Hydrogen path control method and device, and electronic equipment

Abstract

The application discloses a hydrogen path control method and device and electronic equipment. The nitrogen permeation rate and liquid water generation rate of the stack under the working current and hydrogen path temperature in the current fuel cell system are determined, the two rates are respectively compared with the nitrogen permeation rate and liquid water generation rate under the design hydrogen path or water path temperature, the ratio value is adjusted based on the ratio value, the discharge cycle of the system hydrogen discharge electromagnetic valve is adjusted, the adaptive adjustment of the discharge cycle in the system dynamic working condition is realized, the adaptability of the system to the dynamic operation working condition is improved, the hydrogen utilization rate of the system is improved by reducing the hydrogen discharge cycle under the design hydrogen path temperature, the system use economy is improved, and the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge is avoided.

Description

Technical Field

[0001] The present application relates to the field of fuel cells, and in particular to a hydrogen path control method, device, and electronic equipment. Background Art

[0002] The electrical energy output by a fuel cell is generated through an electrochemical reaction between hydrogen and oxygen. The only product of this reaction is environmentally friendly liquid water. The oxygen involved in the electrochemical reaction comes from the air. The nitrogen in the air that does not participate in the reaction, as well as the liquid water generated by the electrochemical reaction, will partially permeate from the air side of the stack to the hydrogen side. This nitrogen and liquid water will then be discharged when the hydrogen drain valve in the hydrogen path is opened.

[0003] At present, the hydrogen discharge cycle of the hydrogen circuit of the fuel cell system is usually calibrated based on working under a certain constant current condition. Then, considering the needs of dynamic operation of the system, the hydrogen discharge cycle calibrated based on the steady-state conditions will be shortened to prevent the stack from having reliability problems such as low cell voltage during operation due to untimely drainage of water or nitrogen from the hydrogen circuit.

[0004] However, the above method of shortening the steady-state hydrogen discharge period of the system will result in an increase in the amount of hydrogen discharged when the system operates at a steady-state operating point, reducing the hydrogen utilization rate of the system and thus reducing the economic efficiency of the system. Summary of the Invention

[0005] In view of this, the present application provides a hydrogen path control method, device and electronic equipment, the specific solutions of which are as follows:

[0006] A hydrogen path control method, comprising:

[0007] Obtaining a first nitrogen permeation rate and a first liquid water generation rate at a current operating current point in time and a set hydrogen path or water path temperature;

[0008] Determining a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature;

[0009] obtaining a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0010] The basic discharge cycle at the current working current moment obtained in advance and the set hydrogen path or water path temperature is adjusted according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path discharge cycle at the current moment.

[0011] Further, the adjustment of the pre-obtained basic emission period at the current working current time point and the set hydrogen path or water path temperature according to the first ratio relationship or the second ratio relationship comprises:

[0012] determining a maximum value in the first ratio relationship and the second ratio relationship;

[0013] performing a division of the pre-obtained basic emission period at the current working current time point and the set hydrogen path or water path temperature by the maximum value, and determining a value obtained by the division as an adjusted hydrogen path emission period at the current time.

[0014] Further, the obtaining of the first ratio relationship of the second nitrogen permeation rate and the first nitrogen permeation rate and the second ratio relationship of the second liquid water generation rate and the first liquid water generation rate comprises:

[0015] if the second nitrogen permeation rate is not less than the first nitrogen permeation rate, the first ratio relationship is a ratio of the second nitrogen permeation rate to the first nitrogen permeation rate; if the second nitrogen permeation rate is less than the first nitrogen permeation rate, the first ratio relationship is 1;

[0016] if the second liquid water generation rate is not less than the first liquid water generation rate, the second ratio relationship is a ratio of the second liquid water generation rate to the first liquid water generation rate; if the second liquid water generation rate is less than the first liquid water generation rate, the second ratio relationship is 1.

[0017] Further, the method further comprises:

[0018] determining an opening time of the hydrogen exhaust electromagnetic valve based on the adjusted hydrogen path emission period at the current time and a communication period of the controller, so that the hydrogen path is emitted at the opening time of the hydrogen exhaust electromagnetic valve.

[0019] Further, the obtaining of the first nitrogen permeation rate and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature comprises:

[0020] obtaining a nitrogen permeation rate value group at different working current time points and different hydrogen path or water path temperatures, and a liquid water generation rate value group at different working current time points and different hydrogen path or water path temperatures;

[0021] obtaining the first nitrogen permeation rate at the current working current time point and the set hydrogen path or water path temperature from the nitrogen permeation rate value group, and obtaining the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature from the liquid water generation rate value group.

[0022] Furthermore, determining the second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature includes:

[0023] Obtain the current hydrogen path temperature at the current working current moment;

[0024] Determining whether the current hydrogen path temperature is not less than a set hydrogen path temperature;

[0025] If it is determined that the current hydrogen path temperature is not less than the set hydrogen path temperature, determining that the second liquid water generation rate is the same as the first liquid water generation rate;

[0026] If it is determined that the current hydrogen path temperature is lower than the set hydrogen path temperature, the second liquid water generation rate is determined to be the sum of the first liquid water generation rate and the condensed water generation rate.

[0027] Furthermore, it also includes:

[0028] determining the condensed water generation rate;

[0029] Wherein, determining the condensed water generation rate includes:

[0030] Determine a first gaseous water volume at a design hydrogen path temperature and humidity, and a second gaseous water volume when the current hydrogen path temperature and humidity are 100%;

[0031] comparing the first gaseous water amount and the second gaseous water amount;

[0032] If it is determined that the second gaseous water amount is not less than the first gaseous water amount, then the condensed water generation rate is determined to be 0;

[0033] If it is determined that the second gaseous water amount is less than the first gaseous water amount, a difference obtained by subtracting the first gaseous water amount from the second gaseous water amount is determined as the condensed water generation rate.

[0034] A hydrogen path control device, comprising:

[0035] A first obtaining unit is used to obtain a first nitrogen permeation rate and a first liquid water generation rate at a current working current point in time and a set hydrogen path or water path temperature;

[0036] A first determining unit is used to determine a second nitrogen permeation rate and a second liquid water generation rate at a current operating current point in time and a current hydrogen path or water path temperature;

[0037] a second obtaining unit, configured to obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0038] The adjustment unit is used to adjust the pre-obtained current working current moment and the basic emission cycle at the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path emission cycle at the current moment.

[0039] An electronic device, comprising:

[0040] a processor configured to obtain a first nitrogen permeation rate and a first liquid water generation rate at a current operating current time point and a set hydrogen or water path temperature; determine a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen or water path temperature; obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate; and adjust a previously obtained basic discharge period at the current operating current time point and the set hydrogen or water path temperature based on the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point;

[0041] The memory is used to store the program for the processor to execute the above processing process.

[0042] A readable storage medium for storing at least one set of instructions;

[0043] The instruction set is used to be called and at least execute the method for controlling the hydrogen path as described in any one of the above items.

[0044] As can be seen from the above technical solutions, the hydrogen path control method, device, and electronic device disclosed in the present application obtain a first nitrogen permeation rate and a first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature, determine a second nitrogen permeation rate and a second liquid water generation rate at the current working current time point and the current hydrogen path or water path temperature, obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, and adjust the pre-obtained basic discharge period at the current working current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path discharge period at the current time point. This solution determines the nitrogen permeation rate and liquid water generation rate of the fuel cell stack under the operating current and hydrogen path temperature in the current fuel cell system, and calculates the ratio of the two rates to the nitrogen permeation rate and liquid water generation rate at the designed hydrogen path or water path temperature, thereby dynamically adjusting the discharge cycle of the system hydrogen discharge solenoid valve based on the ratio value, realizing adaptive adjustment of the discharge cycle under the dynamic working conditions of the system, improving the adaptability of the system to dynamic operating conditions, and by reducing the hydrogen discharge cycle under the design hydrogen path temperature conditions, it can improve the hydrogen utilization rate of the system, improve the economic efficiency of the system, and avoid the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 This is a flow chart of a hydrogen path control method disclosed in an embodiment of the present application;

[0047] Figure 2 A schematic structural diagram of a fuel cell system disclosed in an embodiment of the present application;

[0048] Figure 3 This is a flow chart of a hydrogen path control method disclosed in an embodiment of the present application;

[0049] Figure 4 This is a flow chart of a hydrogen path control method disclosed in an embodiment of the present application;

[0050] Figure 5 This is a flow chart of a hydrogen path control method disclosed in an embodiment of the present application;

[0051] Figure 6This is a structural schematic diagram of a hydrogen circuit control device disclosed in an embodiment of the present application;

[0052] Figure 7 This is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only 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.

[0054] This application discloses a hydrogen path control method, the flow chart of which is as follows: Figure 1 Shown, including:

[0055] Step S11, obtaining a first nitrogen permeation rate and a first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature;

[0056] Step S12: determining a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature;

[0057] Step S13, obtaining a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0058] Step S14: adjusting the pre-obtained basic discharge cycle at the current working current moment and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path discharge cycle at the current moment.

[0059] When the fuel cell system generates electricity through the electrochemical reaction of hydrogen and oxygen, it needs to discharge the nitrogen and water in the system. The nitrogen and water that penetrate into the system's hydrogen path will be discharged as the hydrogen path hydrogen discharge valve is opened.

[0060] At present, the voltage status of the fuel cell cells and the power changes of the hydrogen circulation pump can be used to indirectly judge whether the hydrogen path of the fuel cell stack is blocked by water. If the cell voltage is abnormal or the power of the hydrogen circulation pump is too large, it is considered that the hydrogen path of the fuel cell stack is blocked by water and hydrogen is discharged. This method is prone to misjudgment of water blockage, resulting in unnecessary hydrogen discharge. In addition, the system hydrogen discharge cycle can be increased or decreased according to the system power operating status. This only considers the system power status, but does not consider the temperature or other parameters during the system operation process. Therefore, the hydrogen discharge cycle is not accurate.

[0061] Based on this, the present invention discloses a hydrogen path control method, which calculates the ratio of the nitrogen permeation rate and the liquid water generation rate relative to the set hydrogen path temperature or the set water path temperature through the system's current hydrogen path temperature or the water path temperature, so as to dynamically adjust the system's hydrogen path discharge cycle according to the ratio relationship, thereby improving the fuel cell system's adaptability to dynamic operating conditions, reducing unnecessary hydrogen discharge, and improving hydrogen utilization during system operation.

[0062] Specifically, first determine the first nitrogen permeation rate and the first liquid water generation rate at the current working current point in time and the set hydrogen path or water path temperature, that is, the liquid water generation rate at the set hydrogen path temperature and the current working current, that is, the theoretical liquid water generation rate value, and the nitrogen permeation rate at the set water path temperature and the current working current, that is, the theoretical nitrogen permeation rate value.

[0063] In addition, it is also necessary to obtain a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point and the current hydrogen path or water path temperature, that is, the liquid water generation rate at the same operating current as the theoretical liquid water generation rate value and the current actual hydrogen path temperature, that is, the actual liquid water generation rate value, and the nitrogen permeation rate at the same operating current as the theoretical nitrogen permeation rate and the current actual water path temperature, that is, the actual nitrogen permeation rate value.

[0064] The actual nitrogen permeation rate is compared with the theoretical nitrogen permeation rate, that is, the second nitrogen permeation rate is compared with the first nitrogen permeation rate, to obtain a first ratio relationship; at the same time, the actual liquid water generation rate is compared with the theoretical liquid water generation rate, that is, the second liquid water generation rate is compared with the first liquid water generation rate, to obtain a second ratio relationship.

[0065] The basic emission cycle is adjusted according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path emission cycle at the current moment, so that the fuel cell system can discharge the gas or water in the hydrogen path based on the obtained hydrogen path emission cycle at the current moment, thereby achieving the purpose of dynamically adjusting the hydrogen path emission cycle.

[0066] Among them, the basic emission cycle is predetermined, and the basic emission cycle at the working current point in time can be calibrated according to the hydrogen path nitrogen concentration required by the stack design under the current current and the maximum liquid water level allowed in the water separator.

[0067] When the fuel cell system operates at different current densities, the stack will have different nitrogen concentration requirements for the hydrogen path. The higher the nitrogen concentration in the stack hydrogen path, the worse the stack performance and the lower the stack efficiency. However, increasing the hydrogen discharge frequency will cause more hydrogen to be discharged from the system, thereby reducing the efficiency of the fuel cell system. Therefore, a dynamic hydrogen discharge method is needed to minimize the hydrogen discharge frequency when the system operates under steady-state conditions while meeting certain nitrogen concentration requirements.

[0068] The basic emission cycle is adjusted based on the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path emission cycle at the current moment, that is, the hydrogen path emission cycle is adjusted based on the ratio relationship of the nitrogen permeation rate or the ratio relationship of the liquid water generation rate. In fact, the nitrogen permeation rate or the liquid water generation rate is used as a reference parameter for adjusting the hydrogen path emission cycle to achieve adaptive adjustment of the hydrogen path emission cycle and avoid the problem of low hydrogen utilization rate due to frequent emissions.

[0069] Specifically, the structural diagram of the fuel cell system disclosed in this embodiment is as follows Figure 2 As shown, it includes: fuel cell, air compressor, intercooler, back pressure valve, radiator, water cooling pump, thermostat, water inlet temperature sensor T2, water tank, hydrogen path temperature sensor T1, anode water separator, hydrogen exhaust solenoid valve, hydrogen circulation pump, hydrogen inlet solenoid valve and system controller (the system controller is not shown in the figure). Figure 2 (The winning bid is out).

[0070] Among them, the hydrogen discharge solenoid valve is used to discharge nitrogen or liquid water in the system's hydrogen path; the hydrogen path temperature sensor is used to monitor the system's hydrogen path temperature, so that the subsequent system can calculate or find the nitrogen permeation rate and liquid water generation rate at the current moment based on the temperature; the system controller is used to control the opening or closing of the hydrogen discharge solenoid valve, collect the sensor temperature, and calculate the system discharge cycle at the current moment in real time.

[0071] This scheme is based on the fact that, when the system's hydrogen circuit operating conditions remain unchanged before and after the implementation of this control method, changes in water circuit temperature can cause changes in the nitrogen permeation rate from the air circuit to the hydrogen circuit, and condense gaseous water in the hydrogen circuit due to changes in water circuit temperature. Therefore, by calculating or calibrating the nitrogen permeation rate and liquid water generation rate at the system's current operating current and hydrogen circuit or water circuit temperature, and then comparing them to the actual nitrogen permeation rate and liquid water generation rate at the same operating current, the base emission cycle is adjusted to achieve dynamic changes in the hydrogen circuit emission cycle as the nitrogen permeation rate or liquid water generation rate changes.

[0072] The hydrogen path control method disclosed in this embodiment obtains a first nitrogen permeation rate and a first liquid water generation rate at the current operating current time point and a set hydrogen path or water path temperature, determines a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen path or water path temperature, obtains a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, and adjusts a previously obtained basic discharge period at the current operating current time point and the set hydrogen path or water path temperature based on the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point. This solution determines the nitrogen permeation rate and liquid water generation rate of the fuel cell stack under the operating current and hydrogen path temperature in the current fuel cell system, calculates the ratio of the two rates to the nitrogen permeation rate and liquid water generation rate under the design hydrogen path or water path temperature, and adjusts the discharge cycle of the system hydrogen discharge solenoid valve based on the ratio value, thereby achieving adaptive adjustment of the discharge cycle under the dynamic operating conditions of the system, improving the system's adaptability to dynamic operating conditions, and by reducing the hydrogen discharge cycle under the design hydrogen path temperature conditions, it can improve the system's hydrogen utilization rate, enhance the system's economic efficiency, and avoid the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge.

[0073] This embodiment discloses a hydrogen path control method, the flow chart of which is as follows: Figure 3 Shown, including:

[0074] Step S31, obtaining a first nitrogen permeation rate and a first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature;

[0075] Step S32: determining a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature;

[0076] Step S33, obtaining a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0077] Step S34: determining the maximum value between the first ratio relationship and the second ratio relationship;

[0078] Step S35: Divide the basic discharge cycle at the current working current moment and the set hydrogen path or water path temperature obtained in advance by the maximum value, and determine the obtained value as the adjusted hydrogen path discharge cycle at the current moment.

[0079] When adjusting the pre-obtained basic emission period according to the first ratio relationship or the second ratio relationship, the basic emission period may be adjusted according to the first ratio relationship or according to the second ratio relationship.

[0080] The selection of the first ratio relationship or the second ratio relationship can be directly determined based on the size of the first ratio relationship and the second ratio relationship, that is, the maximum value of the first ratio relationship and the second ratio relationship can be directly selected, and the basic emission period can be adjusted based on the maximum value of the two ratio relationships. As for the minimum value of the two ratio relationships, since it has been adjusted based on the larger ratio relationship, there is no need to consider the smaller ratio relationship. The smaller ratio relationship can be directly discarded when adjusting the basic emission period.

[0081] For example, if the first ratio relationship is greater than the second ratio relationship, the basic discharge period can be adjusted directly based on the first ratio relationship, that is, the basic discharge period is adjusted only based on the nitrogen permeation rate without considering the liquid water generation rate; if the second ratio relationship is greater than the first ratio relationship, the basic discharge period can be adjusted directly based on the second ratio relationship, that is, the basic discharge period is adjusted only based on the liquid water generation rate without considering the nitrogen permeation rate.

[0082] The basic emission cycle is adjusted based on the maximum value of the two ratio relationships to obtain the adjusted hydrogen path emission cycle at the current moment. Specifically, the basic emission cycle is divided by the maximum value of the two ratio relationships, and the quotient obtained by the division is determined as the adjusted hydrogen path emission cycle at the current moment.

[0083] Furthermore, the first ratio relationship and the second ratio relationship may be obtained as follows:

[0084] If the second nitrogen permeation rate is not less than the first nitrogen permeation rate, the first ratio relationship is the ratio of the second nitrogen permeation rate to the first nitrogen permeation rate; if the second nitrogen permeation rate is less than the first nitrogen permeation rate, the first ratio relationship is 1;

[0085] If the second liquid water generation rate is not less than the first liquid water generation rate, the second ratio relationship is the ratio of the second liquid water generation rate to the first liquid water generation rate; if the second liquid water generation rate is less than the first liquid water generation rate, the second ratio relationship is 1.

[0086] That is, the first ratio relationship is determined based on the magnitude of the actual nitrogen permeation rate and the theoretical nitrogen permeation rate, and the second ratio relationship is determined based on the magnitude of the actual liquid water generation rate and the theoretical liquid water generation rate.

[0087] If the actual nitrogen permeation rate is less than the theoretical nitrogen permeation rate, and the actual liquid water generation rate is less than the theoretical liquid water generation rate, both the first ratio relationship and the second ratio relationship are 1, at this time, the current hydrogen path discharge period is the same as the basic discharge period, and the basic discharge period does not need to be adjusted;

[0088] If the actual nitrogen permeation rate is greater than the theoretical nitrogen permeation rate, the first ratio relationship is a value greater than 1; if the actual liquid water generation rate is less than the theoretical liquid water generation rate at this time, the second ratio relationship is 1, at this time, the current hydrogen path discharge period needs to be divided by the first ratio relationship on the basis of the basic discharge period, so that the adjusted hydrogen path discharge period is less than the basic discharge period;

[0089] If the actual nitrogen permeation rate is less than the theoretical nitrogen permeation rate, the first ratio relationship is 1, and the actual liquid water generation rate is greater than the theoretical liquid water generation rate, the second ratio relationship is a value greater than 1, at this time, the current hydrogen path discharge period needs to be divided by the second ratio relationship on the basis of the basic discharge period, so that the adjusted hydrogen path discharge period is less than the basic discharge period;

[0090] If the actual nitrogen permeation rate is greater than the theoretical nitrogen permeation rate, and the actual liquid water generation rate is greater than the theoretical liquid water generation rate, both the first ratio relationship and the second ratio relationship are greater than 1, at this time, it is necessary to further compare the size of the first ratio relationship and the second ratio relationship, if the first ratio relationship is greater than the second ratio relationship, the current hydrogen path discharge period needs to be divided by the first ratio relationship on the basis of the basic discharge period; if the second ratio relationship is greater than the first ratio relationship, the current hydrogen path discharge period needs to be divided by the second ratio relationship on the basis of the basic discharge period.

[0091] The hydrogen path control method disclosed in the embodiment obtains the first nitrogen permeation rate and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature, determines the second nitrogen permeation rate and the second liquid water generation rate at the current working current time point and the current hydrogen path or water path temperature, obtains the first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and the second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, adjusts the basic emission period obtained in advance at the current working current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship, and obtains the adjusted hydrogen path emission period at the current time point. The scheme determines the nitrogen permeation rate and the liquid water generation rate of the stack at the working current and the hydrogen path temperature in the current fuel cell system, respectively calculates the ratio of the two rates to the nitrogen permeation rate and the liquid water generation rate at the designed hydrogen path or water path temperature, and adjusts the emission period of the hydrogen emission electromagnetic valve based on the ratio value, realizes the adaptive adjustment of the emission period in the dynamic working condition of the system, improves the adaptability of the system to the dynamic working condition, reduces the hydrogen emission period at the designed hydrogen path temperature, improves the hydrogen utilization rate of the system, improves the economic efficiency of the system, and avoids the problem of low hydrogen utilization rate caused by unnecessary hydrogen emission.

[0092] The hydrogen path control method disclosed in the embodiment has a flow chart as shown in Figure 4 The hydrogen path control method disclosed in the embodiment has a flow chart as shown in

[0093] Step S41, obtaining the first nitrogen permeation rate and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature;

[0094] Step S42, determining the second nitrogen permeation rate and the second liquid water generation rate at the current working time point and the current hydrogen path or water path temperature;

[0095] Step S43, obtaining the first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and the second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0096] Step S44, adjusting the basic emission period obtained in advance at the current working current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship, and obtaining the adjusted hydrogen path emission period at the current time point;

[0097] Step S45, determining the cumulative integral of the hydrogen emission period based on the adjusted hydrogen path emission period at the current time point and the communication period of the controller, and opening the hydrogen emission electromagnetic valve to emit the hydrogen path when the cumulative integral reaches the preset value.

[0098] After adjusting the discharge period of the hydrogen path, the discharge period of the hydrogen path needs to be monitored to determine the opening or closing of the hydrogen discharge electromagnetic valve. Moreover, since the working current and the temperature of the hydrogen path or the water path change at each moment during the operation of the system, the discharge period of the system at each moment is different, and thus the discharge period of the hydrogen path needs to be integrated in real time to determine the opening moment of the hydrogen discharge electromagnetic valve.

[0099] Since the working current and the temperature of the hydrogen path change at each moment during the operation of the system, the discharge period of the system at each moment is different, and thus the discharge period needs to be calculated to determine the opening moment of the hydrogen discharge electromagnetic valve.

[0100] Specifically, F=0 can be set, and the following formula is executed in a loop:

[0101] F=F+1 / T1*t0

[0102] The above cumulative calculation is performed to obtain the cumulative integral F of the hydrogen discharge period. When F=1, the loop process is exited, and the step of opening the hydrogen discharge electromagnetic valve in a unit time is executed, that is, when F=1, the hydrogen discharge electromagnetic valve is controlled to be opened, then F=0 is set, and the above loop is repeatedly executed.

[0103] Wherein, T1 is the discharge period of the hydrogen path at the current moment, and t0 is the communication period of the controller.

[0104] Wherein, the discharge period of the hydrogen path is the time interval between two openings of the hydrogen discharge electromagnetic valve.

[0105] The hydrogen path control method disclosed in the embodiment obtains the first nitrogen permeation rate and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature, determines the second nitrogen permeation rate and the second liquid water generation rate at the current working current time point and the current hydrogen path or water path temperature, obtains the first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and the second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, adjusts the basic emission period obtained in advance at the current working current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship, and obtains the adjusted hydrogen path emission period at the current time point. The scheme determines the nitrogen permeation rate and the liquid water generation rate of the stack at the working current and the hydrogen path temperature in the current fuel cell system, respectively calculates the ratio of the two rates to the nitrogen permeation rate and the liquid water generation rate at the designed hydrogen path or water path temperature, and adjusts the emission period of the system hydrogen emission electromagnetic valve based on the ratio value, realizes the adaptive adjustment of the emission period in the dynamic working condition of the system, improves the adaptability of the system to the dynamic operating condition, reduces the hydrogen emission period at the designed hydrogen path temperature, improves the hydrogen utilization rate of the system, improves the economic efficiency of the system, and avoids the problem of low hydrogen utilization rate caused by unnecessary hydrogen emission.

[0106] The hydrogen path control method disclosed in the embodiment has a flow chart as shown in Figure 5 The hydrogen path control method disclosed in the embodiment has a flow chart as shown in

[0107] Step S51, obtaining the first nitrogen permeation rate and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature;

[0108] Step S52, obtaining the current hydrogen path temperature at the current working current time point, and determining whether the current hydrogen path temperature is not less than the set hydrogen path temperature;

[0109] Step S53, if it is determined that the current hydrogen path temperature is not less than the set hydrogen path temperature, determining that the second liquid water generation rate is the same as the first liquid water generation rate;

[0110] Step S54, if it is determined that the current hydrogen path temperature is less than the set hydrogen path temperature, determining that the second liquid water generation rate is the sum of the first liquid water generation rate and the condensate water generation rate;

[0111] Step S55, determining the second nitrogen permeation rate at the current working current time point and the current water temperature;

[0112] Step S56, obtaining the first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and the second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0113] Step S57, adjusting the pre-obtained current working current time point and the basic emission period at the set hydrogen path or water path temperature according to the first ratio relationship or the second ratio relationship, to obtain the adjusted hydrogen path emission period at the current time.

[0114] The first liquid water generation rate and the first nitrogen permeation rate are obtained by querying the pre-obtained table, and the second liquid water generation rate and the second nitrogen permeation rate are obtained by calculation.

[0115] Specifically, a nitrogen permeation rate value group at different working current time points and different hydrogen path or water path temperatures, and a liquid water generation rate value group at different working current time points and different hydrogen path or water path temperatures are obtained; the first nitrogen permeation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the nitrogen permeation rate value group, and the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the liquid water generation rate value group.

[0116] The fuel cell system works at a certain steady-state working current point and a certain hydrogen path or water path temperature state, and according to the hydrogen cavity nitrogen concentration required by the stack design at the current and the highest liquid water level allowed in the water distributor, the basic emission period of the working point is calibrated, and the nitrogen permeation rate and the liquid water generation rate of the system at the working point are recorded; the control system is operated at different working current points and different hydrogen path or water path temperatures, and the above steps are repeated to obtain the liquid water generation rate value group, the nitrogen permeation rate value group, and the basic emission period value group.

[0117] The above value groups are sorted to obtain the current and basic emission period relationship curve of the system at different hydrogen path temperatures, the current and nitrogen permeation rate relationship curve, and the current and liquid water generation rate relationship curve.

[0118] Then, if the first nitrogen permeation rate at the current working current time point and the set hydrogen path or water path temperature is to be determined, it can be obtained directly by searching the nitrogen permeation rate value group, or the first nitrogen permeation rate can be determined through the current and nitrogen permeation rate relationship curve; similarly, if the first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature is to be determined, it can be obtained directly by searching the liquid water generation rate value group, or it can be obtained through the current and liquid water generation rate relationship curve, and similarly, the basic emission period at the current state can be determined through the current and basic emission period relationship curve.

[0119] In addition, to determine the second nitrogen permeation rate at the current working current time point and the current hydrogen path or water path temperature, the water path temperature of the system can be determined, that is,

[0120] W_N = f(T_sta)

[0121] Wherein, W_N is the second nitrogen permeation rate, T_sta is the water temperature of the system.

[0122] And for the second liquid water generation rate, can be determined by calculation, specifically: can be determined by comparing the current hydrogen path temperature and the size of the set hydrogen path temperature, if the current hydrogen path temperature is not less than the set hydrogen path temperature, the first liquid water generation rate can be determined as the second liquid water generation rate, that is, in the current hydrogen path temperature is greater than or equal to the set hydrogen path temperature, the second liquid water generation rate is the same as the first liquid water generation rate; And if the current hydrogen path temperature is less than the set hydrogen path temperature, the condensate water generation rate needs to be considered, that is, the sum of the first liquid water generation rate and the condensate water generation rate is determined as the second liquid water generation rate.

[0123] That is, the temperature of the hydrogen path will affect the water generation rate, for example: in a closed space, there is a certain temperature and humidity is 100% of the air, if the temperature in the closed space is reduced, the humidity in the space will be saturated and condensed to generate liquid water. That is, when the hydrogen path temperature is low, there will be condensate water generation, so when determining the actual liquid water generation rate, the factor of condensate water generation needs to be increased.

[0124] Wherein, the condensate water generation rate can be determined as:

[0125] Determine the first gaseous water amount under the design temperature and humidity of the hydrogen path, and the second gaseous water amount under the current hydrogen path temperature and humidity of 100%; compare the first gaseous water amount and the second gaseous water amount, if it is determined that the second gaseous water amount is not less than the first gaseous water amount, the condensate water generation rate is determined as 0; if it is determined that the second gaseous water amount is less than the first gaseous water amount, the difference obtained by subtracting the first gaseous water amount from the second gaseous water amount is determined as the condensate water generation rate.

[0126] That is, when the gaseous water amount under the current hydrogen path temperature and humidity of 100% is greater than or equal to the gaseous water amount under the design temperature and humidity of the hydrogen path, there is no need to consider the condensate water generation rate. Only when the gaseous water amount under the current hydrogen path temperature and humidity of 100% is less than the gaseous water amount under the design temperature and humidity of the hydrogen path, the reference factor of condensate water generation is increased. At this time, the difference obtained by subtracting the gaseous water amount under the current hydrogen path temperature and humidity of 100% from the gaseous water amount under the design temperature and humidity of the hydrogen path is determined as the condensate water generation rate.

[0127] After determining the condensate water generation rate, the second liquid water generation rate is determined based on the condensate water generation rate.

[0128] Further, the first gaseous water amount can be:

[0129] M_design = [saturated vapor pressure at design temperature * hydrogen line humidity / (101 + stack hydrogen inlet pressure - saturated vapor pressure at design temperature * hydrogen line humidity)] * hydrogen line circulation flow rate;

[0130] M_current = [saturated vapor pressure at current temperature*100% / (101+fuel cell hydrogen inlet pressure-saturated vapor pressure at current temperature*100%)]*hydrogen circuit circulation flow rate.

[0131] Among them, M_design is: the first gaseous water volume at the design temperature and humidity of the hydrogen path; M_current is: the second gaseous water volume when the current hydrogen path temperature and humidity are 100%.

[0132] The hydrogen path control method disclosed in this embodiment obtains a first nitrogen permeation rate and a first liquid water generation rate at the current operating current time point and a set hydrogen path or water path temperature, determines a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen path or water path temperature, obtains a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, and adjusts a previously obtained basic discharge period at the current operating current time point and the set hydrogen path or water path temperature based on the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point. This solution determines the nitrogen permeation rate and liquid water generation rate of the fuel cell stack under the operating current and hydrogen path temperature in the current fuel cell system, calculates the ratio of the two rates to the nitrogen permeation rate and liquid water generation rate under the design hydrogen path or water path temperature, and adjusts the discharge cycle of the system hydrogen discharge solenoid valve based on the ratio value, thereby achieving adaptive adjustment of the discharge cycle under the dynamic operating conditions of the system, improving the system's adaptability to dynamic operating conditions, and by reducing the hydrogen discharge cycle under the design hydrogen path temperature conditions, it can improve the system's hydrogen utilization rate, enhance the system's economic efficiency, and avoid the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge.

[0133] This embodiment discloses a hydrogen path control device, the structural diagram of which is shown in FIG. Figure 6 Shown, including:

[0134] A first obtaining unit 61 , a first determining unit 62 , a second obtaining unit 63 and an adjusting unit 64 .

[0135] The first obtaining unit 61 is used to obtain a first nitrogen permeation rate and a first liquid water generation rate at the current working current moment and the set hydrogen path or water path temperature;

[0136] The first determining unit 62 is used to determine a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature;

[0137] The second obtaining unit 63 is used to obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate;

[0138] The adjustment unit 64 is used to adjust the pre-obtained basic emission cycle at the current working current moment and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship to obtain the adjusted hydrogen path emission cycle at the current moment.

[0139] Furthermore, the adjustment unit is used to:

[0140] Determine the maximum value between the first ratio relationship and the second ratio relationship; divide the basic emission cycle at the current working current moment and the set hydrogen path or water path temperature obtained in advance by the maximum value, and determine the obtained value as the adjusted hydrogen path emission cycle at the current moment.

[0141] Furthermore, the second obtaining unit is used for:

[0142] If the second nitrogen permeation rate is not less than the first nitrogen permeation rate, the first ratio relationship is the ratio of the second nitrogen permeation rate to the first nitrogen permeation rate; if the second nitrogen permeation rate is less than the first nitrogen permeation rate, the first ratio relationship is 1; if the second liquid water generation rate is not less than the first liquid water generation rate, the second ratio relationship is the ratio of the second liquid water generation rate to the first liquid water generation rate; if the second liquid water generation rate is less than the first liquid water generation rate, the second ratio relationship is 1.

[0143] Furthermore, the hydrogen path control device disclosed in this embodiment may further include:

[0144] The second determining unit is configured to determine the opening time of the hydrogen discharge solenoid valve based on the adjusted current hydrogen discharge cycle and the communication cycle of the controller, so as to discharge the hydrogen path at the opening time of the hydrogen discharge solenoid valve.

[0145] Furthermore, the first obtaining unit is used for:

[0146] A nitrogen permeation rate value group at different working current time points and different hydrogen path or water path temperatures, and a liquid water generation rate value group at different working current time points and different hydrogen path or water path temperatures are obtained; a first nitrogen permeation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the nitrogen permeation rate value group, and a first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the liquid water generation rate value group.

[0147] Furthermore, the first determining unit is configured to:

[0148] Obtaining a current hydrogen path temperature at a current operating current moment; determining whether the current hydrogen path temperature is not less than a set hydrogen path temperature; if it is determined that the current hydrogen path temperature is not less than the set hydrogen path temperature, determining that the second liquid water generation rate is the same as the first liquid water generation rate; if it is determined that the current hydrogen path temperature is less than the set hydrogen path temperature, determining that the second liquid water generation rate is the sum of the first liquid water generation rate and the condensed water generation rate.

[0149] Furthermore, the first determining unit is further configured to: determine a condensed water generation rate;

[0150] The condensate generation rate is determined, including:

[0151] Determine a first gaseous water volume at a design hydrogen path temperature and humidity, and a second gaseous water volume when the current hydrogen path temperature and humidity are 100%;

[0152] comparing the first gaseous water volume and the second gaseous water volume;

[0153] If it is determined that the second gaseous water amount is not less than the first gaseous water amount, the condensed water generation rate is determined to be 0;

[0154] If it is determined that the second gaseous water amount is less than the first gaseous water amount, the difference obtained by subtracting the first gaseous water amount from the second gaseous water amount is determined as the condensed water generation rate.

[0155] The hydrogen path control device disclosed in this embodiment is implemented based on the hydrogen path control method disclosed in the above embodiment, and will not be described in detail here.

[0156] The hydrogen path control device disclosed in this embodiment obtains a first nitrogen permeation rate and a first liquid water generation rate at the current operating current time point and a set hydrogen path or water path temperature, determines a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen path or water path temperature, obtains a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, and adjusts a previously obtained basic discharge period at the current operating current time point and the set hydrogen path or water path temperature based on the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point. This solution determines the nitrogen permeation rate and liquid water generation rate of the fuel cell stack under the operating current and hydrogen path temperature in the current fuel cell system, calculates the ratio of the two rates to the nitrogen permeation rate and liquid water generation rate under the design hydrogen path or water path temperature, and adjusts the discharge cycle of the system hydrogen discharge solenoid valve based on the ratio value, thereby achieving adaptive adjustment of the discharge cycle under the dynamic operating conditions of the system, improving the system's adaptability to dynamic operating conditions, and by reducing the hydrogen discharge cycle under the design hydrogen path temperature conditions, it can improve the system's hydrogen utilization rate, enhance the system's economic efficiency, and avoid the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge.

[0157] This embodiment discloses an electronic device, the structural diagram of which is shown in FIG. Figure 7 Shown, including:

[0158] Processor 71 and memory 72.

[0159] The processor 71 is configured to obtain a first nitrogen permeation rate and a first liquid water generation rate at a current operating current time point and a set hydrogen or water path temperature; determine a second nitrogen permeation rate and a second liquid water generation rate at a current operating current time point and a current hydrogen or water path temperature; obtain a first ratio between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio between the second liquid water generation rate and the first liquid water generation rate; and adjust a previously obtained basic discharge period at the current operating current time point and the set hydrogen or water path temperature based on the first ratio or the second ratio to obtain an adjusted hydrogen path discharge period at the current time point.

[0160] The memory 72 is used to store the program for the processor to execute the above-mentioned processing.

[0161] The electronic device disclosed in this embodiment is implemented based on the hydrogen path control method disclosed in the above embodiment, which will not be described in detail here.

[0162] The electronic device disclosed in this embodiment obtains a first nitrogen permeation rate and a first liquid water generation rate at a current operating current time point and a set hydrogen path or water path temperature, determines a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen path or water path temperature, obtains a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate, and adjusts a previously obtained basic discharge period at the current operating current time point and the set hydrogen path or water path temperature based on the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point. This solution determines the nitrogen permeation rate and liquid water generation rate of the fuel cell stack under the operating current and hydrogen path temperature in the current fuel cell system, calculates the ratio of the two rates to the nitrogen permeation rate and liquid water generation rate under the design hydrogen path or water path temperature, and adjusts the discharge cycle of the system hydrogen discharge solenoid valve based on the ratio value, thereby achieving adaptive adjustment of the discharge cycle under the dynamic operating conditions of the system, improving the system's adaptability to dynamic operating conditions, and by reducing the hydrogen discharge cycle under the design hydrogen path temperature conditions, it can improve the system's hydrogen utilization rate, enhance the system's economic efficiency, and avoid the problem of low hydrogen utilization rate caused by unnecessary hydrogen discharge.

[0163] An embodiment of the present application further provides a readable storage medium on which a computer program is stored. The computer program is loaded and executed by a processor to implement the various steps of the above-mentioned hydrogen path control method. The specific implementation process can refer to the description of the corresponding part of the above-mentioned embodiment, which will not be repeated in this embodiment.

[0164] This application also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the methods provided in the various optional implementations of the aforementioned hydrogen path control method or hydrogen path control device. The specific implementation process can be referred to the description of the corresponding embodiments above and is not repeated here.

[0165] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0166] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may 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.

[0167] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0168] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen path control method, characterized in that: include: Obtaining a first nitrogen permeation rate and a first liquid water generation rate at a current operating current point in time and a set hydrogen path or water path temperature; Determining a second nitrogen permeation rate and a second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature; obtaining a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate; Adjusting the pre-obtained basic discharge cycle at the current working current moment and the set hydrogen path or water path temperature according to the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge cycle at the current moment; The adjusting of the basic discharge period at the pre-obtained current working current moment and the set hydrogen path or water path temperature according to the first ratio relationship or the second ratio relationship includes: determining a maximum value between the first ratio relationship and the second ratio relationship; The basic emission cycle at the current working current moment and the set hydrogen path or water path temperature obtained in advance is divided by the maximum value, and the obtained value is determined as the adjusted hydrogen path emission cycle at the current moment.

2. The method according to claim 1, characterized in that The obtaining of a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate comprises: If the second nitrogen permeation rate is not less than the first nitrogen permeation rate, the first ratio relationship is the ratio of the second nitrogen permeation rate to the first nitrogen permeation rate; if the second nitrogen permeation rate is less than the first nitrogen permeation rate, the first ratio relationship is 1; If the second liquid water generation rate is not less than the first liquid water generation rate, the second ratio relationship is the ratio of the second liquid water generation rate to the first liquid water generation rate; if the second liquid water generation rate is less than the first liquid water generation rate, the second ratio relationship is 1.

3. The method according to claim 1, characterized in that Also includes: The accumulated integral of the hydrogen discharge cycle is determined based on the adjusted current hydrogen discharge cycle and the communication cycle of the controller. When the accumulated integral reaches a preset value, the hydrogen discharge solenoid valve is controlled to open to discharge the hydrogen path.

4. The method according to claim 1, wherein The obtaining of the first nitrogen permeation rate and the first liquid water generation rate at the current operating current moment and the set hydrogen or water channel temperature includes: Obtaining a set of nitrogen permeation rate values ​​at different operating current time points and different hydrogen path or water path temperatures, and a set of liquid water generation rate values ​​at different operating current time points and different hydrogen path or water path temperatures; A first nitrogen permeation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the nitrogen permeation rate value group, and a first liquid water generation rate at the current working current time point and the set hydrogen path or water path temperature is obtained from the liquid water generation rate value group.

5. The method according to claim 1, wherein The determining of the second liquid water generation rate at the current operating current point in time and the current hydrogen path or water path temperature includes: Obtain the current hydrogen path temperature at the current working current moment; Determining whether the current hydrogen path temperature is not less than a set hydrogen path temperature; If it is determined that the current hydrogen path temperature is not less than the set hydrogen path temperature, determining that the second liquid water generation rate is the same as the first liquid water generation rate; If it is determined that the current hydrogen path temperature is lower than the set hydrogen path temperature, the second liquid water generation rate is determined to be the sum of the first liquid water generation rate and the condensed water generation rate.

6. The method according to claim 5, characterized in that Also includes: determining the condensed water generation rate; Wherein, determining the condensed water generation rate includes: Determine a first gaseous water volume at a design hydrogen path temperature and humidity, and a second gaseous water volume when the current hydrogen path temperature and humidity are 100%; comparing the first gaseous water amount and the second gaseous water amount; If it is determined that the second gaseous water amount is not less than the first gaseous water amount, then the condensed water generation rate is determined to be 0; If it is determined that the second gaseous water amount is less than the first gaseous water amount, a difference obtained by subtracting the first gaseous water amount from the second gaseous water amount is determined as the condensed water generation rate.

7. A hydrogen path control device, characterized in that: include: A first obtaining unit is used to obtain a first nitrogen permeation rate and a first liquid water generation rate at a current working current point in time and a set hydrogen path or water path temperature; A first determining unit is used to determine a second nitrogen permeation rate and a second liquid water generation rate at a current operating current point in time and a current hydrogen path or water path temperature; a second obtaining unit, configured to obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate; an adjusting unit, configured to adjust the previously obtained basic discharge period at the current operating current moment and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship, to obtain an adjusted hydrogen path discharge period at the current moment; Among them, the adjustment unit is specifically used to determine the maximum value between the first ratio relationship and the second ratio relationship; the basic emission cycle at the current working current moment obtained in advance and the set hydrogen path or water path temperature is divided by the maximum value, and the obtained value is determined as the adjusted hydrogen path emission cycle at the current moment.

8. An electronic device, characterized in that: include: a processor, configured to obtain a first nitrogen permeation rate and a first liquid water generation rate at a current operating current time point and a set hydrogen or water path temperature; determine a second nitrogen permeation rate and a second liquid water generation rate at the current operating current time point and a current hydrogen or water path temperature; obtain a first ratio relationship between the second nitrogen permeation rate and the first nitrogen permeation rate, and a second ratio relationship between the second liquid water generation rate and the first liquid water generation rate; and adjust a previously obtained basic discharge period at the current operating current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship to obtain an adjusted hydrogen path discharge period at the current time point; wherein adjusting the previously obtained basic discharge period at the current operating current time point and the set hydrogen or water path temperature according to the first ratio relationship or the second ratio relationship comprises: determining a maximum value between the first ratio relationship and the second ratio relationship; dividing the previously obtained basic discharge period at the current operating current time point and the set hydrogen or water path temperature by the maximum value, and determining the resulting value as the adjusted hydrogen path discharge period at the current time point; The memory is used to store the program for the processor to execute the above processing process.

9. A readable storage medium for storing at least one set of instructions; The instruction set is used to be called and to at least execute the method for controlling the hydrogen path according to any one of claims 1 to 6.

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