Membrane electrode frame durability evaluation method and device and electronic equipment

Abstract

The invention provides a membrane electrode frame durability evaluation method and device and electronic equipment, and relates to the technical field of fuel cell design, and the method comprises the steps: carrying out a durability test on a membrane electrode frame, and respectively obtaining a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test; determining a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness; and evaluating the durability of the membrane electrode frame according to the durability thickness retention rate of the membrane electrode frame so as to relieve the technical problem that durability evaluation of the membrane electrode frame in the prior art cannot meet actual application requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell design, and in particular to a membrane electrode frame durability evaluation method, device and electronic equipment. Background Art

[0002] The membrane electrode frame supports and seals the catalyst-coated membrane (CCM), facilitates the operation of the CCM by production equipment, and constructs water and gas channels together with the electrode plates. The durability of the membrane electrode frame directly affects the performance of the membrane electrode.

[0003] As the capacity of the battery stack continues to increase, the requirements for temperature and pressure continue to increase. The resin under high temperature and high pressure will become softer and more unstable, and the thickness of the frame will be prone to change. At the same time, the increase in the capacity of the battery stack makes the inoperability of the frame thickness tolerance gradually increase; however, during vehicle driving, due to the influence of force majeure factors such as vibration, the uniformity requirements of the single-piece membrane electrode are higher, so the current durability evaluation of the membrane electrode frame cannot meet the actual application requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a membrane electrode frame durability evaluation method, device and electronic equipment to alleviate the technical problem in the prior art that the durability evaluation of the membrane electrode frame cannot meet the requirements of actual applications.

[0005] In a first aspect, an embodiment of the present invention provides a membrane electrode frame durability evaluation method, comprising:

[0006] Performing a durability test on the membrane electrode frame to obtain a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test;

[0007] Determining a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness;

[0008] The durability of the membrane electrode frame is evaluated according to the durable thickness retention rate of the membrane electrode frame.

[0009] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the steps of performing a durability test on a membrane electrode frame and obtaining a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test respectively include:

[0010] Prepare a membrane electrode frame according to business requirements, and measure a first thickness of the membrane electrode frame;

[0011] A durability test is performed on the membrane electrode frame to obtain a second thickness of the membrane electrode frame after the durability test.

[0012] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the step of preparing a membrane electrode frame according to business requirements and measuring a first thickness of the membrane electrode frame includes:

[0013] Prepare membrane electrode frames that meet business requirements by lamination;

[0014] Selecting a preset number of sampling points at the target positions in the horizontal and vertical directions of the membrane electrode frame, respectively, and measuring the sampling thickness of the membrane electrode frame corresponding to each sampling point;

[0015] Based on the average value of each of the sampled thicknesses, a first thickness of the membrane electrode frame is determined.

[0016] In combination with the first aspect, an embodiment of the present invention provides a third possible implementation of the first aspect, wherein the step of determining the durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness includes:

[0017] The durable thickness retention rate of the membrane electrode frame is determined based on the ratio of the second thickness of the membrane electrode frame after the durability test to the first thickness before the durability test.

[0018] In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the step of preparing a membrane electrode frame according to business requirements and measuring a first thickness of the membrane electrode frame includes:

[0019] Prepare membrane electrode frames that meet business requirements by lamination;

[0020] A preset number of sampling points are selected at the target positions in the transverse and longitudinal directions of the membrane electrode frame, and the first thickness of the membrane electrode frame corresponding to each sampling point is measured to determine the first thickness of the membrane electrode frame.

[0021] In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the step of determining the durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness includes:

[0022] Obtaining a thickness retention rate at each transverse and / or longitudinal sampling point of the membrane electrode frame according to a ratio of the second thickness to the first thickness corresponding to each transverse and / or longitudinal sampling point;

[0023] Based on the thickness retention rate of each sampling point in the transverse direction and / or the longitudinal direction, an average value and a standard deviation of the thickness retention rate in the transverse direction and / or the longitudinal direction of the membrane electrode frame are determined.

[0024] In combination with the first aspect, the embodiment of the present invention provides a sixth possible implementation of the first aspect, wherein the step of evaluating the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame includes:

[0025] Based on the comparison results of the average thickness retention rate in the horizontal and / or vertical direction with the preset thickness retention rate threshold, and the comparison results of the standard deviation in the horizontal and / or vertical direction with the preset standard deviation threshold, the durability of the membrane electrode frame is evaluated.

[0026] In a second aspect, an embodiment of the present invention further provides a membrane electrode frame durability evaluation device, comprising:

[0027] An acquisition module performs a durability test on the membrane electrode frame to respectively acquire a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test;

[0028] A determination module, which determines a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness;

[0029] An evaluation module evaluates the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame.

[0030] In a third aspect, an embodiment provides an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the method described in any of the aforementioned implementation methods are implemented.

[0031] In a fourth aspect, an embodiment provides a machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to implement the steps of the method described in any one of the aforementioned implementations.

[0032] The embodiments of the present invention provide a membrane electrode frame durability evaluation method, device and electronic device. The first thickness of the membrane electrode frame before the durability test and the second thickness after the durability test are measured respectively, and the second thickness and the first thickness are calculated to determine a durability thickness retention rate that can characterize the state change of the membrane electrode frame before and after the durability. Based on the durability thickness retention rate, the durability of the membrane electrode frame can be evaluated, and the problem of low performance of the entire stack caused by poor uniformity of the membrane electrode frame can be avoided simply and accurately from the battery development and design stage.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of a sealing frame film structure provided by an embodiment of the present invention;

[0037] Figure 2 One of the schematic diagrams of the application state of the membrane electrode frame provided by the embodiment of the present invention in a single cell;

[0038] Figure 3 The second schematic diagram of the application state of the membrane electrode frame provided by the embodiment of the present invention in a single cell;

[0039] Figure 4 The third schematic diagram of the application state of the membrane electrode frame in a single cell provided by an embodiment of the present invention;

[0040] Figure 5 A flow chart of a membrane electrode frame durability evaluation method provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of functional modules of a membrane electrode frame durability evaluation device provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the hardware architecture of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The main function of the frame film is to support the catalyst layer and completely seal the bipolar plate. The frame film is mainly composed of a substrate (PEN / PET / PI, etc.) and an adhesive layer. The substrate is set on the upper and lower sides of the adhesive layer. Figure 1 As shown. In the frame durability test, the adhesive layer is easily thinned and decomposed by the environment, resulting in changes in the thickness of the frame film. Changes in the thickness of the frame film directly affect the thickness and sealing effect of the single cell, causing uneven pressure or even leakage, and directly affecting the performance of the battery stack. In practical applications, refer to Figure 2 It can be seen that bipolar plates are arranged on the upper and lower sides of the frame film, and the frame film maintains a certain thickness, which is the ideal state of the membrane electrode frame in the single cell; if the frame film of the membrane electrode frame becomes thinner as a whole, its sealing effect becomes worse, such as Figure 3 as shown; or Figure 4 As shown, the bonding layer of the frame film is deformed, and the membrane electrode frame in the single cell will block the flow channel and cause uneven pressure.

[0045] Traditional durability testing methods for membrane electrode frames mainly include high-temperature water boiling test, high-temperature acid boiling test, high-temperature coolant test and high and low temperature cycle test, which mainly evaluate the sealing effect and appearance of the frame after durability.

[0046] However, the inventors have found that the traditional durability test method only evaluates the sealing effect and appearance of the frame, but does not evaluate the thickness of the frame after durability. The thickness of the membrane electrode frame will change during the durability test, and the change in thickness directly affects the thickness and sealing effect of the entire stack, and directly affects the performance of the stack.

[0047] Based on this, an embodiment of the present invention provides a membrane electrode frame durability evaluation method, device and electronic device, which evaluates the durability of the membrane electrode frame by testing the membrane electrode frame thickness retention rate, thereby avoiding the problem of low performance of the entire stack caused by poor uniformity of the membrane electrode frame from the material development end.

[0048] To facilitate understanding of this embodiment, a membrane electrode frame durability evaluation method disclosed in an embodiment of the present invention is first introduced in detail. This method can be applied to the fuel cell design stage and can be executed by intelligent control devices such as controllers, host computers, and servers.

[0049] Figure 5 A flow chart of a membrane electrode frame durability evaluation method provided in an embodiment of the present invention.

[0050] Reference Figure 5 , the method may include the following steps:

[0051] Step S102: Perform a durability test on the membrane electrode frame to obtain a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test.

[0052] Here, a membrane electrode frame is prepared as required, and a first thickness of the membrane electrode frame before a durability test and a second thickness of the membrane electrode frame after the durability test are measured.

[0053] Step S104: determining the durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness.

[0054] Among them, the durable thickness retention rate can be understood as the thickness change state of the membrane electrode frame before and after the durability test.

[0055] Step S106, evaluating the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame.

[0056] It should be noted that the durability of the membrane electrode frame can be evaluated based on the thickness retention rate of the membrane electrode frame before and after durability.

[0057] In a preferred embodiment of actual application, the first thickness of the membrane electrode frame before the durability test and the second thickness after the durability test can be measured respectively, and the second thickness and the first thickness are calculated to determine the durability thickness retention rate that can characterize the state change of the membrane electrode frame before and after the durability. Based on the durability thickness retention rate, the durability of the membrane electrode frame can be evaluated, and the problem of low performance of the entire stack caused by poor uniformity of the membrane electrode frame can be avoided simply and accurately from the battery development and design stage.

[0058] In some embodiments, after the membrane electrode frame is prepared according to business requirements, the thickness before and after the durability test is measured respectively; illustratively, step S102 may include:

[0059] Step 1.1), prepare a membrane electrode frame according to business requirements, and measure a first thickness of the membrane electrode frame.

[0060] It can be understood that the first thickness is the thickness of the membrane electrode frame that meets business requirements before the durability test.

[0061] Step 1.2), performing a durability test on the membrane electrode frame to obtain a second thickness of the membrane electrode frame after the durability test.

[0062] Among them, the membrane electrode frame includes but is not limited to a single-layer frame, a double-layer frame or a four-layer frame structure; the adhesive layer of the membrane electrode frame is a polymer resin glue, including but not limited to hot melt glue, pressure sensitive glue or thermosetting glue.

[0063] In some embodiments, step 1.1) can be achieved by the following steps:

[0064] Step 1.1.1), prepare a membrane electrode frame that meets business requirements by pressing.

[0065] Here, the membrane electrode frame can be prepared by pressing, and the specific pressing method includes but is not limited to high temperature, high pressure or normal temperature and high pressure, using a flat plate, vacuum or roller pressing method to complete the lamination; after pressing, the membrane electrode frame can also be cut into a target membrane electrode frame of 50×50mm in the horizontal and vertical directions.

[0066] Step 1.1.2), select a preset number of sampling points at the target positions in the horizontal and vertical directions of the membrane electrode frame, and measure the sampling thickness of the membrane electrode frame corresponding to each sampling point.

[0067] The thickness of the target membrane electrode frame is measured by point testing. The target positions of a preset number of sampling points are determined at equal intervals in the longitudinal (Machine Direction, MD) and transverse (Transverse Direction, TD) directions. The preset number can be 3, 5, 8, etc., and can be adjusted according to the transverse and longitudinal dimensions of the membrane electrode frame. 5 is preferred. This method for measuring the thickness of the membrane electrode frame is a thin film micron-level measurement with an accuracy of ±1μm.

[0068] Step 1.1.3), determining the first thickness of the membrane electrode frame based on the average value of each sampled thickness.

[0069] As an optional embodiment, the sampling thicknesses of the various sampling points may be averaged to determine the first thickness of the membrane electrode frame.

[0070] Based on the above-mentioned embodiment, the method for determining the durable thickness retention rate in step S106 includes:

[0071] Step 2.1), determining the durable thickness retention rate of the membrane electrode frame based on the ratio of the second thickness of the membrane electrode frame after the durability test to the first thickness before the durability test.

[0072] The thickness of the membrane electrode frame is measured before the durability test, and the first thickness is recorded as Tb. The membrane electrode frame is subjected to the durability test; the thickness of the membrane electrode frame after the durability test is measured, and the second thickness is recorded as Ta; the membrane electrode frame durable thickness retention rate = Ta / Tb×100%. The membrane electrode frame durable thickness retention rate is compared with the thickness retention rate threshold, and the durability of the membrane electrode frame is evaluated according to the comparison result; if it exceeds the threshold, the membrane electrode frame durability is qualified, otherwise it does not exceed the threshold, and the membrane electrode frame durability is unqualified.

[0073] In some embodiments, the membrane electrode frame durability test in step S102 may include a high-temperature water boiling test, a high-temperature acid boiling test, a high-temperature coolant test and a high and low temperature cycle test; illustratively, the membrane electrode frame high-temperature water boiling test temperature is 90-95°C, and the time is more than 1000 hours; the membrane electrode frame high-temperature acid boiling test temperature is 90-95°C, pH=0-2, and the time is more than 1000 hours; the membrane electrode frame high-temperature coolant test temperature is 90-95°C, and the time is more than 1000 hours; the membrane electrode frame high and low temperature cycle test low temperature range is -50 to -20°C, high temperature range is 100 to 130°C, high and low temperatures are maintained for 2 hours each, and more than 10 cycles.

[0074] As another optional embodiment, step S102 may also be implemented by the following steps, including:

[0075] Step a, preparing a membrane electrode frame that meets business requirements by lamination;

[0076] Step b: Selecting a preset number of sampling points at the target positions in the horizontal and vertical directions of the membrane electrode frame, respectively, measuring the first thickness of the membrane electrode frame corresponding to each sampling point, and determining the first thickness of the membrane electrode frame.

[0077] It can be understood that the embodiment of the present invention measures the first thickness of each sampling point respectively. On this basis, the durable thickness retention rate of the membrane electrode frame can be determined according to the first thickness and the second thickness of each sampling point before and after the durability test, including:

[0078] Step 3.1), according to the ratio of the second thickness to the first thickness corresponding to each sampling point in the horizontal direction and / or the vertical direction of the membrane electrode frame, obtain the thickness retention rate of each sampling point in the horizontal direction and / or the vertical direction.

[0079] Here, the ratio of the first thickness and the second thickness before and after the durability test of each sampling point is calculated to determine the thickness retention rate of each sampling point.

[0080] Step 3.2), based on the thickness retention rate of each sampling point in the horizontal and / or vertical direction, determine the average value and standard deviation of the thickness retention rate in the horizontal and / or vertical direction of the membrane electrode frame.

[0081] According to the thickness retention rate of each sampling point in the aforementioned step, the average value and standard deviation of the thickness retention rate in the horizontal direction and / or the vertical direction are calculated respectively according to the horizontal direction or the vertical direction to which each sampling point belongs.

[0082] On this basis, the durability of the membrane electrode frame is evaluated based on the average value and standard deviation of the thickness retention rate of the membrane electrode frame in the horizontal and / or vertical directions, including:

[0083] Step 4.1), based on the comparison results of the average thickness retention rate in the horizontal and / or vertical direction with the preset thickness retention rate threshold, and the comparison results of the standard deviation in the horizontal and / or vertical direction with the preset standard deviation threshold, the durability of the membrane electrode frame is evaluated.

[0084] The durability evaluation criteria of the membrane electrode frame here are the average value and standard deviation of the thickness retention rate, that is, the larger the average value of the thickness retention rate of the membrane electrode frame in the horizontal and vertical directions, the smaller the frame thickness loss and the better the durability; the smaller the standard deviation of the thickness retention rate, the better the thickness uniformity and the better the durability.

[0085] The embodiment of the present invention tests the membrane electrode frame thickness retention rate to evaluate the durability of the membrane electrode frame, which can avoid the problem of low overall stack performance caused by poor uniformity of the membrane electrode frame during the battery design and development stage.

[0086] like Figure 6 As shown, an embodiment of the present invention provides a membrane electrode frame durability evaluation device, comprising:

[0087] An acquisition module performs a durability test on the membrane electrode frame to respectively acquire a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test;

[0088] A determination module, which determines a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness;

[0089] An evaluation module evaluates the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame.

[0090] In some embodiments, the acquisition module is further specifically used to prepare a membrane electrode frame according to business requirements, measure a first thickness of the membrane electrode frame; perform a durability test on the membrane electrode frame, and obtain a second thickness of the membrane electrode frame after the durability test.

[0091] In some embodiments, the acquisition module is also specifically used to prepare a membrane electrode frame that meets business requirements by pressing; select a preset number of sampling points at the target positions in the horizontal and vertical directions of the membrane electrode frame, and measure the sampling thickness of the membrane electrode frame corresponding to each sampling point; and determine the first thickness of the membrane electrode frame based on the average value of each sampling thickness.

[0092] In some embodiments, the determination module is further specifically used to determine the durable thickness retention rate of the membrane electrode frame based on the ratio of the second thickness of the membrane electrode frame after the durability test to the first thickness before the durability test.

[0093] In some embodiments, the acquisition module is also specifically used to prepare a membrane electrode frame that meets business requirements by pressing; select a preset number of sampling points at the horizontal and vertical target positions of the membrane electrode frame, respectively, and measure the first thickness of the membrane electrode frame corresponding to each of the sampling points to determine the first thickness of the membrane electrode frame.

[0094] In some embodiments, the determination module is also specifically used to obtain the thickness retention rate of each sampling point in the horizontal and / or vertical direction of the membrane electrode frame according to the ratio of the second thickness to the first thickness corresponding to each sampling point in the horizontal and / or vertical direction of the membrane electrode frame; based on the thickness retention rate of each sampling point in the horizontal and / or vertical direction, determine the average value and standard deviation of the thickness retention rate in the horizontal and / or vertical direction of the membrane electrode frame.

[0095] In some embodiments, the evaluation module is further specifically used to evaluate the durability of the membrane electrode frame based on the comparison results of the average thickness retention rate in the horizontal and / or vertical direction with the preset thickness retention rate threshold, and the comparison results of the standard deviation in the horizontal and / or vertical direction with the preset standard deviation threshold.

[0096] An embodiment of the present invention provides an electronic device for implementing an electronic device. In this embodiment, the electronic device may be, but is not limited to, a personal computer (PC), a laptop computer, a monitoring device, a server, or other computer device with analysis and processing capabilities.

[0097] As an exemplary embodiment, see Figure 7 The electronic device 110 includes a communication interface 111, a processor 112, a memory 113 and a bus 114. The processor 112, the communication interface 111 and the memory 113 are connected via the bus 114. The memory 113 is used to store a computer program that supports the processor 112 to execute the method. The processor 112 is configured to execute the program stored in the memory 113.

[0098] The machine-readable storage medium mentioned in this article can be any electronic, magnetic, optical or other physical storage device that can contain or store information, such as executable instructions, data, etc. For example, the machine-readable storage medium can be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (such as hard disk drive), any type of storage disk (such as CD, DVD, etc.), or similar storage medium, or a combination thereof.

[0099] The non-volatile medium may be a non-volatile memory, a flash memory, a storage drive (such as a hard drive), any type of storage disk (such as a CD, DVD, etc.), or a similar non-volatile storage medium, or a combination thereof.

[0100] It can be understood that the specific operation methods of each functional module in this embodiment can refer to the detailed description of the corresponding steps in the above method embodiment, and will not be repeated here.

[0101] The computer-readable storage medium provided in the embodiment of the present invention stores a computer program. When the computer program code is executed, the method described in any of the above embodiments can be implemented. For specific implementation, please refer to the method embodiment, which will not be described in detail here.

[0102] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0103] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0104] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0105] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily conceive of changes, or make equivalent replacements for some of the technical features therein. Such modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A membrane electrode frame durability evaluation method, characterized in that: include: Performing a durability test on the membrane electrode frame to obtain a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test; Determining a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness; The durability of the membrane electrode frame is evaluated according to the durable thickness retention rate of the membrane electrode frame.

2. The method according to claim 1, characterized in that The steps of performing a durability test on the membrane electrode frame and obtaining a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test respectively include: Prepare a membrane electrode frame according to business requirements, and measure a first thickness of the membrane electrode frame; A durability test is performed on the membrane electrode frame to obtain a second thickness of the membrane electrode frame after the durability test.

3. The method according to claim 2, characterized in that The steps of preparing a membrane electrode frame according to business requirements and measuring a first thickness of the membrane electrode frame include: Prepare membrane electrode frames that meet business needs by lamination; Selecting a preset number of sampling points at the target positions in the horizontal and vertical directions of the membrane electrode frame, respectively, and measuring the sampling thickness of the membrane electrode frame corresponding to each sampling point; Based on the average value of each of the sampled thicknesses, a first thickness of the membrane electrode frame is determined.

4. The method according to claim 3, characterized in that The step of determining the durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness includes: The durable thickness retention rate of the membrane electrode frame is determined based on the ratio of the second thickness of the membrane electrode frame after the durability test to the first thickness before the durability test.

5. The method according to claim 2, characterized in that: The steps of preparing a membrane electrode frame according to business requirements and measuring a first thickness of the membrane electrode frame include: Prepare membrane electrode frames that meet business needs by lamination; A preset number of sampling points are selected at the target positions in the transverse and longitudinal directions of the membrane electrode frame, and the first thickness of the membrane electrode frame corresponding to each sampling point is measured to determine the first thickness of the membrane electrode frame.

6. The method according to claim 5, characterized in that The step of determining the durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness includes: Obtaining a thickness retention rate at each transverse and / or longitudinal sampling point of the membrane electrode frame according to a ratio of the second thickness to the first thickness corresponding to each transverse and / or longitudinal sampling point; Based on the thickness retention rate of each sampling point in the transverse direction and / or the longitudinal direction, an average value and a standard deviation of the thickness retention rate in the transverse direction and / or the longitudinal direction of the membrane electrode frame are determined.

7. The method according to claim 6, characterized in that The step of evaluating the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame comprises: Based on the comparison results of the average thickness retention rate in the horizontal and / or vertical direction with the preset thickness retention rate threshold, and the comparison results of the standard deviation in the horizontal and / or vertical direction with the preset standard deviation threshold, the durability of the membrane electrode frame is evaluated.

8. A membrane electrode frame durability evaluation device, characterized in that: include: An acquisition module performs a durability test on the membrane electrode frame to respectively acquire a first thickness of the membrane electrode frame before the durability test and a second thickness of the membrane electrode frame after the durability test; A determination module, which determines a durable thickness retention rate of the membrane electrode frame based on the first thickness and the second thickness; An evaluation module evaluates the durability of the membrane electrode frame according to the durable thickness retention rate of the membrane electrode frame.

9. An electronic device, characterized in that: The method comprises a memory, a processor, and a program stored in the memory and capable of being run on the processor, wherein the processor implements the method according to any one of claims 1 to 7 when executing the program.

10. A computer-readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 7 is implemented.

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