Proton exchange membrane quality assessment method, device, equipment, medium and program product

Abstract

The present application relates to a proton exchange membrane quality assessment method, device, equipment, medium and program product. The method comprises: obtaining the conductivity of multiple regions on the surface of the proton exchange membrane; determining the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the multiple regions; and evaluating the quality of the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an assessment result. The method can be used to evaluate the quality of the proton exchange membrane from two aspects: conductivity and conductivity uniformity, thereby improving the accuracy of the proton exchange membrane quality assessment.

Description

Technical Field

[0001] The present application relates to the field of measurement technology, and in particular to a proton exchange membrane quality assessment method, device, equipment, medium and program product. Background Art

[0002] Proton exchange membrane fuel cell (PEMFC) is a new energy source with high efficiency and low emissions, and has good application prospects in the field of automotive power systems. Among them, the proton exchange membrane (PEM) is the core component of PEMFC, which has the function of conducting protons. The quality of PEM has an important impact on the performance of PEMFC.

[0003] Currently, the quality of PEM is often evaluated by its conductivity. However, this evaluation method is relatively simple and has a low accuracy rate in evaluating the quality of PEM. Summary of the invention

[0004] The present application provides a proton exchange membrane quality assessment method, device, equipment, medium and program product, which can assess the quality of the proton exchange membrane from two aspects of conductivity and conductivity uniformity, thereby improving the accuracy of the proton exchange membrane quality assessment.

[0005] In a first aspect, the present application provides a method for evaluating the quality of a proton exchange membrane. The method comprises:

[0006] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0007] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0008] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0009] In one embodiment, the conductivity uniformity of the proton exchange membrane surface is determined based on the conductivity of multiple regions, including: performing calculation processing on the conductivity of multiple regions according to a preset algorithm to obtain the conductivity uniformity of the proton exchange membrane surface.

[0010] In one embodiment, obtaining the conductivity of multiple regions on the surface of the proton exchange membrane includes: obtaining a measured voltage of each region on the surface of the proton exchange membrane; and determining the conductivity of each region on the surface of the proton exchange membrane based on the measured voltage and a pre-acquired frequency response curve.

[0011] In one embodiment, the conductivity is determined based on the measured voltage and a pre-acquired frequency response curve, including: determining the characteristic frequency of the proton exchange membrane based on the frequency response curve; determining the target voltage of each region based on the characteristic frequency of the proton exchange membrane and the measured voltage of each region; and determining the conductivity of each region based on the target voltage of each region.

[0012] In one embodiment, the conductivity of each region is determined according to the target voltage of each region, including: determining the resistance of each region according to the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; and determining the conductivity of each region according to the resistance of each region.

[0013] In one embodiment, determining the characteristic frequency of the proton exchange membrane according to the frequency response curve includes: determining the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane.

[0014] In one embodiment, obtaining the measured voltage of each region on the surface of the proton exchange membrane includes: obtaining the measured voltage of each region on the surface of the proton exchange membrane in a preset solution during the process of applying current to the electrochemical instrument.

[0015] In one of the embodiments, the quality of the proton exchange membrane is evaluated based on the conductivity and the conductivity uniformity to obtain an evaluation result, including: determining the conductivity evaluation result of the proton exchange membrane based on the conductivity of each area of ​​the proton exchange membrane and a preset threshold; determining the uniformity evaluation result of the proton exchange membrane based on the conductivity uniformity of the surface of the proton exchange membrane; and determining the evaluation result of the proton exchange membrane based on the conductivity evaluation result and the uniformity evaluation result.

[0016] In a second aspect, the present application also provides a proton exchange membrane quality assessment device. The device comprises:

[0017] An acquisition module, used for acquiring the conductivity of multiple areas on the surface of the proton exchange membrane;

[0018] A determination module, for determining the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the plurality of regions;

[0019] The evaluation module is used to evaluate the quality of the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an evaluation result.

[0020] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0021] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0022] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0023] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0024] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0025] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0026] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0027] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0028] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0029] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0030] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0031] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0032] The present application provides a proton exchange membrane quality assessment method, device, equipment, medium and program product, which can measure the conductivity of multiple areas on the surface of the proton exchange membrane respectively. Then, according to the difference between the conductivity of multiple areas, the conductivity uniformity of the proton exchange membrane is determined. Finally, the quality of the proton exchange membrane is assessed according to the specific size of the conductivity of the multiple areas and the conductivity uniformity, and an assessment result is obtained. It can be seen that the present application can evaluate the quality of the proton exchange membrane from two aspects: conductivity and conductivity uniformity. Compared with a single conductivity assessment method, the present application evaluates the quality of the proton exchange membrane based on two parameters, which improves the accuracy of the proton exchange membrane quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A diagram showing an application environment of a proton exchange membrane quality assessment method in one embodiment;

[0034] Figure 2 A schematic diagram of a process for evaluating the quality of a proton exchange membrane in one embodiment;

[0035] Figure 3 A schematic diagram of the surface area of ​​a proton exchange membrane in one embodiment;

[0036] Figure 4 Another schematic diagram of a proton exchange membrane quality assessment method in one embodiment;

[0037] Figure 5 A schematic diagram of the wire connection between an electrochemical instrument and a proton exchange membrane in one embodiment;

[0038] Figure 6 Another schematic diagram of a proton exchange membrane quality assessment method in one embodiment;

[0039] Figure 7 Another schematic diagram of a proton exchange membrane quality assessment method in one embodiment;

[0040] Figure 8 Another schematic diagram of a proton exchange membrane quality assessment method in one embodiment;

[0041] Fig. 9 is a structural block diagram of a proton exchange membrane quality assessment device in one embodiment;

[0042] Fig.10 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] PEMFC has the characteristics of high efficiency and low emissions. It is a new energy source with good application prospects in the field of automotive power systems. Among them, PEM is the core component of PEMFC and has the function of conducting protons. The quality of PEM has an important influence on the performance of PEMFC.

[0045] Currently, the quality of PEM is often evaluated by its conductivity. However, this evaluation method is relatively simple and has a low accuracy rate in evaluating the quality of PEM.

[0046] Based on this, the present application provides a proton exchange membrane quality assessment method, device, equipment, medium and program product, which can evaluate the quality of the proton exchange membrane from two aspects: conductivity and conductivity uniformity, thereby improving the accuracy of the proton exchange membrane quality assessment.

[0047] The proton exchange membrane quality assessment method provided in the embodiments of the present application can be applied to Figure 1In the application environment shown. Among them, the electrochemical instrument 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. The electrochemical instrument 102 can collect conductivity-related data of the proton exchange membrane and send it to the server 104; the server 104 can perform quality assessment on the proton exchange membrane based on the conductivity-related data sent by the electrochemical instrument 102 to obtain an assessment result. Among them, the electrochemical instrument 102 can be an electrochemical instrument that can measure multiple conductivities simultaneously. The server 104 can be implemented with an independent server or a server cluster consisting of multiple servers.

[0048] In one embodiment, Figure 2 As shown, a proton exchange membrane quality assessment method is provided, and the method is applied to Figure 1 Taking the server 104 in the example as an example, the following steps are included:

[0049] S201. Obtain the conductivity of multiple areas on the surface of the proton exchange membrane.

[0050] In a specific implementation, the electrochemical instrument 102 may first measure multiple regions on the surface of the proton exchange membrane to determine the conductivity of the multiple regions on the surface of the proton exchange membrane, and then send the determined conductivity of the multiple regions to the server, so that the server can obtain the conductivity of the multiple regions on the surface of the proton exchange membrane.

[0051] The multiple regions on the surface of the proton exchange membrane are regions at multiple different positions on the surface of the proton exchange membrane, and may include multiple independent regions, multiple overlapping regions, or multiple partially overlapping regions. Figure 3 As shown, the multiple regions on the surface of the proton exchange membrane may include region A between wire a and wire b, region B between wire c and wire d, and region C between wire e and wire f, that is, including three independent regions on the surface of the proton exchange membrane; the multiple regions may also include region B between wire c and wire d, region D between wire b and wire e, and region E between wire a and wire f, that is, including three overlapping regions on the surface of the proton exchange membrane; the multiple regions may also include region A between wire a and wire b, region C between wire e and wire f, and region F between wire c and wire f. This application is not limited to this.

[0052] It should be noted that the electrical conductivity of the multiple regions on the surface of the proton exchange membrane is the electrical conductivity of the multiple regions on the surface of the proton exchange membrane at the same time.

[0053] S202. Determine the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the plurality of regions.

[0054] Since the uniformity of the conductivity on the surface of the proton exchange membrane affects the quality of the proton exchange membrane, the conductivity of multiple areas on the surface of the proton exchange membrane varies greatly, which will seriously affect the proton conduction function of the proton exchange membrane and reduce the quality of the proton exchange membrane. Therefore, the uniformity of the conductivity on the surface of the proton exchange membrane can be determined, and the quality of the proton exchange membrane can be evaluated based on the uniformity of the conductivity.

[0055] In a specific implementation, after obtaining the conductivity of multiple regions on the surface of the proton exchange membrane, the server can determine whether the conductivity of the multiple regions is similar, and then determine whether the conductivity of the surface of the proton exchange membrane is uniform. For example, the variance of the conductivity of the multiple regions can be determined, and the variance can be used as the conductivity uniformity of the surface of the proton exchange membrane; the standard deviation of the conductivity of the multiple regions can also be determined, and the standard deviation can be used as the conductivity uniformity of the surface of the proton exchange membrane. This application does not limit this.

[0056] S203, evaluating the quality of the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an evaluation result.

[0057] In a specific implementation, the server can first evaluate the conductivity and conductivity uniformity of multiple regions respectively, determine the ability of the proton exchange membrane to conduct protons, and the uniformity of the conductivity of multiple regions on the surface of the proton exchange membrane, and obtain two evaluation results. Then, the quality of the proton exchange membrane is evaluated based on the two evaluation results to determine the final evaluation result.

[0058] In a possible implementation, the server may also directly evaluate the quality of the proton exchange membrane based on the conductivity and conductivity uniformity of multiple regions on the surface of the proton exchange membrane and according to preset evaluation criteria to determine the evaluation result of the proton exchange membrane.

[0059] The proton exchange membrane quality assessment method provided in the embodiment of the present application can measure the conductivity of multiple areas on the surface of the proton exchange membrane respectively. Then, according to the difference between the conductivity of multiple areas, the conductivity uniformity of the proton exchange membrane is determined. Finally, the quality of the proton exchange membrane is assessed according to the specific size of the conductivity of the multiple areas and the conductivity uniformity to obtain an assessment result. It can be seen that the present application can assess the quality of the proton exchange membrane from two aspects: conductivity and conductivity uniformity. Compared with a single conductivity assessment method, the present application assesses the quality of the proton exchange membrane based on two parameters, thereby improving the accuracy of the proton exchange membrane quality assessment.

[0060] The above-mentioned embodiment introduces a scheme for determining the uniformity of the conductivity of the proton exchange membrane. In another embodiment of the present application, the uniformity of the conductivity can be determined according to the conductivity of multiple regions of the proton exchange membrane. For example, the above-mentioned "determining the uniformity of the conductivity of the surface of the proton exchange membrane according to the conductivity of multiple regions" may include:

[0061] The conductivity of multiple areas is processed according to a preset algorithm to obtain the conductivity uniformity of the proton exchange membrane surface.

[0062] The preset algorithm may be a variance algorithm, a standard deviation algorithm, or other algorithms that can calculate the degree of similarity between the conductivities of multiple regions (ie, the degree of uniformity of the conductivities of multiple regions). This application does not limit this.

[0063] In a specific implementation, after obtaining the conductivity of multiple areas on the surface of the proton exchange membrane, the server can call a preset algorithm to perform calculations on the conductivity of multiple areas to obtain a calculation result, which is the conductivity uniformity of the proton exchange membrane surface.

[0064] In the method provided in the embodiment of the present application, the server can perform calculations on the conductivity of multiple areas on the surface of the proton exchange membrane according to a preset algorithm to determine the conductivity uniformity of the surface of the proton exchange membrane. It can be seen that the present application can calculate the conductivity uniformity of the surface of the proton exchange membrane, that is, the present application takes into account the influence of the difference between the conductivity of different areas on the surface of the proton exchange membrane on the quality of the proton exchange membrane, and can evaluate the quality of the proton exchange membrane based on the conductivity uniformity, thereby improving the accuracy of the proton exchange membrane quality evaluation.

[0065] The above-mentioned embodiment introduces a scheme for obtaining the conductivity of multiple regions of the proton exchange membrane. In another embodiment of the present application, the conductivity of each region can be determined based on the measured voltage and frequency response curve of each region. For example, the above-mentioned "obtaining the conductivity of multiple regions on the surface of the proton exchange membrane" can include the following: Figure 4 Steps shown:

[0066] S301, obtaining measured voltages of various regions on the surface of a proton exchange membrane.

[0067] In the specific implementation, Figure 5 As shown, the electrochemical instrument can first apply a test current to the proton exchange membrane through two current wires respectively arranged at both ends of the proton exchange membrane, and then obtain the voltage response of each area on the surface of the proton exchange membrane through multiple voltage wires arranged on the surface of the proton exchange membrane, that is, the measured voltage of each area on the surface of the proton exchange membrane. The obtained measured voltage of each area on the surface of the proton exchange membrane is sent to the server.

[0068] The test current (also called AC disturbance signal) is a variable frequency AC current, i.e., an AC current with gradually increasing frequency. The measured voltage in each area is a voltage response curve, and each point on the curve is the voltage response value of the area under AC disturbance signals of different frequencies. A plurality of voltage conductors are arranged in the area between the two current conductors.

[0069] It should be noted that the water content of the proton exchange membrane has a great influence on the conductivity of the proton exchange membrane. When the proton exchange membrane is exposed to the air, its water content will gradually increase over time and it is difficult to reach saturation. As a result, the conductivity of the proton exchange membrane measured by the server at different times varies greatly. Therefore, the proton exchange membrane can be placed in a preset solution, and the electrochemical instrument can obtain the measured voltage of each area on the surface of the proton exchange membrane in the preset solution during the application of current.

[0070] Wherein, the preset solution can be water. Placing the proton exchange membrane in water can make the proton exchange membrane reach saturation at a faster speed, so that the conductivity measured after the proton exchange membrane is saturated can be stabilized, and the proton exchange membrane is quality evaluated based on the stable conductivity, and the accuracy of the evaluation result obtained is also higher. Moreover, the proton exchange membrane will swell in water, thereby increasing the effective contact area between the voltage wire and the proton exchange membrane, reducing the interface potential between the proton exchange membrane and the voltage wire, reducing the influence of the interface potential on the measured voltage, and improving the accuracy of the measured voltage obtained. In addition, as the proton exchange membrane gradually reaches saturation in water, the resistance of the proton exchange membrane is significantly reduced (can be reduced from megohm level to milliohm level or micro-ohm level), so that the entire measurement process tends to small resistance measurement, increases the measurement sensitivity, and improves the accuracy of the measured voltage.

[0071] S302 : For each area on the surface of the proton exchange membrane, determine the conductivity according to the measured voltage and the pre-acquired frequency response curve.

[0072] In a specific implementation, after obtaining the measured voltage of each region, the electrochemical instrument can draw the Bode diagram of the proton exchange membrane (which can be the phase-frequency characteristic curve of the proton exchange membrane) according to the applied AC disturbance signal and the measured voltage of each region, thereby obtaining the frequency response curve of the proton exchange membrane, and sending the frequency response curve to the server. The server can analyze and process the measured voltage of each region and the corresponding frequency response curve, thereby calculating the conductivity of each region.

[0073] The method provided in the embodiment of the present application can determine the conductivity of each area according to the measured voltage of each area on the surface of the proton exchange membrane and the frequency response curve. It can be seen that the embodiment of the present application can determine the conductivity of multiple areas on the surface of the proton exchange membrane, taking into account the influence of the difference between the conductivity of different areas on the surface of the proton exchange membrane on the quality of the proton exchange membrane, and can evaluate the quality of the proton exchange membrane based on the uniformity of conductivity, thereby improving the accuracy of the proton exchange membrane quality evaluation.

[0074] The embodiment described above introduces a scheme for determining the conductivity of each region of the proton exchange membrane based on the measured voltage and frequency response curve of each region. In another embodiment of the present application, the conductivity of each region can be determined based on the target voltage corresponding to the frequency response curve in the measured voltage of each region of the proton exchange membrane. For example, the "determining the conductivity based on the measured voltage and the pre-acquired frequency response curve" mentioned above can include the following: Figure 6 Steps shown:

[0075] S401. Determine the characteristic frequency of the proton exchange membrane according to the frequency response curve.

[0076] Among them, the characteristic frequency is the natural frequency of the proton exchange membrane.

[0077] In the specific implementation, after receiving the frequency response curves of each region of the proton exchange membrane sent by the electrochemical instrument, the server analyzes the frequency response curves of each region and determines the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane. Among them, the characteristic frequency of the proton exchange membrane is approximately in the range of 2k-4kHz.

[0078] S402: Determine the target voltage of each region according to the characteristic frequency of the proton exchange membrane and the measured voltage of each region.

[0079] In a specific implementation, after determining the characteristic frequency of the proton exchange membrane, the server can analyze the measured voltage of each area, and determine the voltage response value corresponding to the characteristic frequency point in the voltage response curve as the target voltage of each area.

[0080] S403: Determine the conductivity of each region according to the target voltage of each region.

[0081] In a specific implementation, the server can determine the conductivity of each area according to the following formula (1):

[0082]

[0083] Among them, σ represents the conductivity of each region of the proton exchange membrane; d represents the distance between the two current conductors; w represents the length of the proton exchange membrane; t represents the thickness of the proton exchange membrane; and R represents the resistance of each region of the proton exchange membrane.

[0084] Among them, the distance between the two current conductors, the length and thickness of the proton exchange membrane are known quantities. Therefore, the resistance of each region of the proton exchange membrane can be calculated first, and then the conductivity of each region of the proton exchange membrane can be calculated according to the above formula (1). Figure 7 Steps shown:

[0085] S501. Determine the resistance of each region according to the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current.

[0086] S502 : Determine the conductivity of each region according to the resistance of each region.

[0087] In a specific implementation, since the test current applied by the electrochemical instrument is an alternating current, the target voltage measured in each region is also an alternating voltage (i.e., both the test current and the target voltage are in complex form). Therefore, before calculating the resistance of each region of the proton exchange membrane, the server can first take the real part of the test current and the real part of the target voltage of each region, and then determine the quotient of the real part of the target voltage of each region and the real part of the test current as the resistance of each region. Finally, the server can calculate the conductivity of each region of the proton exchange membrane based on the resistance of each region according to the above formula (1).

[0088] The method provided in the embodiment of the present application can determine the target voltage of each region according to the characteristic frequency of the proton exchange membrane, and then determine the conductivity of each region according to the target voltage of each region and the test current. It can be seen that the embodiment of the present application can determine the conductivity of multiple regions on the surface of the proton exchange membrane, taking into account the influence of the difference between the conductivity of different regions on the surface of the proton exchange membrane on the quality of the proton exchange membrane, and can evaluate the quality of the proton exchange membrane based on the uniformity of conductivity, thereby improving the accuracy of the proton exchange membrane quality evaluation.

[0089] The above-mentioned embodiment introduces a scheme for determining the quality evaluation result of the proton exchange membrane according to the conductivity and the conductivity uniformity. In another embodiment of the present application, the quality evaluation result of the proton exchange membrane can be determined according to the evaluation result of the conductivity of the proton exchange membrane and the evaluation result of the conductivity uniformity. For example, the above-mentioned "performing a quality evaluation of the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an evaluation result" may include the following: Figure 8 Steps shown:

[0090] S601 . Determine a conductivity evaluation result of the proton exchange membrane according to the conductivity of each region of the proton exchange membrane and a preset threshold.

[0091] In a specific implementation, after calculating the conductivity of each region of the proton exchange membrane, the server can analyze and evaluate the conductivity of each region, and determine the conductivity evaluation result of the proton exchange membrane according to the specific size of the conductivity of each region. For example, the server can first compare the conductivity of each region with a preset threshold value to determine the number of regions with a conductivity greater than the preset threshold value. If the number of regions with a conductivity greater than the preset threshold value is greater than or equal to the preset number, the conductivity evaluation result of the proton exchange membrane is determined to be excellent; if the number of regions with a conductivity greater than the preset threshold value is less than the preset number, the conductivity evaluation result of the proton exchange membrane is determined to be poor.

[0092] In a possible implementation, multiple quantity thresholds can also be set to divide the conductivity evaluation result of the proton exchange membrane into multiple levels. For example, two quantity thresholds are set, namely a first preset number and a second preset number. The first preset number is greater than the second preset number. If the number of regions with conductivity greater than the preset threshold is higher than or equal to the first preset number, the conductivity evaluation result of the proton exchange membrane is determined to be excellent; if the number of regions with conductivity greater than the preset threshold is lower than the first preset number and higher than or equal to the second preset number, the conductivity evaluation result of the proton exchange membrane is determined to be good; if the number of regions with conductivity greater than the preset threshold is lower than the second preset number, the conductivity evaluation result of the proton exchange membrane is determined to be poor.

[0093] S602: Determine a uniformity evaluation result of the proton exchange membrane according to the uniformity of the conductivity of the proton exchange membrane surface.

[0094] In a specific implementation, after calculating the conductivity uniformity of the proton exchange membrane, the server can analyze and evaluate the conductivity uniformity of each region, and determine the uniformity evaluation result of the proton exchange membrane according to the specific size of the conductivity uniformity of each region. For example, the server can first compare the conductivity uniformity with a preset uniformity threshold. If the conductivity uniformity is less than the preset uniformity threshold, the uniformity evaluation result of the proton exchange membrane is determined to be excellent; if the conductivity uniformity is greater than the preset uniformity threshold, the uniformity evaluation result of the proton exchange membrane is determined to be poor.

[0095] In a possible implementation, multiple uniformity thresholds may be set to divide the uniformity evaluation result of the proton exchange membrane into multiple levels. For example, two uniformity thresholds are set, namely, a first preset uniformity and a second preset uniformity. The first preset uniformity is less than the second preset uniformity. If the conductivity uniformity is less than or equal to the first preset uniformity, the uniformity evaluation result of the proton exchange membrane is determined to be excellent; if the conductivity uniformity is greater than the first preset uniformity and less than or equal to the second preset uniformity, the uniformity evaluation result of the proton exchange membrane is determined to be good; if the conductivity uniformity is greater than the second preset uniformity, the uniformity evaluation result of the proton exchange membrane is determined to be poor.

[0096] S603 , determining the evaluation result of the proton exchange membrane according to the conductivity evaluation result and the uniformity evaluation result.

[0097] In the specific implementation, after determining the conductivity evaluation result and uniformity evaluation result of the proton exchange membrane, the server analyzes the two evaluation results respectively and determines the evaluation result of the proton exchange membrane according to the preset standard. For example, if the conductivity evaluation result and uniformity evaluation result of the proton exchange membrane are both excellent, the evaluation result of the proton exchange membrane is determined to be excellent; if one of the conductivity evaluation result and uniformity evaluation result of the proton exchange membrane is excellent, the evaluation result of the proton exchange membrane is determined to be good; if the conductivity evaluation result and uniformity evaluation result of the proton exchange membrane are both poor, the evaluation result of the proton exchange membrane is determined to be poor.

[0098] The method provided in the embodiment of the present application can evaluate the conductivity uniformity of the proton exchange membrane and the conductivity of each region respectively, obtain the uniformity evaluation result and the conductivity evaluation result, and then determine the evaluation result of the proton exchange membrane according to the uniformity evaluation result and the conductivity evaluation result. It can be seen that the present application can evaluate the quality of the proton exchange membrane from two aspects: conductivity and conductivity uniformity. Compared with a single conductivity evaluation method, the present application evaluates the quality of the proton exchange membrane based on two parameters, thereby improving the accuracy of the proton exchange membrane quality evaluation.

[0099] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0100] Based on the same inventive concept, the embodiment of the present application also provides a proton exchange membrane quality assessment device for implementing the above-mentioned proton exchange membrane quality assessment method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in the one or more proton exchange membrane quality assessment device embodiments provided below can refer to the limitations of the proton exchange membrane quality assessment method above, and will not be repeated here.

[0101] In one embodiment, Fig. 9As shown, a proton exchange membrane quality assessment device is provided, comprising: an acquisition module, a determination module and an assessment module, wherein:

[0102] An acquisition module 701 is used to acquire the conductivity of multiple areas on the surface of the proton exchange membrane;

[0103] A determination module 702 is used to determine the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of multiple regions;

[0104] The evaluation module 703 is used to evaluate the quality of the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an evaluation result.

[0105] In one embodiment, the determination module 702 is specifically configured to perform calculation processing on the conductivity of multiple regions according to a preset algorithm to obtain the conductivity uniformity of the surface of the proton exchange membrane.

[0106] In one embodiment, the acquisition module 701 is specifically used to acquire the measured voltage of each area on the surface of the proton exchange membrane; for each area on the surface of the proton exchange membrane, the conductivity is determined according to the measured voltage and the pre-acquired frequency response curve.

[0107] In one embodiment, the acquisition module 701 is further used to determine the characteristic frequency of the proton exchange membrane according to the frequency response curve; determine the target voltage of each area according to the characteristic frequency of the proton exchange membrane and the measured voltage of each area; and determine the conductivity of each area according to the target voltage of each area.

[0108] In one embodiment, the acquisition module 701 is also used to determine the resistance of each region according to the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; and the conductivity of each region is determined according to the resistance of each region.

[0109] In one embodiment, the acquisition module 701 is further used to determine the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane.

[0110] In one embodiment, the acquisition module 701 is further used to acquire the measured voltage of each area on the surface of the proton exchange membrane in the preset solution during the process of applying current to the electrochemical instrument.

[0111] In one embodiment, the evaluation module 703 is specifically used to determine the conductivity evaluation result of the proton exchange membrane according to the conductivity of each area of ​​the proton exchange membrane and a preset threshold; determine the uniformity evaluation result of the proton exchange membrane according to the conductivity uniformity of the surface of the proton exchange membrane; and determine the evaluation result of the proton exchange membrane according to the conductivity evaluation result and the uniformity evaluation result.

[0112] Each module in the above-mentioned proton exchange membrane quality assessment device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0113] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig.10 As shown. The computer device includes a processor, a memory and a network interface connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store some data related to the proton exchange membrane quality assessment method described in the embodiment of the present application, for example, the conductivity, conductivity uniformity and assessment results of the proton exchange membrane in the multiple regions described above. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a proton exchange membrane quality assessment method is implemented.

[0114] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0115] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0116] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0117] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0118] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0119] In one embodiment, when the processor executes the computer program, the following steps are also implemented: the conductivity of multiple regions is processed according to a preset algorithm to obtain the conductivity uniformity of the surface of the proton exchange membrane.

[0120] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining the measured voltage of each area on the surface of the proton exchange membrane; for each area on the surface of the proton exchange membrane, determining the conductivity according to the measured voltage and the pre-acquired frequency response curve.

[0121] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining the characteristic frequency of the proton exchange membrane according to the frequency response curve; determining the target voltage of each area according to the characteristic frequency of the proton exchange membrane and the measured voltage of each area; and determining the conductivity of each area according to the target voltage of each area.

[0122] In one embodiment, when the processor executes the computer program, the following steps are also implemented: the resistance of each region is determined according to the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; and the conductivity of each region is determined according to the resistance of each region.

[0123] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane.

[0124] In one embodiment, when the processor executes the computer program, the following steps are also implemented: when the electrochemical instrument applies current, the measured voltage of each area on the surface of the proton exchange membrane in the preset solution is obtained.

[0125] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining a conductivity evaluation result of the proton exchange membrane based on the conductivity of each area of ​​the proton exchange membrane and a preset threshold; determining a uniformity evaluation result of the proton exchange membrane based on the uniformity of the conductivity on the surface of the proton exchange membrane; and determining an evaluation result of the proton exchange membrane based on the conductivity evaluation result and the uniformity evaluation result.

[0126] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0127] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0128] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0129] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0130] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the conductivity of multiple regions is processed according to a preset algorithm to obtain the conductivity uniformity of the surface of the proton exchange membrane.

[0131] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the measured voltage of each area on the surface of the proton exchange membrane; for each area on the surface of the proton exchange membrane, determining the conductivity according to the measured voltage and the pre-acquired frequency response curve.

[0132] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining the characteristic frequency of the proton exchange membrane according to the frequency response curve; determining the target voltage of each region according to the characteristic frequency of the proton exchange membrane and the measured voltage of each region; and determining the conductivity of each region according to the target voltage of each region.

[0133] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the resistance of each region is determined based on the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; and the conductivity of each region is determined based on the resistance of each region.

[0134] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane.

[0135] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when the electrochemical instrument applies current, the measured voltage of each area on the surface of the proton exchange membrane in the preset solution is obtained.

[0136] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a conductivity evaluation result of the proton exchange membrane based on the conductivity of each area of ​​the proton exchange membrane and a preset threshold; determining a uniformity evaluation result of the proton exchange membrane based on the uniformity of the conductivity on the surface of the proton exchange membrane; and determining an evaluation result of the proton exchange membrane based on the conductivity evaluation result and the uniformity evaluation result.

[0137] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0138] Obtain the conductivity of multiple regions on the surface of the proton exchange membrane;

[0139] Determining the conductivity uniformity of the surface of the proton exchange membrane based on the conductivity of the plurality of regions;

[0140] The quality of the proton exchange membrane is evaluated according to the conductivity and conductivity uniformity, and an evaluation result is obtained.

[0141] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the conductivity of multiple regions is processed according to a preset algorithm to obtain the conductivity uniformity of the surface of the proton exchange membrane.

[0142] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the measured voltage of each area on the surface of the proton exchange membrane; for each area on the surface of the proton exchange membrane, determining the conductivity according to the measured voltage and the pre-acquired frequency response curve.

[0143] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining the characteristic frequency of the proton exchange membrane according to the frequency response curve; determining the target voltage of each region according to the characteristic frequency of the proton exchange membrane and the measured voltage of each region; and determining the conductivity of each region according to the target voltage of each region.

[0144] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the resistance of each region is determined based on the target voltage of each region and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; and the conductivity of each region is determined based on the resistance of each region.

[0145] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the frequency corresponding to the intersection of the frequency response curve and the frequency axis as the characteristic frequency of the proton exchange membrane.

[0146] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when the electrochemical instrument applies current, the measured voltage of each area on the surface of the proton exchange membrane in the preset solution is obtained.

[0147] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a conductivity evaluation result of the proton exchange membrane based on the conductivity of each area of ​​the proton exchange membrane and a preset threshold; determining a uniformity evaluation result of the proton exchange membrane based on the uniformity of the conductivity on the surface of the proton exchange membrane; and determining an evaluation result of the proton exchange membrane based on the conductivity evaluation result and the uniformity evaluation result.

[0148] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0149] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0150] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A proton exchange membrane quality assessment method, characterized in that: The method comprises: Obtaining the conductivity of multiple regions on the surface of the proton exchange membrane; the multiple regions include at least one of multiple regions at different positions, multiple independent regions, multiple overlapping regions, and multiple partially overlapping regions; Determining the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the plurality of regions; Performing a quality assessment on the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an assessment result; The obtaining of the conductivity of multiple regions on the surface of the proton exchange membrane comprises: Obtaining measured voltages at various regions on the surface of the proton exchange membrane; For each area on the surface of the proton exchange membrane, determining the conductivity according to the measured voltage and a pre-acquired frequency response curve; The determining the conductivity according to the measured voltage and a pre-acquired frequency response curve includes: Determining the characteristic frequency of the proton exchange membrane according to the frequency response curve; Determining a target voltage for each of the regions according to a characteristic frequency of the proton exchange membrane and a measured voltage for each of the regions; determining the conductivity of each of the regions according to the target voltage of each of the regions; Determining the conductivity of each of the regions according to the target voltage of each of the regions comprises: Determining the resistance of each of the regions according to the target voltage of each of the regions and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; The conductivity of each of the regions is determined based on the resistance of each of the regions.

2. The method according to claim 1, characterized in that Determining the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the plurality of regions includes: The conductivity of the plurality of regions is processed by calculation according to a preset algorithm to obtain the conductivity uniformity of the surface of the proton exchange membrane.

3. The method according to claim 1, characterized in that Determining the characteristic frequency of the proton exchange membrane according to the frequency response curve includes: The frequency corresponding to the intersection of the frequency response curve and the frequency axis is determined as the characteristic frequency of the proton exchange membrane.

4. The method according to claim 1, characterized in that: The obtaining of the measured voltages of various regions on the surface of the proton exchange membrane comprises: When the electrochemical instrument applies current, the measured voltage of each area on the surface of the proton exchange membrane in the preset solution is obtained.

5. The method according to claim 1, characterized in that The method of performing quality assessment on the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an assessment result includes: Determining a conductivity evaluation result of the proton exchange membrane according to the conductivity of each area of ​​the proton exchange membrane and a preset threshold; Determining a uniformity evaluation result of the proton exchange membrane according to the uniformity of the conductivity of the surface of the proton exchange membrane; An evaluation result of the proton exchange membrane is determined based on the conductivity evaluation result and the uniformity evaluation result.

6. A proton exchange membrane quality assessment device, characterized in that: The device comprises: An acquisition module, used to acquire the conductivity of multiple regions on the surface of the proton exchange membrane; the multiple regions include at least one of multiple regions at different positions, multiple independent regions, multiple overlapping regions and multiple partially overlapping regions; A determination module, configured to determine the conductivity uniformity of the surface of the proton exchange membrane according to the conductivity of the plurality of regions; An evaluation module, used for performing a quality evaluation on the proton exchange membrane according to the conductivity and the conductivity uniformity to obtain an evaluation result; Wherein, the acquisition module is also used to obtain the measured voltage of each area on the surface of the proton exchange membrane; For each area on the surface of the proton exchange membrane, determining the conductivity according to the measured voltage and a pre-acquired frequency response curve; Determining the characteristic frequency of the proton exchange membrane according to the frequency response curve; Determining a target voltage for each of the regions according to a characteristic frequency of the proton exchange membrane and a measured voltage for each of the regions; determining the conductivity of each of the regions according to the target voltage of each of the regions; Determining the resistance of each of the regions according to the target voltage of each of the regions and the test current applied by the electrochemical instrument; the test current is a variable frequency alternating current; The conductivity of each of the regions is determined based on the resistance of each of the regions.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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