the electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0149] As Figure 9As shown, computer system 900 includes a Central Processing Unit (CPU) 901, which can perform various appropriate actions and processes according to the program stored in the Read-Only Memory (ROM) 902 or the program loaded from the storage section 908 into the Random Access Memory (RAM) 903, such as executing the method described in the above embodiments. In the RAM 903, various programs and data required for system operation are also stored. The CPU 901, ROM 902, and RAM 903 are connected to each other via a bus 904. An Input / Output (I / O) interface 905 is also connected to the bus 904.

[0150] The following components are connected to the I / O interface 905: an input section 906 including a keyboard, a mouse, etc.; an output section 907 including, for example, a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), etc. and a speaker, etc.; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the I / O interface 905 as needed. A removable medium 911, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 910 as needed so that the computer program read from it can be installed into the storage section 908 as needed.

[0151] Specifically, according to the embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments of the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network via the communication section 909, and / or installed from the removable medium 911. When the computer program is executed by the Central Processing Unit (CPU) 901, various functions defined in the system of the present application are executed.

[0152] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0153] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code, and the above module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0154] The units involved in the embodiments described in this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the unit itself.

[0155] As another aspect, this application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may exist alone without being assembled into the electronic device. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed by an electronic device, the electronic device implements the method described in the above embodiments.

[0156] It should be noted that although several modules or units of a device for action execution are mentioned in the above detailed description, such a division is not mandatory. In fact, according to the embodiments of this application, the features and functions of the two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0157] Through the description of the above embodiments, those skilled in the art can easily understand that the example embodiments described herein can be implemented by software or by a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (such as a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of this application.

[0158] After considering the specification and practicing the embodiments disclosed herein, those skilled in the art will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application, which follow the general principles of this application and include known common knowledge or conventional technical means in the technical field not disclosed in this application.

[0159] It should be understood that this application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. A fuel cell drainage control method, characterized in that, the method includes: Obtain the operating parameters of the fuel cell under the current working condition; Determine the instantaneous anode water content of the anode of the fuel cell according to the operating parameters; Determine the water to be drained from the anode of the fuel cell based on the relationship between the instantaneous anode water content and the preset anode water content threshold corresponding to the current working condition; Adjust the working parameters of the drain valve in the fuel cell based on the water to be drained.

2. The method according to claim 1, characterized in that, The step of determining the instantaneous anode water content of the anode of the fuel cell according to the operating parameters includes: Calculate the recovered water at the anode inlet and the discharged water at the anode outlet according to the operating parameters; Determine the instantaneous anode water content based on the recovered water and the discharged water.

3. The method according to claim 2, characterized in that, Before determining the instantaneous anode water content based on the recovered water and the discharged water, the method further includes: Calculate the absorbed water in the gas diffusion layer in the anode according to the operating parameters, and the absorbed water represents the water permeating from the recovered water into the gas diffusion layer; Determine the instantaneous anode water content based on the absorbed water, the recovered water and the discharged water.

4. The method according to claim 3, characterized in that, The step of calculating the absorbed water in the gas diffusion layer in the anode according to the operating parameters includes: Calculate the water generated by the electrochemical reaction in the anode according to the operating parameters; Obtain the transfer coefficient corresponding to the gas diffusion layer; Calculate the absorbed water in the gas diffusion layer in the anode based on the water generated by the electrochemical reaction and the transfer coefficient.

5. The method according to claim 4, characterized in that, Before calculating the absorbed water in the gas diffusion layer in the anode based on the water generated by the electrochemical reaction and the transfer coefficient, the method further includes: Determine the residence time of the absorbed water based on the transfer coefficient; the residence time represents the time taken for the absorbed water permeating from one side of the gas diffusion layer to be discharged from the other side of the gas diffusion layer; Calculate the absorbed water in the gas diffusion layer in the anode according to the residence time, the water generated by the electrochemical reaction and the transfer coefficient.

6. The method according to claim 1, characterized in that, After adjusting the working parameters of the drain valve in the fuel cell based on the water to be drained, the method further includes: Obtain the minimum voltage value of a single cell in the fuel cell; Determine the first correction coefficient of the drain valve according to the minimum voltage value and the preset minimum voltage value corresponding to the current working condition of the fuel cell; Adjust the working parameters of the drain valve according to the first correction coefficient.

7. The method according to claim 1, characterized in that, After adjusting the working parameters of the drain valve in the fuel cell based on the water to be drained, the method further includes: Obtain the pressure value of the anode in the fuel cell; Determine a second correction coefficient of the drain valve according to the pressure value and a preset pressure value corresponding to the current working condition of the fuel cell; Adjust the working parameters of the drain valve according to the second correction coefficient.

8. A fuel cell drainage control device, characterized in that, comprising: an acquisition module configured to acquire operating parameters of the current working condition of the fuel cell; a first calculation module configured to determine an instantaneous anode water content of the anode of the fuel cell according to the operating parameters; a second calculation module configured to determine the water to be drained from the anode of the fuel cell based on the relationship between the instantaneous anode water content and a preset anode water content threshold corresponding to the current working condition; an adjustment module configured to adjust the working parameters of a drain valve in the fuel cell based on the water to be drained.

9. A computer-readable storage medium, characterized in that, computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of the computer, the computer is caused to execute the fuel cell drainage control method according to any one of claims 1-7.

10. An electronic device, characterized in that, comprising: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device is caused to implement the fuel cell drainage control method according to any one of claims 1 to 7.

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