Device and method for monitoring ion removal efficiency in activation on line, electronic equipment and storage medium

Abstract

The invention relates to the technical field of fuel cells, in particular to a device and method for monitoring ion removal efficiency in activation on line, electronic equipment and a storage medium. The device for monitoring the ion removal efficiency in the activation on line comprises a steam-water separation device, a solution storage device, a conductivity testing device and a controller. The steam-water separation device is configured to receive gas and a solution generated in the activation process of the fuel cell and separate the gas from the solution. And the solution storage device is configured to receive the solution separated by the steam-water separation device. The conductivity testing device is configured to detect the conductivity of the solution in the solution storage device and output a conductivity detection signal. And the controller is configured to receive the conductivity detection signal, obtain an ion concentration detection value of the foreign ions in the solution, output data of the removal condition of the foreign ions in the activation process of the fuel cell according to the ion concentration detection value, and further judge the cleaning condition of the fuel cell and obtain the ion removal efficiency of the foreign ions.

Description

Technical Field

[0001] The present disclosure relates to the field of fuel cell technology, in particular to the field of fuel cell detection technology, and specifically to a device, method, electronic device and storage medium for online monitoring of ion removal efficiency during activation. Background Art

[0002] Fuel cells are devices that convert chemical energy directly into electrical energy through electrochemical reactions, and have the advantages of high efficiency and environmental protection. In recent years, with the increase in global demand for clean energy, fuel cells have been widely used and developed rapidly, especially in the field of energy vehicles. Fuel cells are considered to be one of the important technologies to replace traditional internal combustion engines.

[0003] Fuel cells need to be activated before they are put into use. This is an essential process for fuel cells and is of great significance for improving the performance of newly produced fuel cells, maintaining stable operation of fuel cells, and extending the service life of fuel cells. Activation changes the performance of newly produced fuel cells mainly in four aspects: 1) Promoting the membrane electrode to reach a hydrated state; 2) Cleaning the membrane electrode, especially the removal of impurity ions; 3) Opening holes to remove excess ionomers and increase the three-phase active sites in the catalyst layer; 4) Catalyst optimization, mainly the removal of the oxide layer on the surface of platinum.

[0004] Except for membrane electrode cleaning, the other three can be characterized or monitored online or offline. However, there is no good method to monitor the cleaning status of membrane electrodes, especially the removal efficiency of impurity ions under different activation conditions, and whether the impurity ions in the membrane electrodes are completely removed. If the membrane electrode is not completely cleaned, the impurity ions in the fuel cell, especially the metal ions, will not only reduce the battery performance, but also reduce its service life.

[0005] Therefore, a device and method for online monitoring of ion removal efficiency during activation are expected to overcome the above problems. Summary of the invention

[0006] The present application provides a device, method, electronic device and storage medium for online monitoring of ion removal efficiency during activation, which can online monitor the removal of impurity ions during the activation process of a fuel cell. The technical solution of the present application is as follows:

[0007] On the one hand, a device for online monitoring of ion removal efficiency during activation is provided, comprising a gas-water separation device, a solution storage device, a conductivity testing device and a controller. The gas-water separation device is configured to receive gas and solution generated during the activation process of a fuel cell, and separate the gas and the solution. The solution storage device is configured to receive the solution separated by the gas-water separation device. The conductivity testing device is configured to detect the conductivity of the solution in the solution storage device and output a conductivity detection signal. The controller is configured to receive the conductivity detection signal, obtain an ion concentration detection value of impurity ions in the solution, and output data on the removal of impurity ions during the activation process of the fuel cell according to the ion concentration detection value.

[0008] The disclosed embodiment provides a device for online monitoring of ion removal efficiency during activation of a fuel cell with simple operation and low cost. The device for online monitoring of ion removal efficiency during activation detects the conductivity of a solution in a solution storage device through a conductivity testing device, and the controller obtains a detection value of impurity ion concentration in the solution based on the conductivity, thereby being able to online detect the ion removal data of impurity ions during fuel cell activation. Exemplarily, the data includes multiple ion concentration detection values ​​obtained at multiple time points under target operating conditions. When the multiple ion concentration detection values ​​are less than or equal to 0 for Y consecutive times in the chronological order, it can be determined that the fuel cell has been cleaned. In addition, the controller can also output the impurity ion removal efficiency of the target time period based on the multiple ion concentration detection values, and the impurity ion removal efficiency is the ratio of the difference between the ion concentration detection values ​​corresponding to the time points at both ends of the target time period to the duration of the target time period.

[0009] Based on the above-mentioned ion removal situation, that is, whether the impurity ion cleaning of the fuel cell is completed, and the ion removal efficiency of the impurity ions, the activation and impurity removal conditions of the fuel cell can be optimized and the activation efficiency can be improved. The actual water discharge and ion concentration of the fuel cell in the activation condition can be detected to ensure the complete removal of impurity ions and improve the service life of the fuel cell.

[0010] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation also includes: a temporary storage device, connected between the steam-water separation device and the solution storage device, and configured to receive the solution output by the steam-water separation device; the controller is also configured to control the solution in the temporary storage device to be injected into the solution storage device when the solution in the temporary storage device meets preset conditions; the preset conditions include the time that the solution stays in the temporary storage device reaching a target time, and the target time is related to the time required for the target operating conditions during the activation process of the fuel cell.

[0011] In a feasible embodiment, the preset condition also includes the solution in the temporary storage device reaching a first target temperature.

[0012] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation further includes a first temperature control device, the first temperature control device includes a first temperature sensor and a first water bath component, and the first temperature sensor and the first water bath component are both connected to the controller. The first temperature sensor is configured to detect the temperature of the solution in the temporary storage device and output a first temperature detection signal to the controller; the controller is also configured to receive the first temperature detection signal and output a first temperature control signal to the first water bath component; the first temperature control signal is used to instruct the first water bath component to heat or not heat the temporary solution storage device so that the temperature of the solution in the temporary solution storage device reaches the first target temperature.

[0013] The first temperature control device can preheat the solution while the temporary storage device collects the solution generated by the fuel cell, reducing the time required for adjusting the temperature of the solution after the solution enters the solution storage device, which is beneficial to improving the detection efficiency of the detection device.

[0014] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation also includes a first liquid level sensor connected to the controller and configured to detect the volume of the solution in the temporary storage device and output a first liquid level detection signal to the controller.

[0015] In a feasible embodiment, the solution storage device includes a plurality of detection tanks, at least two of the plurality of detection tanks have different volumes. The device for online monitoring of ion removal efficiency during activation also includes a multi-way gating component connected to the plurality of detection tanks, and the multi-way gating component is also connected to the controller. The controller is also configured to receive the first liquid level detection signal and output a gating control signal to the multi-way gating component. The gating control signal is used to instruct the multi-way gating component to open a connection path from the temporary storage device to a detection tank having a selected volume, and the selected volume is greater than the volume of the solution in the temporary storage device represented by the first liquid level detection signal.

[0016] The fuel cell can be a single cell, a short stack or a whole stack. The water output of the fuel cell is different in different situations. By setting up multiple detection tanks with different volumes, the appropriate detection tank can be selected according to the volume of solution stored in the temporary storage device, which can not only meet the testing requirements in different situations, but also improve the detection accuracy of conductivity.

[0017] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation also includes a pH adjustment device, which includes a pH sensor and an acid adding component, and the pH sensor and the acid adding component are both connected to the controller; the pH sensor is configured to detect the pH of the solution in the solution storage device and output a pH detection signal to the controller; the controller is also configured to receive the pH detection signal and output a pH control signal to the acid adding component; the pH signal is used to instruct the acid adding component to inject acid into the solution storage device so that the pH of the solution in the solution storage device reaches a target range.

[0018] In a feasible embodiment, the pH adjusting device further includes a first flow meter configured to detect the volume of the acid solution injected into the solution storage device by the acid solution adding component and output a first flow signal to the controller. The controller is further configured to determine a target volume according to the first flow signal to control the volume of the acid solution injected into the solution storage device.

[0019] Adjusting the pH of the solution in the solution storage device to the target range can eliminate the problem of incomplete ionization of impurity ions in a weak alkaline environment, thereby causing inaccurate ion concentration in the test.

[0020] In a feasible embodiment, the target pH range is 3 to 5.

[0021] Adjusting the pH of the solution in the solution storage device to 3-5 can make the solution as a whole acidic. On the one hand, this acidic environment can ensure that the impurity ions, especially the weakly alkaline metal ions, are completely ionized, thereby improving the detection accuracy of the ion concentration of the impurity ions. On the other hand, the excessive addition of acid to the solution storage device will not cause too many ions in the solution, thereby maintaining the positive correlation between the ion concentration and the solution conductivity, thereby avoiding obvious deviations when the controller converts the ion concentration based on the conductivity provided by the conductivity detection signal.

[0022] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation further includes a liquid level calibration device, the liquid level calibration device includes a second liquid level sensor and a calibration liquid adding component, the second liquid level sensor and the calibration liquid adding component are both connected to the controller; the second liquid level sensor is configured to detect the volume of the solution in the solution storage device and output a second liquid level detection signal to the controller. The controller is also configured to receive the second liquid level detection signal and output a first liquid level control signal to the calibration liquid adding component. The first liquid level control signal is used to instruct the calibration liquid adding component to inject calibration liquid into the solution storage device so that the volume of the solution in the solution storage device reaches the target volume; the target volume is the sum of the initial volume of the solution in the solution storage device, the volume of the acid solution injected into the solution storage device, and the volume of the calibration liquid injected into the solution storage device.

[0023] Under different activation conditions and moments of the fuel cell, the water output is inconsistent. The solution calibration device can be used to calibrate the volume of the solution in the solution storage device to ensure that the volume of the solution tested in the same batch is consistent. This can detect the amount of ions in the solution, rather than simply detecting the ion concentration of the solution. When ensuring that the volume of the solution tested in the same batch is consistent, the conductivity of the solution in the solution storage device can be measured to compare the amount of ions in the batch of solutions.

[0024] In a feasible embodiment, the liquid level calibration device further includes a second flow meter configured to detect the volume of the calibration liquid injected into the solution storage device by the calibration liquid adding component and output a second flow signal to the controller. The controller is further configured to control the volume of the calibration liquid injected into the solution storage device according to the second flow signal.

[0025] In a feasible embodiment, the controller is further configured to gradually reduce the volume of the calibration liquid injected by the calibration liquid adding component into the solution storage device per unit time when the calibration liquid adding component injects the calibration liquid into the solution storage device.

[0026] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation further includes a second temperature control device, the second temperature control device includes a second temperature sensor and a second water bath component, and the second temperature sensor and the second water bath component are both connected to the controller. The second temperature sensor is configured to detect the temperature of the solution in the solution storage device and output a second temperature detection signal to the controller. The controller is also configured to receive the second temperature detection signal and output a second temperature control signal to the second water bath component. The second temperature control signal is used to instruct the second water bath component to heat or not heat the solution storage device so that the temperature of the solution in the temporary storage device reaches a second target temperature.

[0027] By adjusting the temperature of the solution in the solution storage device through the second temperature control device, the solution can be heated, cooled or kept warm to ensure that the temperature of the solution remains constant during the detection process, thereby eliminating the influence of temperature changes on conductivity during the detection process.

[0028] In a feasible embodiment, the solution storage device or the temporary storage device is selected from a glass container or a metal container. The metal container includes a coating, the coating at least covers the inner surface of the metal container, and the coating is selected from any one of a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating or an alkyl coating.

[0029] When a metal container is used, a protective coating is added to the inner wall of the metal container to isolate the solution and the metal container, which not only protects the metal container from corrosion, but also prevents the metal container from precipitating metal ions after corrosion, thereby improving the accuracy of the conductivity test results. In addition, a glass container can also be used. The glass container does not react with the solution and does not need to be coated. It has a simple structure and is easy to use.

[0030] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation further comprises a condensation device configured to liquefy the gaseous water in the steam-water separation device.

[0031] The condensing device can liquefy the gaseous water entering the steam-water separation device while preventing the high temperature from causing adverse effects on other structures and connecting pipelines after the steam-water separation device 301 .

[0032] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation further includes a stirring device configured to stir the solution in the solution storage device. The stirring device includes a coating, the coating at least covers the portion of the stirring device located in the solution storage device, and the coating is selected from any one of a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating, or an alkyl coating.

[0033] A protective coating is added to the portion of the stirring device located in the solution storage device, that is, the portion of the stirring device that may contact the solution, to isolate the solution and the stirring device, which not only protects the stirring device from corrosion but also improves the accuracy of the conductivity test result.

[0034] In a feasible embodiment, the device for online monitoring of ion removal efficiency during activation includes a first subsystem and a second subsystem, and the first subsystem and the second subsystem both include the steam-water separation device, the solution storage device and the conductivity testing device; the steam-water separation device of the first subsystem is connected to the anode outlet of the fuel cell, and the steam-water separation device of the second subsystem is connected to the cathode outlet of the fuel cell; the conductivity testing device of the first subsystem and the conductivity testing device of the second subsystem are both connected to the controller.

[0035] On the other hand, a method for online monitoring of ion removal efficiency during activation is provided, which is applied to the above-mentioned device for online monitoring of ion removal efficiency during activation of the fuel cell, and the detection method comprises: receiving a conductivity detection signal output by a conductivity testing device of the device for online monitoring of ion removal efficiency during activation; obtaining the conductivity of an acid solution provided by a pH adjustment device of the device for online monitoring of ion removal efficiency during activation, the conductivity of the acid solution being the conductivity obtained at a second target temperature when an acid solution of an equal volume to the acid solution is mixed with deionized water to a target volume; and obtaining a target duration, the target duration being related to the duration required for a target operating condition during the activation process of the fuel cell; obtaining an ion concentration detection value of impurity ions in the solution according to the conductivity detection signal, the conductivity of the acid solution, and the target duration; and outputting data on the removal of the impurity ions, the data being obtained based on a plurality of ion concentration detection values ​​obtained at a plurality of time points under the target operating condition.

[0036] In a feasible embodiment, the data outputting the removal status of the impurity ions includes: among the multiple ion concentration detection values ​​sorted in chronological order, when the ion concentration detection value is less than or equal to 0 for Y consecutive times, outputting the result data that the fuel cell has completed cleaning; and Y is a positive integer.

[0037] In a feasible embodiment, the output data of the removal status of the impurity ions includes: outputting the impurity ion removal efficiency of the target time period; the impurity ion removal efficiency is the ratio of the difference between the ion concentration detection values ​​corresponding to the time points at both ends of the target time period to the duration of the target time period.

[0038] On the other hand, an electronic device is provided, comprising a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program code, and the computer program code comprises computer instructions; when the processor executes the computer instructions, the electronic device executes the above-mentioned method for online monitoring of ion removal efficiency during activation.

[0039] On the other hand, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and when the instructions are executed on an electronic device, the electronic device executes the above-mentioned method for online monitoring of ion removal efficiency during activation.

[0040] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0042] Figure 1 A schematic diagram of the structure of a fuel cell detection system provided according to some embodiments;

[0043] Figure 2 Another structural schematic diagram of a fuel cell detection system provided according to some embodiments;

[0044] Figure 3 A flow chart of a fuel cell detection method according to some embodiments;

[0045] Figure 4 It is a schematic diagram of the structure of an electronic device provided according to some embodiments. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0047] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0048] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0049] When describing some embodiments, the expression "connected" and its derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term, for example, indicates that two or more components are in direct physical contact or electrical contact. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0050] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0051] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0052] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [a stated condition or event] is detected" are optionally interpreted to mean "upon determining that" or "in response to determining that" or "upon detecting [a stated condition or event]" or "in response to detecting [a stated condition or event]," depending on the context.

[0053] The use of "configured to" herein is intended to be open and inclusive language that does not exclude devices being configured to perform additional tasks or steps.

[0054] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and / or the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. Therefore, the regions shown in the drawings are schematic in nature, and their shapes and proportions are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0055] Figure 1 FIG. 1 is a schematic diagram of a fuel cell detection system according to some embodiments. Figure 1 As shown, the embodiment of the present disclosure provides a detection device 200 for detecting a fuel cell 100, and the detection device 200 is a device for online monitoring of ion removal efficiency during activation. For example, the fuel cell 100 can be any device that directly converts chemical energy in a fuel into electrical energy through an electrochemical reaction. The fuel cell 100 can include an anode gas outlet 101 and a cathode gas outlet 102.

[0056] exist Figure 1 In the figure, the detection device 200 includes a first detection system 201 and a second detection system 202. The first detection system 201 is connected to the anode outlet 101 of the fuel cell 100 to detect the concentration of impurity ions in the solution discharged from the anode outlet 101; the second detection system 202 is connected to the cathode outlet 102 of the fuel cell 100 to detect the concentration of impurity ions in the solution discharged from the cathode outlet 102.

[0057] The following describes the detection system of the embodiment of the present disclosure by taking the first detection system 201 as an example. The first detection system 201 includes a steam-water separation device 301 , a temporary storage device 302 , a first valve 303 , a solution storage device 304 and a controller 307 .

[0058] The gas-water separation device 301 is connected to the anode gas outlet 101 of the fuel cell 100 to receive the gas and liquid generated when the fuel cell 100 is running. The gas-water separation device 301 is configured to separate the gas and liquid and provide the separated solution to the next stage. Exemplarily, the separated solution includes impurity ions.

[0059] The temporary storage device 302 is connected to the steam-water separation device 301. The temporary storage device 302 is configured to receive the solution provided by the steam-water separation device 301 and cooperate with the first valve 303 to temporarily store the solution. Exemplarily, the controller 307 generates a first valve control signal Ss1 according to a preset condition, and the first valve 303 opens upon receiving the first valve control signal Ss1 to provide the solution stored in the temporary storage device 302 of the solution to the next stage. The preset condition includes that the residence time of the solution in the temporary storage device 302 reaches the target duration.

[0060] Exemplarily, the time required for each activation operating stage of the fuel cell 100 is different. The controller 307 is configured to set a target duration according to the time required for different activation operating stages of the fuel cell 100, so that the fuel cell 100 completes the current activation operating stage. After the generated solution is collected by the temporary storage device 302, the first valve 303 is opened to provide the collected solution to the solution storage device 304.

[0061] In some feasible embodiments, the preset condition also includes that the temperature of the solution in the temporary storage device 302 reaches the first target temperature. That is, the solution stays in the temporary storage device 302 for a target time and the temperature of the solution reaches the first target temperature, and the controller 307 generates a first valve control signal Ss1 to open the first valve 303. Exemplarily, the first detection system 201 also includes a first temperature control device 700, the temporary storage device 302 provides a first temperature detection signal Sh1 according to the temperature of the solution stored therein, and the controller 307 receives the first temperature detection signal Sh1 and generates a corresponding first temperature control signal Shc1 according to the first temperature detection signal Sh1. The first temperature control device 700 receives the first temperature control signal Shc1 and adjusts the temperature of the solution stored in the temporary storage device 302 to reach the first target temperature.

[0062] The first temperature control device 700 can preheat the solution generated by the fuel cell 100 while the temporary storage device 302 collects the solution, thereby reducing the time required for adjusting the temperature of the solution after the solution enters the solution storage device 304 , which is beneficial to improving the detection efficiency of the detection device 200 .

[0063] The solution storage device 304 is connected to the first valve 303. When the first valve 303 is opened, the solution in the temporary storage device 302 is received, and the conductivity of the solution is detected to generate a conductivity detection signal Sec. The controller 307 receives the conductivity detection signal Sec and obtains the ion concentration and / or ion amount of the impurity ions in the solution according to the conductivity detection signal Sec.

[0064] In some feasible embodiments, the first detection system 201 further includes a pH adjustment device 400, which is connected to the solution storage device 304. The pH adjustment device 400 adjusts the pH of the solution in the solution storage device 304 under the control of the controller 307. After receiving the solution from the temporary storage device 302, the solution storage device 304 detects the pH of the solution (Pondus Hydrogenii, PH), and generates a pH detection signal Sph according to the pH, and the pH detection signal Sph is used to characterize the pH of the solution in the solution storage device 304. The controller 307 receives the pH detection signal Sph and generates a pH control signal Sphc according to the pH detection signal Sph. After receiving the pH control signal Sphc, the pH adjustment device 400 adds acid to the solution storage device 304 to adjust the pH of the solution in the solution storage device 304, so that the pH of the solution in the solution storage device 304 reaches the target range. Exemplarily, the acid solution used to adjust the pH value may be a strong acid solution such as hydrochloric acid.

[0065] By adjusting the pH of the solution in the solution storage device 304 to a target range, the problem of incomplete ionization of impurity ions in a weak alkaline environment, which results in inaccurate ion concentration in the detection, can be eliminated.

[0066] Exemplarily, the target range is 3-5, that is, after being adjusted by the pH adjusting device 400, the pH of the solution in the solution storage device 304 is 3-5.

[0067] Adjusting the pH of the solution in the solution storage device 304 to 3-5 can make the solution as a whole acidic. On the one hand, this acidic environment can ensure that the impurity ions, especially the weakly alkaline metal ions, are completely ionized, thereby improving the detection accuracy of the ion concentration of the impurity ions. On the other hand, the excessive addition of acid to the solution storage device 304 will not cause too many ions in the solution, thereby maintaining the positive correlation between the ion concentration and the solution conductivity, thereby avoiding obvious deviations when the controller 307 converts the ion concentration according to the conductivity provided by the conductivity detection signal Sec.

[0068] In some feasible embodiments, the first detection system 201 further includes a solution calibration device 500, which is connected to the solution storage device 304. The solution calibration device 500 adjusts the volume of the solution in the solution storage device 304 under the control of the controller 307. After receiving the solution provided by the temporary storage device 302, the solution storage device 304 generates a second liquid level detection signal Sv2, which is used to characterize the volume of the solution in the solution storage device 304. The controller 307 receives the second liquid level detection signal Sv2 and generates a first liquid level control signal Svc1 according to the second liquid level detection signal Sv2. After receiving the first liquid level control signal Svc1, the solution calibration device 500 adds calibration liquid to the solution storage device 304 until the volume of the solution in the solution storage device 304 reaches the target volume. Exemplarily, the calibration liquid can be deionized water.

[0069] Under different activation conditions and moments of the fuel cell, the water output is inconsistent. The solution calibration device 500 can calibrate the volume of the solution in the solution storage device 304 to ensure that the volume of the solution detected in the same batch is consistent. In this way, the amount of ions in the solution can be detected, rather than simply the ion concentration of the solution. When the volume of the solution detected in the same batch is ensured to be consistent, the conductivity of the solution in the solution storage device 304 can be measured to compare the amount of ions in the batch of solutions.

[0070] It should be understood that the adjustment of the pH value of the solution in the solution storage device 304 and the adjustment of the volume of the solution do not have a specific order. For example, the pH value of the solution in the solution storage device 304 can be adjusted first, and then the volume of the solution in the solution storage device 304 can be adjusted after no more acid is added. The two can also be performed simultaneously or alternately. When acid is added to the solution storage device 304, the volume of the solution in the solution storage device 304 changes, and the second liquid level detection signal Sv2 representing the volume of the solution in the solution storage device 304 also changes accordingly. The controller 307 adjusts the first liquid level control signal Svc1 according to the change of the second liquid level detection signal Sv2, thereby changing the volume of calibration liquid that the solution calibration device 500 needs to add to the solution storage device 304.

[0071] Exemplarily, the controller 307 is further configured to calculate, based on the target volume, the amount of acid solution that needs to be added to adjust the pH value of the solution of the target volume to a target range.

[0072] In some feasible embodiments, the first detection system 201 further includes a second temperature control device 600, which is connected to the solution storage device 304 and adjusts the temperature of the solution in the solution storage device 304 under the control of the controller 307. After receiving the solution provided by the temporary storage device 302, the solution storage device 304 generates a second temperature detection signal Sh2, which is used to characterize the temperature of the solution in the solution storage device 304. The controller 307 receives the second temperature detection signal Sh2 and generates a second temperature control signal Shc2 according to the second temperature detection signal Sh2. After receiving the second temperature control signal Shc2, the second temperature control device 600 adjusts the temperature of the solution in the solution storage device 304 to the second target temperature.

[0073] By adjusting the temperature of the solution in the solution storage device 304 through the second temperature control device 600, the solution can be heated, cooled or kept warm to ensure that the temperature of the solution remains constant during the detection process, thereby eliminating the influence of temperature changes on conductivity during the detection process.

[0074] Exemplarily, assuming that the ion concentration detection value (referred to as ion concentration) is X, then X=(WS) / T, where W is the conductivity of the solution in the solution storage device 304 obtained according to the conductivity detection signal Sec, S is the conductivity of the acid solution when the temperature is the second target temperature and the acid solution provided by the pH adjustment device 400 is mixed with deionized water to the target volume, and T is the collection time of the solution, that is, the target duration. It should be understood that the ion concentration X here is the conductivity of the solution with the target volume accurately measured, and is equivalent to the ion concentration detection value of the solution at the target volume.

[0075] Exemplarily, the volume of the acid solution provided to the detection tank 305 by the pH adjustment device 400 can be obtained according to the second flow meter 404, and equal volumes of the acid solution are mixed with deionized water until the volume of the mixed solution reaches the target volume. At this time, the pH of the mixed solution is detected to obtain the conductivity S.

[0076] During the detection of the fuel cell 100, multiple ion concentration detection values ​​are detected in time sequence, namely X1, X2..., Xn. On the one hand, the impurity ion discharge amount in different time periods in the fuel cell activation condition can be calculated based on the above data, and its ion discharge efficiency can be further calculated. On the other hand, when the point where Xn is less than or equal to 0 appears Y times in succession, it can be determined that the impurity ions in the fuel cell 100 have been cleaned. For example, Y can be a natural number such as 1, 2, 3, etc.

[0077] The second detection system 202 is connected to the cathode gas outlet 102 of the fuel cell 100 to receive the gas and liquid discharged from the cathode of the fuel cell 100. The structure of the detection device 200 is similar to that of the first detection system 201, so it is not repeated here.

[0078] It should be understood that the detection device 200 provided in the embodiment of the present disclosure can detect the concentration of impurity ions in the solution discharged from the anode outlet 101 alone, or detect the concentration of impurity ions in the solution discharged from the cathode outlet 102 alone, or simultaneously and independently detect the concentration of impurity ions in the solutions discharged from the anode outlet 101 and the cathode outlet 102, or mix the solutions discharged from the anode outlet 101 and the cathode outlet 102 and then detect the concentration of impurity ions in the mixed solution, and the present disclosure does not limit this.

[0079] Figure 2 FIG. 1 is another schematic diagram of a fuel cell detection system according to some embodiments. Figure 2 As shown, the embodiment of the present disclosure provides a detection device 200 for detecting a fuel cell 100. The fuel cell 100 may include an anode gas outlet 101 and a cathode gas outlet 102. Figure 1 right Figure 2 The detection system shown is further described.

[0080] exist Figure 2 In the figure, the detection device 200 includes a first detection system 201 and a second detection system 202. The first detection system 201 is connected to the anode outlet 101 of the fuel cell 100 to detect the concentration of impurity ions in the solution discharged from the anode outlet 101; the second detection system 202 is connected to the cathode outlet 102 of the fuel cell 100 to detect the concentration of impurity ions in the solution discharged from the cathode outlet 102.

[0081] The following describes the detection system of the embodiment of the present disclosure by taking the first detection system 201 as an example. The first detection system 201 also includes a condensing device 308, which partially or completely covers the gas-water separation device 301 to cool and condense the gas and / or liquid generated by the anode outlet 101 of the fuel cell 100, so as to liquefy the gaseous water entering the gas-water separation device 301 while preventing the high temperature from causing adverse effects on other structures and connecting pipelines after the gas-water separation device 301.

[0082] Exemplarily, the steam-water separation device 301 further includes an exhaust port 311 for exhausting the gas separated by the steam-water separation device 301 .

[0083] The solution storage device 304 includes one or more detection tanks 305. The following description is made by taking the solution storage device 304 including one detection tank 305 as an example. It should be understood that the present disclosure does not limit the number of detection tanks 305 included in the solution storage device 304. The exemplary detection tank 305 also includes a water outlet 310, which is used to discharge the solution in the detection tank 305 after the detection is completed, and to discharge the cleaning liquid in the detection tank 305 when the detection tank 305 is cleaned after the solution is discharged. The cleaning liquid can be deionized water.

[0084] In some feasible embodiments, the first temperature control device 700 includes a first temperature sensor 701 and a first water bath component 702. The first temperature sensor 701 is located in the temporary storage device 302 and is configured to detect the temperature of the solution entering the temporary storage device 302 to generate a first temperature detection signal Sh1. The temporary storage device 302 is partially or completely immersed in the first water bath component 702. The controller 307 receives the first temperature detection signal Sh1 provided by the first temperature sensor 701 and generates a corresponding first temperature control signal Shc1. After receiving the first temperature control signal Shc1, the first temperature control device 700 changes the temperature of the first water bath component 702, heats or does not heat the temporary storage device 302, thereby adjusting the temperature of the solution in the temporary storage device 302. Exemplarily, after receiving the first temperature control signal Shc1, the first temperature control device 700 adjusts the temperature of the solution in the temporary storage device 302 to a first target temperature. Exemplarily, the first target temperature may be 23 degrees Celsius, 25 degrees Celsius, or 27 degrees Celsius.

[0085] Exemplarily, the pH adjusting device 400 includes a pH sensor 401, an acid adding component, a first flow meter 404 and a third valve 405, and the acid adding component includes an acid storage container 402 and an acid adding pump 403. The pH sensor 401 is located in the detection tank body 305, and is used to detect the pH of the solution in the detection tank body 305, and generate a corresponding pH detection signal Sph. The acid storage container 402 stores an acid for adjusting the pH of the solution, and exemplary, the acid can be a strong acid such as hydrochloric acid. The acid adding pump 403 is connected to the acid storage container 402, and is used to provide the acid stored in the acid storage container 402 to the detection tank body 305. The first flow meter 404 is connected to the acid pump 403, and is used to measure the flow of the acid solution entering the detection tank 305, further obtain the volume of the acid solution entering the detection tank 305, and provide a first flow signal to the controller 307, and the controller 307 controls the volume of the acid solution injected into the detection tank 305 according to the first flow signal. The third valve 405 is connected to the acid pump 403 and the detection tank 305, and is used to control the opening and closing of the pipeline from the acid storage container 402 to the detection tank 305. On the one hand, the first flow meter 404 can detect the volume of the acid solution provided to the detection tank 305 by the pH adjustment device 400,

[0086] The controller 307 receives the pH detection signal Sph and generates a pH control signal Sphc according to the pH detection signal Sph. After receiving the pH control signal Sphc, the pH adjustment device 400 opens the third valve 405 and starts the acid pump 403 to provide the acid stored in the acid storage container 402 to the detection tank 305 until the pH of the solution in the detection tank 305 reaches the target range. The acid pump 403 stops working and the third valve 405 is closed.

[0087] In some feasible embodiments, the solution calibration device 500 includes a second liquid level sensor 501, a calibration liquid adding component, a second flowmeter 504 and a second valve 505, and the calibration liquid adding component includes a calibration liquid storage container 502 and a water pump 503. The second liquid level sensor 501 is located in the detection tank 305, and is used to generate a second liquid level detection signal Sv2, and the second liquid level detection signal Sv2 is used to characterize the volume of the solution in the detection tank 305. The calibration liquid storage container 502 stores the calibration liquid, and the calibration liquid can be deionized water. The water pump 503 is connected to the calibration liquid storage container 502, and is used to provide the calibration liquid in the calibration liquid storage container 502 to the detection tank 305. The second flow meter 504 is connected to the water pump 503, and is used to measure the flow rate of the calibration liquid entering the detection tank 305, further obtain the volume of the calibration liquid entering the detection tank 305, and output a second flow signal to the controller 307. The controller 307 controls the calibration liquid injected into the detection tank 305 according to the second flow signal. The second valve 505 is connected to the second flow meter 504 and the detection tank 305, and is used to control the opening and closing of the pipeline from the calibration liquid storage container 502 to the detection tank 305.

[0088] The controller 307 receives the second liquid level detection signal Sv2 and generates a first liquid level control signal Svc1 according to the second liquid level detection signal Sv2. After receiving the first liquid level control signal Svc1, the solution calibration device 500 opens the second valve 505 and starts the water pump 503 at the same time, and provides the calibration liquid stored in the calibration liquid storage container 502 to the detection tank 305 until the volume of the solution in the detection tank 305 reaches the target volume, the water pump 503 stops working and the second valve 505 is closed. Exemplarily, the target volume can be determined according to the water output of the fuel cell 100 and / or the target duration of the solution staying in the temporary storage device 302. For example, when the fuel cell 100 is selected from a 10 kW stack and the target duration is 10 minutes, the target volume can be 100 ml.

[0089] Exemplarily, in order to ensure that the volume of the solution in the detection tank 305 accurately reaches the target volume, the controller 307 is configured to: calculate the calibration liquid addition amount C, in cubic centimeters, and the controller 307 obtains the rotation speed of the water pump 503 according to the calibration liquid addition amount C, and adjusts the rotation speed of the water pump 503 so that the flow rate of the calibration liquid entering the detection tank 305 gradually decreases with the increase of time, so that the final volume of the calibration liquid entering the detection tank 305 is infinitely close to C.

[0090] Specifically, C=GHF, where G is the target volume in cubic centimeters, H is the volume of the solution entering the detection tank 305 from the temporary storage device 302, that is, the initial volume of the solution in the detection tank 305 in cubic centimeters, which can be obtained by the first liquid level detection signal Sv1 provided by the first liquid level sensor 312, and F is the volume of the acid solution entering the detection tank 305 in cubic centimeters, which can be calculated by the first flow meter 404. Wherein T is the running time of the water pump 503, in seconds, S is the impeller inlet area of ​​the water pump 503, in square centimeters, and n is the rotation speed of the water pump 503, in revolutions per minute.

[0091] In some feasible embodiments, the second temperature control device 600 includes a second temperature sensor 601 and a second water bath component 602. The second temperature sensor 601 is located in the detection tank 305 and generates a second temperature detection signal Sh2 according to the temperature of the solution entering the detection tank 305. The third valve 405 is partially or completely immersed in the second water bath component 602. The controller 307 receives the second temperature detection signal Sh2 provided by the second temperature sensor 601 and generates a corresponding second temperature control signal Shc2. After receiving the second temperature control signal Shc2, the second temperature control device 600 changes the temperature of the second water bath component 602 to adjust the temperature of the solution in the detection tank 305. Exemplarily, after receiving the second temperature control signal Shc2, the second temperature control device 600 adjusts the temperature of the solution in the temporary storage device 302 to the second target temperature. Exemplarily, the second target temperature can be 23 degrees Celsius, 25 degrees Celsius, or 27 degrees Celsius.

[0092] In some feasible embodiments, the solution storage device 304 includes a plurality of detection tanks 305, and the number of detection tanks 305 included in the solution storage device 304 may be 2, 3 or 4. At this time, at least two of the plurality of detection tanks 305 have different volumes. Exemplarily, the first detection system 201 further includes a multi-way gating component (not shown in the figure), which is connected to the plurality of detection tanks 305. When the first valve 303 is opened to provide the solution stored in the temporary storage device 302 to the solution storage device 304, the controller 307 receives the first liquid level detection signal Sv1 provided by the first liquid level sensor 312, and outputs a gating control signal to the multi-way gating component, which is used to instruct the multi-way gating component to open the connection path from the temporary storage device 302 to the detection tank 305 with the selected volume, so that the solution in the temporary storage device 302 enters the detection tank 305 with the selected volume.

[0093] In some feasible embodiments, the temporary storage device 302 and / or the solution storage device 304 are selected from any one of a metal container and a glass container. When selected from a metal container, the metal container includes a coating, and the coating at least covers the inner surface of the metal container. Exemplarily, the coating is selected from a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating, or an alkyl coating.

[0094] The solution stored in the temporary storage device 302 or the solution storage device 304 will corrode the inner wall of the metal container to a certain extent. After the pH adjustment device 400 adjusts the solution in the solution storage device 304 to an acidic environment, the degree of corrosion will be further aggravated. On the one hand, it will accelerate the loss of the temporary storage device 302 and the solution storage device 304, and on the other hand, the precipitated metal ions will also affect the conductivity test results. Therefore, when a metal container is used, a protective coating is added to the inner wall of the metal container to isolate the solution and the metal container, which not only protects the metal container from corrosion, but also improves the accuracy of the conductivity test results. In addition, a glass container can also be used. The glass container does not react with the solution and does not need to add a coating. The structure is simple and easy to use.

[0095] The fuel cell 100 can be a single cell, a short stack or a whole stack. The water output of the fuel cell 100 is different in different situations. A plurality of detection tanks 305 with different volumes are provided. A suitable detection tank 305 can be selected according to the volume of the solution stored in the temporary storage device 302. This can not only meet the testing requirements in different situations, but also improve the detection accuracy of the conductivity.

[0096] Exemplarily, when the solution storage device 304 includes multiple detection tanks 305, each detection tank 305 includes a pH sensor 401, the pH adjustment device 400 includes multiple pipelines connecting the first flow meter 404 and the corresponding detection tank 305, each pipeline includes a third valve 405, and when the pH of the solution in the selected detection tank 305 needs to be adjusted, the controller 307 controls the pH adjustment device 400 to open the corresponding third valve 405 to add acid into the selected detection tank 305.

[0097] When the solution storage device 304 includes a plurality of detection tanks 305 , the structures of the solution calibration device 500 and the second temperature control device 600 are similar to those of the pH adjustment device 400 , and are not described in detail herein.

[0098] The disclosed embodiment provides a detection system for a fuel cell that is easy to operate and low in cost. The detection system detects the conductivity of a solution in a solution storage device through a conductivity testing device, and the controller obtains a detection value of the impurity ion concentration in the solution based on the conductivity, so that the ion removal data of the impurity ions in the activation of the fuel cell can be detected online. Exemplarily, the data includes multiple ion concentration detection values ​​obtained at multiple time points under the target operating conditions. When the multiple ion concentration detection values ​​are less than or equal to 0 for Y consecutive times in the chronological order, it can be determined that the fuel cell has been cleaned. In addition, the controller can also output the impurity ion removal efficiency of the target time period based on the multiple ion concentration detection values. The impurity ion removal efficiency is the ratio of the difference between the ion concentration detection values ​​corresponding to the time points at both ends of the target time period to the duration of the target time period.

[0099] According to the above ion removal situation, that is, whether the impurity ion cleaning of the fuel cell is completed, and the ion removal efficiency of the impurity ions, the activation and impurity removal conditions of the fuel cell can be optimized and the activation efficiency can be improved. The actual water discharge and ion concentration of the fuel cell in the activation condition can be detected to ensure the complete removal of impurity ions and improve the service life of the fuel cell. On the one hand, the inspection system provided by the present disclosure can monitor the removal of impurity ions during the fuel cell cleaning process online, thereby assisting in selecting a condition that is more suitable for ion removal; on the other hand, the detection device can more accurately provide the time when the impurity ion cleaning is completed. Generally, the removal of impurity ions is the last process to be completed in the fuel cell activation process. The accurate completion time of impurity ion cleaning can improve the efficiency of judging the end of activation, thereby improving the activation efficiency.

[0100] The present disclosure also provides a fuel cell detection method, see Figure 3 , Figure 3 The following is a flow chart of a fuel cell detection method according to some embodiments, which is a method for online monitoring of ion removal efficiency during activation. Figures 1 to 3 The fuel cell detection method provided by the embodiment of the present disclosure is described. The fuel cell detection method includes steps S10 to S50.

[0101] In step S10, a conductivity detection signal output by a conductivity testing device of the detection system is received. Exemplarily, step S10 includes steps S11 to S14.

[0102] In step S11, the gas and solution generated by the electrode gas outlet of the fuel cell 100 are separated. Exemplarily, the gas-water separation device 301 of the first detection system 201 is connected to the anode gas outlet 101 of the fuel cell 100 to receive the gas and solution generated by the fuel cell 100, and the gas-water separation device 301 separates the gas and solution, and the gas can be discharged through the exhaust port 311, and the solution is provided to the temporary storage device 302.

[0103] In some feasible embodiments, the first detection system 201 further includes a condensation device 308 , which partially or completely covers the steam-water separation device 301 to cool and condense the gas and / or liquid provided by the anode outlet 101 of the fuel cell 100 .

[0104] In step S12 , the separated solution is received and stored. Exemplarily, the solution separated by the steam-water separation device 301 enters the solution storage device 304 .

[0105] In some feasible embodiments, a temporary storage device 302 is further included between the steam-water separation device 301 and the solution storage device 304. The solution separated by the steam-water separation device 301 enters the temporary storage device 302. When the preset conditions are met, the controller 307 opens the first valve 303, and the solution enters the solution storage device 304 from the temporary storage device 302. Exemplarily, the preset conditions include that the residence time of the solution in the temporary storage device 302 reaches a target duration, and the target duration is determined according to the time required for different activation operating sections of the fuel cell 100 to ensure that the solution generated after the fuel cell 100 completes the current activation operating section is collected by the temporary storage device 302.

[0106] In some feasible embodiments, the preset conditions also include that the solution in the temporary storage device 302 reaches a first target temperature, and the solution is preheated when the temporary storage device 302 collects the solution, thereby reducing the time required to adjust the solution temperature in subsequent steps, thereby improving detection efficiency.

[0107] In some feasible embodiments, when the solution storage device 304 includes multiple detection tanks 305, and at least two of the multiple detection tanks 305 have different volumes, the first detection system 201 includes a multi-way gating component, which is connected to the multiple detection tanks 305, and step S12 also includes: the controller 307 receives the first liquid level detection signal Sv1 output by the first liquid level sensor 312, and outputs a gating control signal to the multi-way gating component, and the gating control signal is used to instruct the multi-way gating component to open the connection path from the temporary storage device 302 to the detection tank 305 with the selected volume, so that the solution in the temporary storage device 302 enters the detection tank 305 with the selected volume.

[0108] In step S13, the conductivity of the solution is detected and a conductivity detection signal is output.

[0109] First, adjust the solution parameters, which include at least one of pH, temperature and volume. Exemplarily, the controller 307 receives the pH detection signal Sph provided by the pH sensor 401, generates a pH control signal Sphc according to the pH detection signal Sph, and controls the pH adjustment device 400 to adjust the pH of the solution in the detection tank 305, and adjusts its pH to 3-5 to ensure that the metal ions in the solution are completely ionized, eliminate the influence of incomplete ionization on conductivity, and improve the accuracy of detection.

[0110] In some feasible embodiments, the controller 307 receives a second liquid level detection signal Sv2 provided by the second liquid level sensor 501, generates a first liquid level control signal Svc1 according to the second liquid level detection signal Sv2, controls the solution calibration device 500 to adjust the volume of the solution in the detection tank 305, and adjusts the volume of the solution in the detection tank 305 to a target volume, so as to ensure that the volume of all solutions measured each time in the same batch is consistent, thereby improving the accuracy of detection.

[0111] Exemplarily, the controller 307 receives a second temperature detection signal Sh2 provided by the second temperature sensor 601, and generates a second temperature control signal Shc2 based on the second temperature detection signal Sh2 to control the second water bath component 602 to adjust the temperature of the solution in the detection tank 305 to a second target temperature to ensure consistent temperature during detection, eliminate the influence of temperature on conductivity, and improve detection accuracy.

[0112] In some feasible embodiments, step S31 further includes: after the adjustment of the solution parameters is completed, the stirring device 309 is started to stir the solution in the detection tank 305 to ensure uniform fanning of ions, thereby improving the accuracy of conductivity detection.

[0113] In some feasible embodiments, if the stirring device 309 comprises a metal material, it comprises a coating, and the coating at least covers the portion of the stirring device 309 located in the detection tank 305. Exemplarily, the coating is selected from a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating or an alkyl coating.

[0114] If the stirring device 309 includes metal, a protective coating is added to the portion of the stirring device 309 located in the detection tank 305, that is, the portion of the stirring device that may contact the solution, to isolate the solution and the stirring device 309, which not only protects the stirring device from corrosion but also improves the accuracy of the conductivity test result.

[0115] After the adjustment of the solution parameters is completed, the solution conductivity is detected and a conductivity detection signal is output. The conductivity testing device 306 detects the conductivity of the solution in the detection tank 305 and outputs a conductivity detection signal Sec.

[0116] In step S20, the conductivity of the acid solution provided by the pH adjustment device of the detection system is obtained, the conductivity of the acid solution is the conductivity obtained when an acid solution with an equal volume as the acid solution is mixed with deionized water to a target volume at a second target temperature; and the target duration is obtained, which is related to the duration required for the target operating conditions during the activation process of the fuel cell.

[0117] In step S30, the ion concentration detection value of the impurity ions in the solution is obtained according to the conductivity detection signal, the conductivity of the acid solution, and the target time.

[0118] Exemplarily, the ion concentration detection value of the impurity ions X = (WS) / T, wherein W is the conductivity of the solution in the solution storage device 304 obtained according to the conductivity detection signal Sec, S is the conductivity of the acid solution output by the pH adjustment device 400 when the temperature is the second target temperature and the pH is within the target range, and T is the collection time of the solution, that is, the target duration.

[0119] In step S40, data on the removal of the impurity ions is output, where the data is obtained based on a plurality of ion concentration detection values ​​obtained at a plurality of time points under the target operating condition.

[0120] Exemplarily, in the target operating stage of the activation process of the fuel cell 100, the ion concentration is detected at regular time intervals, and at times t1, t2, ..., tn, corresponding multiple ion concentration detection values ​​X1, X2, ..., Xn are obtained.

[0121] In step S50, when the solution ion concentration is less than or equal to 0 for Y consecutive times, it is determined that the fuel cell 100 has been cleaned. In step S40, the solution ion concentration detection values ​​are detected and recorded multiple times at different activation conditions and times. When the solution ion concentration is less than or equal to 0 for Y consecutive times, it is determined that the fuel cell 100 has been cleaned. Y can be an integer greater than 0. For example, Y can be selected from any one of 1, 2 or 3.

[0122] In some feasible embodiments, the detection method further includes step S60. In step S60, the controller 307 can not only determine the time when the fuel cell 100 is cleaned, but also obtain the ion removal efficiency of the fuel cell 100 based on the recorded multiple ion concentration detection values, for example, the ion removal amount per minute during the cleaning process of the fuel cell 100 can be obtained.

[0123] Exemplarily, the controller 307 calculates the difference between any two ion concentration detection values ​​and the ratio of the time difference corresponding to the ion concentration detection value to output the impurity ion removal efficiency in the corresponding time period, for example (X2-X1) / (t2-t1), which is the ion removal efficiency in the time period t1-t2.

[0124] In some feasible embodiments, the detection method further includes S70, in which the detection tank body 305 is cleaned. The water outlet 310 is opened to discharge the solution in the detection tank body 305, the water outlet 310 is closed and the solution calibration device 500 provides deionized water to the detection tank body 305 to clean the detection tank body 305, and after the cleaning is completed, the water outlet 310 is opened again to discharge the deionized water used for cleaning, and this step can be repeated multiple times.

[0125] After the conductivity of the solution in the detection tank 305 is detected, the solution is discharged from the water outlet 310 under the control of the controller 307. At the same time, deionized water can be introduced to clean the detection tank 305, which can effectively prevent the residual impurity ions in the detection tank 305 from having an adverse effect on the next detection.

[0126] In the case of implementing the above fuel cell detection method in the form of hardware, the present application embodiment provides a possible structural diagram of the electronic device involved in the above embodiment. Figure 4 As shown, Figure 4 1 is a schematic diagram of the structure of an electronic device according to some embodiments. The electronic device 90 includes a processor 910, a memory 920, and a bus 930. The processor 910 and the memory 920 are connected via a bus 930, for example.

[0127] The processor 910 is, for example, the control center of the electronic device 90. The processor 910 may be selected from a single processor or may be a general term for multiple processing elements. Exemplarily, the processor 910 is selected from a general-purpose central processing unit (CPU) or may be other general-purpose processors. The general-purpose processor may be a microprocessor or any conventional processor.

[0128] In a feasible embodiment, the processor 910 includes one or more CPUs, such as CPU0 911 and CPU1 912 shown in the test device 10 .

[0129] The memory 920 is, for example, selected from a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, and may also be an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0130] As a possible implementation, the memory 920 exists independently of the processor 910, for example, and the memory 920 is connected to the processor 910 via a bus 930, and is used to store instructions or program codes. When the processor 910 calls and executes the instructions or program codes stored in the memory 920, the fuel cell detection method provided in the embodiment of the present disclosure can be implemented.

[0131] It should be noted that the processor 910 may be the same as the above processor, or may be a different device, which is not limited in the embodiments of the present application.

[0132] In another possible implementation, the memory 920 may also be integrated with the processor 910 .

[0133] The bus 930 is selected from, for example, an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0134] It should be pointed out that Figure 4 The structure shown does not constitute a limitation on the electronic device 90. Figure 4 In addition to the components shown, the electronic device 90 may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0135] In a feasible embodiment, the electronic device 90 provided in the embodiment of the present application may further include a communication interface 940 .

[0136] The communication interface 940 is used to connect with other devices through a communication network. The communication network is selected from, for example, Ethernet, wireless access network, wireless local area network (WLAN), etc. The communication interface 940 may include a receiving unit 941 for receiving data and a sending unit 942 for sending data.

[0137] In one design, the communication interface 940 of the electronic device 90 provided in the embodiment of the present disclosure may also be integrated into the processor 910 .

[0138] In another hardware structure of the electronic device 90 provided in the embodiment of the present application, Figure 4 As shown, the electronic device 90 may include a processor 910 and a memory 920. The processor 910 is connected to the memory 920 via a connection line. The memory 920 stores application code.

[0139] The functions of the processor may refer to the description of the above processor.

[0140] It should be noted that the above-mentioned another hardware structure does not constitute a limitation on the electronic device 90. In addition to the above-mentioned another hardware component, the electronic device may include more or fewer components, or a combination of certain components, or different component arrangements.

[0141] In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the structural schematic diagram of the electronic device involved in the above-mentioned embodiment provided in the embodiment of the present application can refer to the description of the electronic device 90 and will not be repeated here.

[0142] The disclosed embodiment also provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the vehicle cabin image testing method in the above method embodiment.

[0143] Among them, the computer readable storage medium is, for example, selected from but not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above. More specific examples of computer readable storage media (non-exhaustive list) include: an electrical connection with one or more wires, a portable computer disk, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), registers, hard disks, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any other form of computer readable storage medium in a suitable combination of the above, or numerical values ​​in the art. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present application, a computer-readable storage medium may be any tangible medium that contains or stores a program, which may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0144] Since the server, user equipment, computer-readable storage medium, and computer program product in the embodiments of the present application can be applied to the above method, the technical effects that can be obtained can also refer to the above method embodiments, and the embodiments of the present application will not be repeated here.

[0145] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A device for online monitoring of ion removal efficiency during activation, characterized in that: include: A gas-water separation device, configured to receive gas and solution generated during the activation process of the fuel cell and separate the gas and solution; A solution storage device, configured to receive the solution separated by the steam-water separation device; A conductivity testing device, configured to detect the conductivity of the solution in the solution storage device and output a conductivity detection signal; The controller is configured to receive the conductivity detection signal, obtain an ion concentration detection value of the impurity ions in the solution, and output data on the removal of the impurity ions during the activation process of the fuel cell according to the ion concentration detection value.

2. The device for online monitoring of ion removal efficiency during activation according to claim 1, characterized in that: Also includes: a temporary storage device, connected between the steam-water separation device and the solution storage device, and configured to receive the solution output by the steam-water separation device; The controller is further configured to control the solution in the temporary storage device to be injected into the solution storage device when the solution in the temporary storage device meets a preset condition; The preset condition includes that the solution stays in the temporary storage device for a target time, and the target time is related to the time required for the target operating condition during the activation process of the fuel cell.

3. The device for online monitoring of ion removal efficiency during activation according to claim 2, characterized in that: The preset condition also includes that the solution in the temporary storage device reaches a first target temperature.

4. The device for online monitoring of ion removal efficiency during activation according to claim 3, characterized in that: Also includes: A first temperature control device, the first temperature control device comprising a first temperature sensor and a first water bath component, the first temperature sensor and the first water bath component are both connected to the controller; The first temperature sensor is configured to detect the temperature of the solution in the temporary storage device and output a first temperature detection signal to the controller; The controller is also configured to receive the first temperature detection signal and output a first temperature control signal to the first water bath component; the first temperature control signal is used to instruct the first water bath component to heat or not heat the temporary solution storage device so that the temperature of the solution in the temporary solution storage device reaches the first target temperature.

5. The device for online monitoring of ion removal efficiency during activation according to claim 2, characterized in that: Also includes: The first liquid level sensor is connected to the controller and is configured to detect the volume of the solution in the temporary storage device and output a first liquid level detection signal to the controller.

6. The device for online monitoring of ion removal efficiency during activation according to claim 5, characterized in that: The solution storage device comprises a plurality of detection tanks, at least two of which have different volumes; The device for online monitoring of ion removal efficiency during activation further comprises a multiplexer connected to the plurality of detection tanks, and the multiplexer is also connected to the controller; The controller is also configured to receive the first liquid level detection signal and output a gate control signal to the multi-way gate component; the gate control signal is used to instruct the multi-way gate component to open a connection path from the temporary storage device to a detection tank body with a selected volume, and the selected volume is greater than the volume of the solution in the temporary storage device represented by the first liquid level detection signal.

7. The device for online monitoring of ion removal efficiency during activation according to any one of claims 1 to 6, characterized in that: Also includes: A pH adjusting device, the pH adjusting device comprising a pH sensor and an acid adding component, the pH sensor and the acid adding component are both connected to the controller; The pH sensor is configured to detect the pH of the solution in the solution storage device and output a pH detection signal to the controller; The controller is also configured to receive the pH detection signal and output a pH control signal to the acid adding component; the pH control signal is used to instruct the acid adding component to inject acid into the solution storage device so that the pH of the solution in the solution storage device reaches a target range.

8. The device for online monitoring of ion removal efficiency during activation according to claim 7, characterized in that: The pH adjusting device further includes a first flow meter configured to detect the volume of the acid solution injected into the solution storage device by the acid solution adding component and output a first flow signal to the controller; The controller is further configured to determine a target volume according to the first flow signal to control the volume of the acid solution injected into the solution storage device.

9. The device for online monitoring of ion removal efficiency during activation according to claim 7, characterized in that: The target range is pH 3 to 5.

10. The device for online monitoring of ion removal efficiency during activation according to any one of claims 1 to 6, characterized in that: Also includes: A liquid level calibration device, the liquid level calibration device comprising a second liquid level sensor and a calibration liquid adding component, the second liquid level sensor and the calibration liquid adding component are both connected to the controller; The second liquid level sensor is configured to detect the volume of the solution in the solution storage device and output a second liquid level detection signal to the controller; The controller is further configured to receive the second liquid level detection signal and output a first liquid level control signal to the calibration liquid adding component; the first liquid level control signal is used to instruct the calibration liquid adding component to inject calibration liquid into the solution storage device so that the volume of the solution in the solution storage device reaches a target volume; The target volume is the sum of the initial volume of the solution in the solution storage device, the volume of the acid solution injected into the solution storage device, and the volume of the calibration solution injected into the solution storage device.

11. The device for online monitoring of ion removal efficiency during activation according to claim 10, characterized in that: The liquid level calibration device further comprises a second flow meter configured to detect the volume of the calibration liquid injected into the solution storage device by the calibration liquid adding component and output a second flow signal to the controller; The controller is further configured to control the volume of the calibration solution injected into the solution storage device according to the second flow signal.

12. The device for online monitoring of ion removal efficiency during activation according to claim 10, characterized in that: The controller is further configured to gradually reduce the volume of the calibration liquid injected into the solution storage device by the calibration liquid adding component per unit time when the calibration liquid adding component injects the calibration liquid into the solution storage device.

13. The device for online monitoring of ion removal efficiency during activation according to any one of claims 2 to 6, characterized in that: Also includes: A second temperature control device, the second temperature control device comprising a second temperature sensor and a second water bath component, the second temperature sensor and the second water bath component are both connected to the controller; The second temperature sensor is configured to detect the temperature of the solution in the solution storage device and output a second temperature detection signal to the controller; The controller is also configured to receive the second temperature detection signal and output a second temperature control signal to the second water bath component; the second temperature control signal is used to instruct the second water bath component to heat or not heat the solution storage device so that the temperature of the solution in the temporary storage device reaches a second target temperature.

14. The device for online monitoring of ion removal efficiency during activation according to claim 2, characterized in that: The solution storage device or the temporary storage device is selected from a glass container or a metal container; The metal container comprises a coating, which covers at least the inner surface of the metal container, and the coating is selected from any one of a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating or an alkyl coating.

15. The device for online monitoring of ion removal efficiency during activation according to any one of claims 1 to 6, characterized in that: Also includes: The condensing device is configured to liquefy the gaseous water in the steam-water separation device.

16. The device for online monitoring of ion removal efficiency during activation according to any one of claims 1 to 6, characterized in that: Also includes: a stirring device configured to stir the solution in the solution storage device; The stirring device includes a coating, which at least covers the portion of the stirring device located in the solution storage device, and the coating is selected from any one of a zirconium oxide coating, a polytetrafluoroethylene coating, a polyphenylene sulfide coating, a ceramic coating or an alkyl coating.

17. The device for online monitoring of ion removal efficiency during activation according to any one of claims 1 to 6, characterized in that: The device for online monitoring of ion removal efficiency during activation comprises a first subsystem and a second subsystem, wherein the first subsystem and the second subsystem both comprise the steam-water separation device, the solution storage device and the conductivity testing device; The steam-water separation device of the first subsystem is connected to the anode gas outlet of the fuel cell, and the steam-water separation device of the second subsystem is connected to the cathode gas outlet of the fuel cell; The conductivity testing device of the first subsystem and the conductivity testing device of the second subsystem are both connected to the controller.

18. A method for online monitoring of ion removal efficiency during activation, characterized in that: A device for online monitoring of ion removal efficiency during activation as claimed in any one of claims 1 to 17, wherein the method for online monitoring of ion removal efficiency during activation comprises: Receiving a conductivity detection signal output by a conductivity testing device of the device for online monitoring of ion removal efficiency during activation; Obtaining the conductivity of the acid solution provided by the pH adjusting device of the device for online monitoring of ion removal efficiency during activation, wherein the conductivity of the acid solution is the conductivity obtained when an acid solution of equal volume to the acid solution is mixed with deionized water to a target volume at a second target temperature; and obtaining a target duration, wherein the target duration is related to the duration required for the target operating condition during the activation process of the fuel cell; Obtaining an ion concentration detection value of impurity ions in the solution according to the conductivity detection signal, the conductivity of the acid solution, and the target duration; Outputting data on the removal of the impurity ions, the data being obtained based on a plurality of ion concentration detection values ​​obtained at a plurality of time points under the target operating condition.

19. The method for online monitoring of ion removal efficiency during activation according to claim 18, characterized in that: The outputting of the data on the removal of the impurity ions includes: Among the multiple ion concentration detection values ​​arranged in chronological order, when the ion concentration detection value is less than or equal to 0 for Y consecutive times, the result data that the fuel cell has been cleaned is output; Y is a positive integer.

20. The method for online monitoring of ion removal efficiency during activation according to claim 18 or 19, characterized in that: The outputting of the data on the removal of the impurity ions includes: Output the impurity ion removal efficiency of the target time period; the impurity ion removal efficiency is the ratio of the difference between the ion concentration detection values ​​corresponding to the time points at both ends of the target time period to the duration of the target time period.

21. An electronic device, characterized in that: including memory and processor; The memory is coupled to the processor; The memory is used to store computer program code, wherein the computer program code includes computer instructions; When the processor executes the computer instructions, the electronic device performs the method for online monitoring of ion removal efficiency during activation according to any one of claims 18 to 20.

22. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, characterized in that: When the instructions are executed on an electronic device, the electronic device is caused to execute the method for online monitoring of ion removal efficiency during activation as claimed in any one of claims 18 to 20.

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